III. MSC/PATRAN
Contents
1. Direct Text Input Select Superelements o Pelete Select Explict MPCs Apply Cancel OK Defaults Cancel 3 44 The last step is to select the subcases out of the subcases created above that will be used for analysis This is done by clicking on Subcase Select This will display the form shown below We click on Icase_1 under Subcases For Solution Sequence 101 and then press OK This will place lcase_1 under Subcases Selected Thus Icase_1 has been selected for analysis We then press Cancel to conclude this step Subcase Select EE x Subcases For Solution Sequence 101 lcase_1 al ae Select All Unselect All Subcases selected OK cancel After all these have been concluded we press Apply on the main application menu form and MSC PATRAN starts the creation of classwk1 bdf the bulk data file for the job classwk1 At this point the user waits until this process is completed After the creation of classwk1 bdf MSC PATRAN automatically submits the file for analysis to NASTRAN without the user intervention At the conclusion of NASTRAN analysis we will now have in the current directory among the files generated by NASTRAN classwk1 op2 the binary OUTPUT2 format result file and also classwk1 f06 an ascii result file At this point we are set for post processing to see graphically our results III 5 7 Post Processing The post processing procedure begin2. In the following picture the title is given as Solid_Model Solid_Model 522 HI 4 LAB SESSION 2 Plate problem In this lab session try to create the plate shown below The steps used in generating the plate are illustrated You are not limited to using these steps You can obtain the same results using any other combination of steps 1f you are confident of doing so Step 1 Enter MSC PATRAN by typing cae patran2005 at the UNIX prompt Step 2 Create a new database named classwk1 or any other name you prefer by clicking on File New Database of the control panel The following form is displayed It is completed by supplying the new data base name New Database El x Template Database Name afs ions 0du eduy sundxs S8 dep cae msc2004 patran2004 template db Change Template F Modify Preferences Filter fats lions odu edushome r rparadol dk Directories Database List fats lions odu edushome r rparadot r fats lions odu edushome r rparadgl desktop vortex fafs lions odu edushome r rparadgdl desktophost fats lions odu edusfhome r rparadgl dt fafs lions odu edushome r rparaddl 7 emacs d Cae projpect db fats lions odu edushome r rparadgl tmU Sok pb 1bc j cae_manual db d d m New Database Name classwkil Filter cancel 3 23 Step 3 Set the model parameters by completing the model preferences form shown below This form is automatically displayed after a
3. Geometry EE x Message o x Action Edit zi Question from application SGM object curve i Do you wish to delete the original curves i B Method Merge i _ _ Yes No D S O i S O S Curve ID List Merge Parameters Number of Curves to Create fa Merge Tolerance io 007 F Delete Original Curves Curve List Apply 3 28 Step 22 Trim showed 10 Step 23 Create Surface using the 2_curve option This is done by completing the form shown below The form has been completed and applied for surface 1 hence it is ready for surface 2 i e Surface ID List 2 The Starting Curve List for surface 1 is Curve 16 and the Ending Curve List is Curve 3 Geometry of x ACTION Create al Object surface Method curve i surface ID List f2 Option 2Ccurve i Pitaieiarivabign hiedhed af Bard Leudih A dinifern _j Manifold Manivadd durfars J AUTO Execute Starting Curve List curve 1 Ending Curve List Apply Step 24 Similar to surface 1 create surfaces 2 through 7 with Starting Curve List 2 6 12 13 14 15 and Ending Curve List 1 17 8 9 10 11 For example surface 3 is created from curves 6 and 17 3 29 Step 25 Before we continue we want to set the Display Property such that only surface numbers will be displayed the curve and point numbers will be hidden This is done by clicking on the Display button of the
4. the MSC PATRAN user interface consists of a control panel graphics window view port and a command history window The control panel controls the parameters for system tasks such as managing files setting preferences manipulating groups and graphics as well as switching between interactive applications The information displayed in the graphics window includes geometry finite elements applied loads boundary conditions analysis results and user defined annotation The command history window contains a record of all commands executed during a MSC PATRAN session as well as enabling commands to be entered from the keyboard IlI 2 3 Files MSC PATRAN modeling begins with opening a file new or existing using the FILE pick in the upper left corner of the main menu File management options available under the FILE pick include create a new database open or close an existing database access CAD geometry import IGES models or PATRAN Neutral Files record and playback session journal files The MSC PATRAN relational database defaults to a db extension and contains a complete record of user created geometry finite elements load cases load and boundary conditions materials element properties preferences and results MSC PATRAN database creation is memory expensive Each database requires approximately 6MB of disk space Therefore old database should be compressed using the Compact Database option under the FILE pull down menu Th
5. 10 34 47 Fringe Icase_1 Static Subcase Stress Tensor t Z1 VONM Deform lcase_1 Static Subcase Displacements Translational default_Fringe Max 2 47 04 Nd 270 Min 3 10 02 Nd 296 default_Deformation Max 2 10 03 Nd 291 3 48 I 6 LAB SESSION 4 1D Beam Problem using Bar Elements The objective of this lab session is to demonstrate the use of the Element Props radio button for problems involving one dimensional bar or beam elements The example problem is the frame shown below which is made up of 1D straight curves Geoemtry creation boundary conditions and loads assignment load case creation finite element mesh generation material properties assignment submission of job to NASTRAN for analysis and post processing can be handled in a manner similar to the last example Hence enough information will only be provided to guide us through the example Necessary detailed explanations will be given under Element Props III 6 1 Geometry Points 1 to 8 in the above figure are at x y z of O 1 0 1 1 0J 1 1 1 O0 1 1 0 O 0 1 O 0 1 O 1 0 O 1 respectively 2_Point straight curves are generated as shown by connecting points and 2 2 and 3 3 and 4 1 and 5 2 and 6 3 and 7 and 4 and finally 4 and 8 III 6 2 Load BCs All six degrees of freedom are constrained for points 5 through 8 that is Translations and Rotations vectors are both equal to lt 0 0 0 gt Force vectors of lt 0 _120 50
6. Plot Wi lal select Result Cases L Default Static Subcase lcase_1 Static Subcase Fi Fi select Fringe Result A Constraint Forces Translational Displacements Translational stress Tensor Fi SF Quantity Magnitude i select Deformation Result al Constraint Forces Translational Displacements Translational Tes L m Fe _ Animate Apply 3 47 Clicking on 2 1 _ Displacements Transilational under Select Deformation Result will lead to the display of the deformed shape shown below Clicking on 3 1 _ Stress Tensor under Select Fringe Result will lead to a display of the fringe plot of the stress tensor superimposed on the deformed shape as shown below Xx MSC Patran 12 0 044 14 Jan 06 10 33 03 210 03 Fringe lcase_1 Static Subcase Displacements Translational NON LAYERED MAG 1 96 03 Deform lcase_1 Static Subcase Displacements Translational 1 82 N ZN 1 68 03 1 54 03 Y 3 20 10 default_Fringe x Max 2 10 03 Nd 291 Min 0 Nd1 default_Deformation IlI 5 8 Homework For the lug shown on page 4 29 whose geometry you have generated specify the loads and boundary conditions indicated in the figure Also generate a suitable finite element mesh and perform NASTRAN analysis Submit a print out of the deformed shape and the fringe plot of the Von Misses Stresses MSC Patran 12 0 044 14 Jan 06
7. The user then selects Postscript Default under available printers and Postscript under Driver The Page Setup option porvides another form where the either landscape or portrait paper orientation can be selected A third form is obtained by clicking on Options menu This form which is shown below asks for the Format Background Lines amp Text etc The form shown here has been completed for the generation of a postscript file named manual ps for black amp white output Print Control Format Black to White Background White 1 Lines amp Text Black Line weight 0 5 pts Text Scale fa 00 3 Image Size Fit on Page Draw Borders Yes i Print to File Create EPS File Filename icae_man ual ps OK cancel SZ To obtain a color postscript file the Color option is selected for Format the White option for Background and the Actual option for Lines and Text To print the generated postscript file simply type at the UNIX prompt Ipr Pprinter filename where printer is the name of the printer and filename is the postscript file generated Use cae yoda for black and white printout III 3 6 Creating the Geometry Each student should go through this section as part of Lab Session 1 To enter MSC PATRAN just type cae patran2005 at the UNIX prompt Wait until the system displays the control panel window and the command history window see p
8. Yes For All is selected Geometry i x Action Create Object Curve i Method Fillet i Curve ID List fa Fillet Parameters Fillet Radius ET Fillet Tolerance 0 007 JI Trim Original Curves J Auto Execute Curve sPoint 1 List SM Evaluate Geometry curve SL CUurve P ont 2 List SH Evaluate Geometry curve H Apply A new point 19 and a new curve 16 are created The result is shown below O x a2 Step 21 Trim the curve between points 19 and 5 by using Edit under Action Select Trim under method and point under option Select Trim under method and point under option Select pont 19 and curve 4 for Trim Point List and Curve Point List Click on Apply after the form is completed Geometry ai x ACTION Edit al Object Curve i Method Trim cal Option Point i Auto Execute Trim Point List Point 19 Curve Point List Evaluate Geametry curve HE Apply This step involves merging of two curves 5 and 7 This is done by using the form below The new curve formed from the merge is 17 The next two forms contain questions about the merging The answer to the first question Do you wish to create a dupilicate curve is No The answer to the second question Do you wish to delete the original curves is Yes Follow step 21 to trim the curve between points 5 and 7
9. control panel followed by Geometry button This option allows the surfaces to be displayed with the fewest number of parametric lines Next all label buttons in the Entity Types section of the form are deactivated except the surface label button The form is then applied Geometric Attributes ojx Number of Display Lines o Chordal Tolerance fio o01 0 00 _ geometric Shrink J Show Parametric Direction J show Free Faces Point Size Colors and Labels A curve JLabel surface E F Label TSurt aas Solid _ Label r m ee Show All Geometry Labels Hide All Geometry Labels Coordinate Frames Reset Apply Cancel 3 30 Step 26 Finally to complete our plate geometry creation we mirror the figure in the viewport which is half of our geometry This done by completing the form below The mirror plane normal is defined as 0 3 O O 0 O The Surface List is selected to include all existing surfaces i e surfaces through 7 Geometry ol x ACTION Transform Object Surface i Method Mirror surface ID List fas Define Mirror Plane Normal 0 3 O110 0 OF Offset Parameters Offset 10 0 Reverse Surface J Delete Original Surfaces J Auto Execute surface List Surface 1 7 Ap ply Step 27 The created geometry can then be printed by following the example shown on p 4 11 The user is free to supply his her own file name
10. table disappear Hix Action Optimize i Object Nodes i Method Both aj Minimization Criterion ae RMS Wavefront 4 Bandwidth Profile ae Max Wavefront Starting Node ID Bandwidth Optimization Parameters Node Quantity Bandwidth Profile Max Wavefront Avg wavefront RMS wavefront Sorted FEM 232 2422 a9 25 319403 274041 L After C M 25 4356 24 13 002995 13 427084 After G P 5 24 4340 24 12 955224 13 363126 III 5 4 Material Selection In this section we will create the structural material that constitutes our elements We start by clicking on the Materials button on the control panel The form shown below on the left side is displayed We complete the form as shown Our material is isotropic and the properties will be input manually We supply the material name under Material Name After this we click on the Input Properties button and we have the form shown on the right side In this second form we select the constitutive model which in this case is Linear Elastic We also fill out the property sheet by supplying the shown values for Elastic Modulus Poisson Ratio and Density We then press Apply to make the information active We then press Cancel to complete the process We now see in the left side form under Existing Materials the name Steel 3 40 Materials i x Input Options oj x Action create C
11. under Available Load Cases and then press apply This will place lcase_1 under Available Subcases To make requests for the variables we want in our output for this subcase we click on Output Requests and we have the form on the right below In this form we click on Displacements Element Stresses and Constraint Forces one after the other under Select Result Type Pressing OK will place these three output requests under Output Requests as indicated The indicated output requests will be printed both in the f 06 and op2 files We then press Cancel to conclude this selection We then press Apply in the form on the left to conclude Output Requests and Cancel to conclude Subcase Create Subcases BEE Output Requests ox Solution Sequence 101 SUBCASE NAME Icase_1 Action create SOLUTION SEQUENCE 101 Form Type i Available Subcases YP Basic Select Result Type Element Stresses Constraint Forces Multi Point Constraint Forces Element Forces Applied Loads Element Strain Energies Subcase Name Nease_4 Subcase Description ee gt Element Strains This is a default subcasej A f J a Available Load Cases Output Requests Default A TOEA PAENT OORE AENEA AN STRESS SORT1 REAL YONMISES BILIN All FEM PAR Fi SPCFORCES SORT1 READ All FEM A en P Subcase Options 7 Subcase Parameters ml j Output Requests
12. under Position at point C which implies that the stress at Point C defined in Section 6 5 will be reported Results el x ACTION Create Object Quick Plot Select Fringe Result Bar Stresses Axial Bar Stresses Banding Bar Stresses Maximum Combined Bar Stresses Minimum Combined Constraint Forces Translational f es Position 4t Point Quantity von Mises m select Deformation Result Constraint Forces Translational gt Displacements Translational ef _ Animate Apply 3 52 The fringe plot of the Von Mises stresses is superimposed on the plot of the deformed shape as shown below MSC Patran 12 0 044 16 Jan 06 14 13 30 Fringe Default Static Subcase Bar Stresses Bending At Point C VOMI Deform Default Static Subcase Displacements Tra me default_ Fringe Max 2 83 00 Nd 2 Min 4 11 01 Nd4 default Deformation Max 4 41 0 7 Nd III 6 8 Homework Construct the model baja frame given below using MSC PATRAN The coordinates of the points are given Connect these points with bar elements The frame is subjected to the following forces 100 lbf in the negative z direction at point 8 50 lbf in the positive x direction at point 17 120 lbf in the negative z direction at point 17 130 in the negative z direction at each of points and 2 and 150 lbf in the negative z direction at each of points 24 and 26 Points 7 10 23 and 25 are the points of connection fo
13. 4 4 amp 4 5 for lt SC PATRAN The first step is to create a new database file This is done by clicking the left mouse button on FILE in the top menu bar of the control panel This will show a pull down menu from which CREATE A NEW DATABASE is selected The result is the form shown below New Database el x Template Database Name ats lions odu edu sun4ds_S dep cae msc2004 patran2004 template db Change Template Modify Preferences Filter fats lions odu edufhome sr rparadod dk Directories Database List afs lions odu edufhome rfrparadot A db fats lions odu edushome r rparadot 4 db fafs lions odu edufhome sr rparadot desktop vortex 3d beam db fats lions odu edufhomeysrfrparadot desktophost Sd beam2 db fafs lions odu edushomesr rparadot dt Mbajazb db fafs lions odu edushomesr rparadot emacs d bracket db fafs lions odu edushome r rparadot fmu 20k pb 1bc cae pro db Fj d d I New Database Name Filter Cancel Note that one should click on Modify Preference to check whether MSC NASTRAN is selected as the analysis before proceeding In the form shown above a new data base name 3 13 manual has been entered The user can supply his her own name The OK button is selected With the left mouse to create a new database named name db in this example manual db After the database has been created the following form for model preferences is aut
14. Auto Execute Starting Point List Point 1 Middle Point List Point 3 Ending Point List Apply Don t click on Auto Execute Instead click on Apply It gives user a little room to correct typo errors The result of applying the above form is the arc curve 2 shown in the figure below 3 18 The next stage is to create a surface A surface can be created from 2 3 4 or N curves where N is a number to be supplied by the user An example is given here of how the a surface can be created from two curves First the 3_point arc should be deleted by selecting delete under action and then clicking on the 3_point arc in the viewport Next the following form is completed for creating a second curve by translating the first 2_ point curve Action Transform Object Curve Method Translate i Curve ID List Type of Transformation Refer Coordinate Frame Coord d Translation Vector lt 0 50 gt Translation Parameters Repeat Count a J Delete Original Curves J Auto Execute Curve List Curve d Apply In the above form lt 0 5 0 gt is entered for the Translation Vector and Curve 1 is entered for the Curve List The result of applying this form is shown below 3 19 After the two curves have been created the form below is completed for the creation of a surface Geometry BEE Action Cr
15. HI MSC PATRAN HI 1 OBJECTIVE The objective of this manual is to introduce the users to the finite element modeling capability of MSC PATRAN and to give hands on end_to_end guided tour of the software The manual shows users how to start MSC PATRAN create the geometry model create the finite element mesh define the element and material properties create load case and the loads and boundary conditions prepare data for the analysis and finally postprocess the results This manual does not replace the MSC PATRAN User s manual which can currently be browsed through in the online help menu but provides sufficient information to start with II 2 INTRODUCTION The finite element method is a proven technique for using computers to model a wide variety of engineering problems Its application in the real world was hindered however by the amount of time spent both in producing the raw data to feed a Finite Element Analysis FEA and in interpreting the usually large volumes of results from the analysis MSC PATRAN is a software developed to provide a systematic approach towards making FEA modeling fast and accurate It uses a simple step by step approach that helps to create analyze and interpret a mathematically realistic model of the structure This approach is built around geometric modeling interactive computer graphics and current finite element theory HI 2 1 Engineering Functionality The capabilities of MSC PATRAN include 1 A ful
16. Homework Lug Problem Now as your homework generate the geometry of the LUG shown below It is not necessary for the patch numbers to match those given in the figure 3 31 HI 5 LAB SESSION 3 Analysis of the Plate problem In this lab session we will analyze the plate of lab session 2 In particular we will learn how to use the following radio buttons 1 Load BCs To assign boundary conditions and loads 2 Load Cases To create and load cases 3 Finite Element To generate finite element mesh 4 Materials To assign material properties 5 Element Props To assign element properties 6 Analysis Interfaces with NASTRAN via PATNAS PATran to NAStran to generate bulk data file and submit the file to NASTRAN for analysis autoamtically and via NASPAT NAStran to PATran to read in and translate the analysis OQUTPUT2 format results 7 Results To graphically view analysis results To accomplish the above we will follow the steps shown below Load the geometry of the plate generated in lab session 2 This is done by opening the MSC PATRAN database saved in the lab session 2 by clicking on File Opening an existing database The form shown below is completed by supplying the Existing Database Name indicating the full path to the directory in which the database file is located If P3 is entered from the directory that contains the existing database this database is automatically displayed in Database List The databa
17. Rotations R1 RZ R3 gt oet Default Type static Existing Sets Fi EI Spatial Fields B F FEM Dependent Data New Set Name Analysis Coordinate Frame fone OK Reset Input Data select Application Region Air To complete the boundary condition specification we have to Input Data and Select Application Region To input data the Input Data button is clicked on and the form above on the right is displayed This form is completed as indicated The Translations vector is lt T1 T2 T3 gt lt 0 0 O gt and the Rotations vector is lt R1 R2 R3 gt lt 0 0 0 gt This implies that the six degrees of freedom are constrained 3 33 To select application region the Select Application Region button is clicked on This will bring a display of the form shown below Since we are assigning the boundary conditions before the finite element mesh is generated we select Geometry under Geometry Filter Then the cursor is moved to Select Geometry Entities At this point since we want to apply the boundary condition to the left edge of the plate we first click on the edge icon in the Visible Entities display see page 4 14 The select menu will then state Select a Curve At this point we cursor select the left edge of the plate by using a rectangular cursor selection After this is done Surface 2 1 9 4 that is edge 1 of surface 2 a
18. SES _J Convert CBARS to CBEAMSs Subcase Select _j Use erative Solver aaaaalalaaaasassusuauululuasususaaiaiasassssssssssssstslu External SupercElement Methi Mone Apply wWumbering Options Bulk Data Include File OEK Defaults Cancel MMIII Card Format either i When the Translation Parameters button is clicked on we have the form displayed on the right above All default values in this form are accepted Notice that we have OP2 and Print under Data Output This ensures that results will be printed both in the NASTRAN OUTPUT2 format and the f06 ascii format Furthermore the OUTPUT2 request is going to be done via the P3 built_in automatically Clicking on the Solution Type button will give the form shown below The form is accepted as defaulted by pressing OR 3 43 Solution Type Je x HS Aas ta Solution Type Solution Type NONLINEAR STATIC NORMAL MOLES BUCELIN G COMPLEX EIGENVALUE FREQUENCY RESPONSE TRANSIENT RESPONSE NONLINEAR TRANSIENT IMPLICIT SONLIN EAR DO AM Solution wr wr Select SSET LOSET Solution Parameters Solution Sequence 101 OK cancel The next step is to create subcases for the analysis This is done by clicking on Subcase Create which then displays the form on the left below To make lcase_1 1 e the load case created earlier a possible subcase we click on Icase_1
19. control panel The following form is then displayed Initially under Existing Load Cases we have the Default load case listed This load case is always present in any analysis irrespective of how many more load cases are created by the user Then we specify the new Load Case Name as Icase_1 We make the new load case current The user is free to give some description for the new load case under Description This is optional The next step is to go to the list of Assigned Load BCs Sets and then select the combinations of loads and boundary conditions that will constitute the load case being created For our example we select all the loads and boundary conditions in this list to constitute our load case This means that our load case is made up of Displ_fixed_be Force_10000_ibf and Force_1000_ibf After the form is completed we press on Apply to conclude the creation of the load case By now we should see under Existing Load Cases our newly created load case 1 e lcase_1 3 36 Load Cases Action Create Existing Load Cases Default A Filter Load Case Name icase F Make Current Type static ss static ss Description lt __Assign Prioritize Loads ecs __Assign Prioritize Loads ecs Load Case Scale Factor Apply IlI 5 3 Mesh Generation The next step is to create the finite element mesh for our plate This step is divided into two the first is to create mesh seeds f
20. ds curve 11 for example is created by joining point 13 and point 12 Step 18 Create curve 12 by using the 2D ArcAngles option under Method A form to be completed for this is shown below This form has been completed and applied for curve 12 hence 13 is displayed in the Curve ID List For this curve the following information was supplied Radius 1 0 Start Angle 180 End Angle 225 Center Point List Point 10 Geometry iol x ACtiOon Create m Object Curre Method 2D 4Arcangles i Curve lD List AFC Parameters Radius w E Start Angle 180 0 End Angle 225 0 J Project to Plane Construction Plane List icoora 0 3 Auto Execute Center Point List Apply 3 26 Step 19 Similar to curve 12 create curves 13 through 15 using the same radius and center point list as curve 12 but with start angles 225 270 315 and end angles 270 315 360 degrees Step 20 Create curve 16 by using the Fillet option under Method The region of fillet is shown in the plate figure The form displayed to be completed is shown below This form has been completed for the fillet curve The following information was supplied Fillet Radius 0 5 Curve Point 1 List click on curve 5 then point 5 Curve Point 2 List click on curve 4 then point 5 After the form is completed P3 asks if the original curves should be trimmed A window is displayed for this see below The option Yes or
21. e record of commands shown in the command history window during a MSC PATRAN modeling exercise are stored in editable files that can later be run through MSC PATRAN to perform parametric or sensitivity analyses Two files are created by MSC PATRAN to store these commands A session file ses extension which contains the record of all PCL commands for each interactive session A journal file jou extension which contains a record of all PCL commands for a particular PATRAN database SZ I 2 4 Analysis Preferences MSC PATRAN provides for the user unique analysis preferences 1 e a user can readily switch between commercial analysis solvers and proprietary in house codes Thus the user is not faced with having to learn the command and syntax of each particular analysis solver Upon setting the new preference MSC PATRAN automatically updates common element properties material properties loads boundary conditions and analysis code forms to those of the newly selected solver Note that in this manual our analysis solver will be MSC NASTRAN III 2 5 Results Visualization MSC PATRAN postprocessing is state of the art in its ability to display sort combine scale and query in a general way a single results database After execution analysis results are loaded directly into the MSC PATRAN relational database and can be sorted by time step frequency temperature or spatial location MSC PATRAN postprocessing enables the engineer to filt
22. eate Object surface Method Curve surface ID List f2 Option 2Curve i Pirang dP ghaed Fab baa Ngee dee oe we 2 Berd Last is tindfarins J Manifold manifold Gape dat a _ auto Execute Starting Curve List curve d Ending Curve List Apply 3 20 Applying the above form we have the result shown below The next stage is to create a solid Again there are several ways of creating a solid In this example we are using the 2_ surface option Hence we need to create another surface This is done by translating the previous surface 5 units of distance in the z_direction i e Translation Vector lt Q 0 5 gt The form completed for surface translation is similar to that of curve translation with Surface as the Object After surface translation we have the result below 32l The rectangular solid is created by completing the form shown below Geometry ACTION Create al Object Solid wi Method Surface Solid ID List fa Option 2Surface i Pua a Prey abian hafni ar ihard Longi iipifarm F Auto Align Orientations Auto Execute Starting Surface List surface Ending Surface List surface A Ap ply Applying the above form we have the result shown below To write a note or legend on the figure click on Display then Title and follow the instructions to fill out the proper information Click on Apply
23. eate Zi Action Create mj ACTION Modify Object MeshSeed Object Mesh i Object Node Wi Type i ne Uniform Type surface a Method Move Display Existing Seeds Output ID List _ Suto Execute Element Edge Length Data Node Node List Node 75 Elem Shape Quad i New Node Locations gt Number of Elements Mesher IsoMesh Node Element Length Db Topology Quad4 i 4 Iy Number id IsoMesh Parameters a Node Coordinate Frames Element E i a S Auto Execute surface List Curve List surface 1 14 Global Edge Length curve 1 Apply _J Automatic Calculation Value fio Frp REPSI oo Bigg oe select Existing Prop Create New Property Apply Before concluding the process of mesh generation some modifications are made to the nodes at the interface of surfaces 8 and 9 and also the interface of surfaces 1 and 2 The modification involves making at the interface the nodes for surface 9 coincident with the corresponding nodes for surface 8 and the nodes for surface 2 coincident with the corresponding nodes for surface This is achieved by moving the nodes to their new positions An example is shown in the form above on the right where Node 75 is moved to coincide with Node 4 3 38 After all the modifications are completed the plate with the generated element mesh looks as Shown below Note the skewness
24. er engineering results by material element type and property node and element IDs thresholds of results etc simultaneously Display types include but are not limited to deformed fringe vector tensor and engineering X_Y plots Shear and bending moment diagrams are available for beam results and a sophisticated text report writer is available to print out all results in a user defined sorting sequence and format The insight application within MSC PATRAN condenses mountains of raw numerical data into graphical tools and displays for complete accurate interpretation of finite element analysis results II 2 6 On Line Help Documentation The entire manual of MSC PATRAN can be browsed through by clicking the left mouse button on the HELP button of the Top Menu Bar of the Control Panel All interactive features functions and applications in MSC PATRAN can be obtained from the completely topical and context sensitive help on line Hypertext links throughout the on line system allow for instant retrieval of complex information The MSC PATRAN on line help system eliminates the need for printed documentation because the MSC PATRAN printed documentation is identical to on line help files HI 3 LAB SESSION 1 II 3 1 Things to know before you start How to start MSC PATRAN After you are in the X Window environment just type cae patran2005 at the UNIX prompt Hardcopy Printout You can get a black and white printout through the printer cae
25. gt and lt 30 40 0 gt act at points and 3 respectively For both points the moment vector is lt 0 0 0 gt A load case with any name the user wants is created from the specified boundary conditions and the imposed point forces 3 49 III 6 3 Mesh Generation First mesh seeds are created one mesh seed per curve Thus each curve is represented by one element After this a mesh is created to connect the nodes created by the mesh seed operation During mesh creation in the Application Menu form Curve is chosen under Type and Bar2 is chosen under Element Topology Under Curve List the entire geometry is chosen 1 e Curves through 8 Equivalencing and Optimization steps are carried out as usual III 6 4 Material Selection An isotropic material with Elastic Modulus of 3 E7 and a Poission Ratio of 33 is specified in the Input Properties form You can specify any name for the material under Material Name III 6 5 Element Properties Proceed with element properties specification as in the previous example However in the Element Props Application Menu form Object should be 1D and Type should be Beam Under Options select General Section In this example even though the section properties of the bar elements are the same the elements belong to three different groups each group having its own orientation vector Therefore three property sets will be assigned each
26. ical form on the right side of the screen These forms are called the Application forms There are also smaller forms that are sometimes displayed which are associated with the specific Application form and they are called Subordinate forms af III 3 3 Using the Mouse MSC PATRAN uses a three button mouse Depending on what you are doing each of the three buttons will accomplish a specific task in MSC PATRAN The following is a summary of what you will need to know to complete the guided tour Using Pull Down or Option Menus To use a pull down or option menu with the left mouse button click on menu item While holding down the mouse button drag the mouse to the appropriate selection and then release the mouse button Selecting From a Listbox A Listbox has a title at the top and a list of contents To select an item use the left mouse button and highlight the item To deselect the item use the left mouse button and highlight the item To deselect the item use the left mouse button and click on the highlighted item Overview of the Three Buttons The left mouse button is used to select model entities To select more than one entity hold down the Shift key while selecting the entities with the left mouse button The right mouse button is used to deselect an entity that was selected in error To deselect more than one entity hold down the Shift key while selecting the entities with the right mouse button The center mouse butto
27. iew Transformations You can rotate or translate the view incrementally by selection from the Menu Bar A subordinate Transformations form will appear with a matrix of buttons By pressing any one of the buttons you can translate zoom or rotate your model incrementally For example by pressing a button MSC PATRAN will rotate your model about the screen or model s Y axis To perform a Fit View where MSC PATRAN will resize the view of the model to fit within the viewport you would simply press the assigned button More view transformation buttons are shown on the next page 3 10 Show the entire model with hidden lines Show the entire model without hidden lines Show the shaded solid view of the model Show the end_view in the Y_X plane Show the end_view in the Z_X plane Show the end_view in the Z_Y plane Show the isometric view Show all the labels set labels on Do not show all the labels set labels off HI 3 5 How to print the contents of the current viewport To print a hardcopy output of the contents of a viewport the user should click the left mouse button on the File option of the top menu bar of the control panel and select Print in the pulled_down menu The following application form is shown on the screen Current iewport Available Printers Postscript Default PatranHard Default COM Default HPGL Default HPGL2 Default Page Setup Options Apply Cancel
28. l set of tools for the creation of parameterized model geometry In addition MSC PATRAN has Single Geometric Model SGM capability SGM accesses geometry data topology and evaluators from the CAD Computer Aided Design Drafting system without transformation and establishes and maintains associativity with the corresponding MSC PATRAN finite element entities throughout the entire design and analysis process 11 Finite modeling tools for analysis model creation and verification including mapped meshing automatic surface meshing and automatic tetrahedral solid modeling ii A complete set of functional loads boundary conditions and material element properties assignment capabilities including the capability to assign these directly to the geometry or the finite element model In application this means that the finite element mesh can be deleted and the geometry remeshed without having to reapply the functional assignments All functional assignments can be collected into load cases and named modified or deleted at the user s discretion iv PATRAN Command Language PCL for the customization of MSC PATRAN the performance of variance and design sensitivity studies and automation of routine repetitive tasks 3 1 IHI 2 2 Graphical User Interface The MSC PATRAN user interface is form driven and truly intuitive minimizing the time required to learn the system At startup after creating a new database or opening an existing one
29. n is used to change the view by rotating translating or zooming Keep the button pressed down and drag the mouse to move the model Cursor Selecting Shortcuts To cursor select model entities with a rectangular box hold down the left mouse button at the upper left hand point and drag the cursor to the lower right hand point Then release the mouse button To cursor select entities with a polygon shape box hold down the Control Key Ctrl and use the left mouse button and start picking at arbitrary points A B C D to define a closed polygon box 3 8 III 3 4 Modifying the View There are several ways to alter the view of your model and below are some of the more common ways Using the Middle Mouse Button As mentioned earlier you can rotate translate or zoom in on your model by dragging the mouse while holding down the middle mouse button To switch the mouse function to rotate translate or zoom enter View Mouse Settings View Select Corners You can zoom in on a particular part of your model and at the same time define a new viewing center by selecting from the Menu Bar 3 9 MSC PATRAN will turn the cursor into a cross hatch Define a new viewport by dragging the cursor diagonally and defining a rectangular box Drag the cursor along a diagonal direction to select a portion of the model you want to view up close Select View Fit View if you want to return the view back to the entire model V
30. nd edge 4 of surface 9 is shown in the Select Geometry Entities window We then click on Add and Surface 2 1 9 4 is now shown in the Application Region window After this is completed click on OK to conclude this part Geometry Filter gt geometry r FEM Application Region select Geometry Entities 1 Remove Application Region Surface 2 1 3 4 fi 3 34 Then press Apply on the Load BCs Application Menu form to conclude the whole step At this point you should have the figure shown below Notice the cones at the left edge of the plate at the display lines point location These cones represent the three fixed translational and three fixed rotational boundary conditions Notice that this boundary condition is applicable to any future finite element mesh generated for the plate that is all finite element nodes on the left edge of the plate will have all six degrees of freedom constrained even though the nodes are yet to be created II 5 2 Applied Loads The next step is to assign loads to the plate In this example we will have two point nodal loads one in the negative Y_direction and the other in the positive X_direction the lines of action of both forces passing through the center of the circular hole in the plate To achieve this we complete the same set of forms as for the boundary conditions for each of the point loads one after the other but with the following modifications The Objec
31. new database has been created or an existing one opened Model Preference for classwk1 db Tolerance Based on Model Default Approximate Maximum Model Dimension Analysis Code MSC Nastran l Analysis Type Structural mj OK Reset Step 4 Start geoemtry creation by clicking on the Geometry button of the radio panel The following form is displayed The form is completed for point 1 at x y z 0 0 0 as shown Geometry LE x Action Create al Object Point i Method XYZ ai Point ID List i Refer Coordinate Frame coord G _ Auto Execute Point Coordinates List 3 24 Step 5 Similar to point 1 create points 2 and 3 at x y z of 5 0 0 and 0 3 O respectively Step 6 Create point 4 by translation method This is done by completing the form shown below The form has been completed for creation of point 4 by translating point 3 through a vector of lt 5 0 0 gt The Point ID List is shown to be 5 because the Apply button has been clicked on and point 4 has been created BIE ACTION Transform i Object Point i Method Translate Point ID List Type of Transformation Refer Coordinate Frame Coord do Translation Vector lt 9 0 0 gt Translation Parameters Repeat Count E J Delete Original Points Auto Execute Point List Point 2 Ap ply Step 7 Similar to point 4 create point 5 by translating point 2 through l
32. o be Imported Selected Results File Division Numerical J Rotational Nodal Results J stress Strain invariants Principal Directions _ P element P order Field Element Results Positions OK Defaults Cancel 3 46 Files baseframe_stiffener_062005 0p2 baseframe_stiffeners op2 bridge _061505 0p2 connector op for_csa_rajesh_free_maglev op2 free_vehicle_rajesh_forcsa op2 Fj z p fafs lions odu edufhomesr rparadot classwk1 ops Filter cancel When the translation process is completed we are ready to view our results This is achieved by clicking on the Results radio button on the control panel We then have the form shown below on the left in which we have chosen Basic as the Form Type The result for our load case 1 e load_case_1l is automatically placed under Select Result Cases We then click on our load case name as shown on the right below and the results that can be displayed by fringe plotting are indicated under Select Fringe Result while those that can be displayed line plotting are indicated under Select Deformation Result Results el x ACTION Create Object Quick Plot i E E Default Static Subcase lcase_1 Static Subcase Select Result Cases L T S select Fringe Result a li 0 Select Deformation Result a FP co a _J AHR Se Apply Results joj x ACTION Create Object Quick
33. oO M Auto Execute Foint Coordinates List To o al Apply The above form has been completed for the creation of a point at x y z 0 0 0 It should be mentioned here that there are several options under Action Object and Method The choice of combination of options for these three is based on the result desired Further examples will be seen in the course of this manual After a geometrical entity has been created the figure shown below Visible Entities is seen at the bottom of the screen This figure highlights geometrical entities that can be selected by clicking of the left mouse button on the desired entity The second point is at 5 0 0 3 15 The figure below shows the view port after two points have been created The next stage is to create a curve The form below has been completed for the creation of a 2_point curve using the two points created earlier Geometry Action Create al Object curve Method Point Curve ID List fz Option 2 Point _ Auto Execute Starting Point List Point 1 Ending Point List Apply 3 16 The result of applying the above form is shown below Next we illustrate the creation of a 3_point arc The third point is at 2 5 2 5 OJ For this purpose the completed form is shown below Geometry al x Action Create j Object curve Method AFCSPOINt Wi Curve ID List _ Create Center Point J
34. of the elements at the interfaces mentioned above in surfaces 2 and 9 where some nodes have been moved to coincide with the nodes in surfaces and 8 Modes along the Interface have been moved to ensure the connectivity between adjacent surfaces The process of mesh generation is completed by doing the Equivalencing and Optimization Equivalencing forces nodes that are within some specified tolerance limit to coincide The tolerance used here 1s 0 007 This means that any two or more nodes within 0 007 unit of distance from one another will be forced to coincide at the position of the node with the lowest node identification number within the group Examples of nodes affected by Equivalencing are the nodes along the symmetry line and along lines common to adjacent surfaces The form below is completed for Equivalence Finite Elements Jof x Action Equivalence Object All Method Tolerance Cube Option Retain lower node id i Nodes to be excluded Equivalencing Tolerance 0 007 Ap ply Optimization is done to minimize the memory requirement of the global stiffness matrix by rearranging the elements of the matrix such that the storage bandwidth is reduced The form below has been completed to Optimize The table below the form is a result of the optimization when the Apply button is pressed Notice the drastic reduction in the bandwidth after 3 39 optimization Pressing OK will make the
35. omatically displayed New Model Preference al x Model Preference for Cae_manuval db Tolerance gt Based on Model ae Default Approximate Maximum Model Dimension fa 0 0 Analysis Code MSC Nastran l Analysis Type Structural OK Reset This form is completed for tolerance limit approximate maximum dimension of the model to be created analysis code of choice and analysis type The form shown here has been completed for structural analysis with MSC NASTRAN as the analysis code As said earlier see p 2 our analysis code will be MSC NASTRAN After the form is completed OK button is selected The next step is to start the creation of a geometrical model In this lab session the reader is taken through creation of basic geometrical entities such as point curve 1_D surface 2_D and solid 3_D The creation of all geometrical entities is initiated by clicking the left mouse button on the GEOMETRY radio button of the control panel see p 4 4 A typical form that needs to be completed is shown below The left mouse button is used to move through the form Note that in MSC PATRAN the input format of the coordinate of a point x y z is given by x y z which is different from that of a vector given by lt x y z gt 3 14 S lt Geometry _ lol x Action Create Pr Object Point i Method EV ai Point ID List a Refer Coordinate Frame coord
36. onstitutive Model Linear Elastic Object Isotropic a Space were pee Method p AA tel a Elastic Modulus 1 809 Poisson Ratio 0 3 Existing Materials Shear Modulus Density 0 0005 Thermal Expan Coeff Structural Damping Coeff Reference Temperature 5 aaaaaaaaaasasasasassssasssssssssasIsIs I z Temperature Dep Model Variable Fields Filter Material Name zd steel Current Constitutive Models k i La l A Description i fj Date 14 4an 06 094638 y DE Clear Cancel HI 5 5 Element Properties This section deals with specification of properties of our elements This is started by clicking on the Element Props button on the control panel This gives a display of the form shown on the left below This form is completed as indicated The elements are 2_ dimensional in geometry Hence the element type chosen is shell The name plate_shell is given to the property set being created Under Option s the material is chosen to be Homogeneous The next step is to input the element properties This is done by clicking the left mouse button on Input Properties The form shown on the right below is then displayed The form is completed as shown The material name is steel where steel is the material created in step 5 Notice that m precedes the material name This indicates that the elements whose properties are being created are made of material
37. or the curves bounding our geometry Mesh seeds allow us to define exactly how many elements we want on a selected curve or edge of a surface or solid The number of mesh seeds on a curve is equal to the number of elements on that curve An example is given here of how to create 10 mesh seeds on curve of our geometry The radio button Elements is clicked on and the form below on the left is displayed The form is completed as indicated Mesh seeds are created for other curves one after the other such that surfaces 2 and 9 have 5x10 elements each surfaces 1 and 8 have 3x4 elements each surfaces 3 to 7 and 10 to 14 have 4x4 elements each After the mesh seeds have been created the next thing 1s to create mesh for our geometry This is achieved by selecting mesh as the object in the form shown in the middle below The type of element is chosen as surface since we are dealing with a 2_D problem The element topology selected is Quad4 1 e quadrilateral elements with four nodes We select Isomesh as our Mesher All these selections are then applied to all the surfaces 1 to 14 as indicated in the Surface List To select all surfaces we can use the window cursor after we have clicked on Surface icon in the Visible Entities display After the apply button is pressed the entire geometry is subdivided into Quad4 elements 3 37 Finite Elements lof x Finite Elements Jof x Finite Elements ACTION Cr
38. p Pinned DOFs Node 1 Not applicable skip Pinned DOFs Node 2 Area 8 0 Note This is a real scalar Inertia 1 1 10 667 Note See p 2 16 of the manual Inertia 2 2 2 667 Inertia 2 1 Not applicable skip Torsional Constant 13 334 Note This is J See p 2 17 of the manual Shear Stiff Y 0 8333 Note See p 2 17 of the manual Shear Stiff Z 0 8333 Nonstructural Mass Not applicable skip Y of Point C 2 Note See p 2 17 of the manual Z of Point C 1 Y of Point D 2 Z of Point D _ 1 Y of Point E _2 Z of Point E _ 1 Y of Point F _2 Z of Point F 1 Station Distances Not applicable skip For the curves parallel to the y axis the vector of Bar Orientation is 1 1 0 while for the curves parallel to the z axis the vector is 0 1 1 Every other information is the same as for the curves parallel to the x axis I 6 6 NASTRAN Analysis Submit your job for NASTRAN analysis following the steps in II 5 6 of the plate problem Be sure to confirm the load cases and boundary conditions before submitting job for analysis III 6 7 Post Processing Perform the post processing of your NASTRAN op2 result following the steps in Section NI 5 7 of the plate problem In the Result Menu Form shown below select Von Mises stress quantity to be reported as the option under Result Quantity and select 6_At Center the position where stress quantity will be reported
39. r the wheels Constrain these points in the x y z directions The direction is left free because of the wheels Use aluminum for the frame Perform NASTRAN analysis to compute the deformation and the Von Mises stresses in the frame Ia
40. s by translating the binary NASTRAN output2 op2 file using MSC PATRAN This is done by clicking on the Analysis radio button When the required form is displayed shown below the option Read Output2 is chosen under Action Both is chosen as Object and Translate is chosen as Method 3 45 Analysis fel x Action Access Results i Object Read Output i Method Both p Code mMsc Nastran Type Available jobs e job Name ic lasswkt job Description MSc Mastran job created on 14 Jan 06 at 1016 34 select Results File Translation Parameters Apply Clicking on Translation Parameters will bring the form shown on the left below All settings in this form are accepted as default Clicking on Select Results Files will bring the form shown on the right below The user then supplies the op2 file in Selected Results File This can be done by clicking on the required op2 file under Available Files In this example we have classwk1 op2 under Available Files We then press OK to accept our selection and Cancel to conclude this step Translation Parameters ol x z Select File Efe x Ms c Nastran Both Filter Translation Parameters fafs lions odu edufhomesrfrparadotl opa Tolerances Directories rae desktop vortex Wesktophost rdt emacs fmUZOK pb abc MS c Nastran Version 2004 al L j Additional Results t
41. se can then be selected by clicking on its name in the list Open Database o x J Enable NFS Access Filter fats lions odu edufhomesr rparadot db Directories Database List afs lions odu edufhome rfrparadot Cae proj db fafs lions odu edufhome r rparadot cae projz db fats lions odu edushome sr rparadot desktop vortex Cae project db fats lions odu edushome r rparadotl desktophost cae_manual db fats lions odu edu home sr rparadot dt fats lions odu edushomeysrerparadot emacs d COnnmector db fats lions odu edushome sr rparadot fmusok pb 1bc copy db a d l Existing Database Name fafs lions odu edu home r rparadot classwk1 di Filter cancel 3 2 III 5 1 Boundary Conditions The next step is to assign boundary conditions The desired boundary conditions is to fix the left edge of the plate that is to constrain all six degrees of freedom for the left edge To achieve this the Load BCs radio button is clicked on This will bring a display of the form shown below on the left This form is completed as indicated The New Set Name for the boundary condition is fixed The new set name is just for the user to identify the data it is not used in NASTRAN input file Load Boundary Cond Jof x Input Data Jof x ACTION Create i Load EC Set Scale Factor Object Displacement i fa Type Nodal j Translations lt T1 T2 T3 gt A lt 0 0 0 gt Current Load Case
42. set for each orientation vector The first orientation vector is for the elements in the two curves parallel to the x_axis the second is for the elements in the two curves parallel to the z_axis and the third is for the elements in the four curves parallel to the y_axis The user is free to supply Property Set Name of choice for each of these sets For the first property set Input Properties is clicked on and the appropriate form is displayed A portion of this form is shown below Input Properties of x General Section Beam CBAR Property Name value value Type Section Name ffa Properties Material Name k Mat Prop Name Bar Orientation Hi vector Offset Node 1 F Vector Offset Node 2 F Pinned DOFs Node 1 F Pinned DOFs Node 2 a String ai l Create Sections Beam Library J ASS8 Bgam Socties OK clear Cancel 3 50 The information required to be supplied in the above form are listed below Where a particular information is applicable to our example the required value real scalar or vector is given in front of the information The values given are for the first property set 1 e for curves parallel to the x axis Material Name m steel Note Material name steel is used for illustrative purpose Bar Orientation 1 1 0 Note This is the orientation vector V See p 2 25 of the manual Offset Node 1 Not applicable skip Offset Node 2 Not applicable ski
43. steel The element thickness is specified to be 0 125 For the problem we want to solve the information supplied so far is sufficient Thus the element properties creation is concluded by pressing OK on this form and then Apply in the left form 3 41 Select Members box in Application Region Note that you can not type in the member numbers directly into Application Region box One can either type in the members selected e g Node 1 10 Surface 1 14 etc or use the mouse to select the members by boxing out the members of concerns Next click on Add button The ID numbers of the members selected will appear in the Application Region box and then Apply in the left form Element Properties el x Input Properties lolx Stan Homogeneous Plate CQUAD4 ee LT create Property Name value value Type Object 20 i a Material Name Im steel Mat Prop Name RX Type Shell ll r 3 r CID m Material Orientation l Prop Sets By i A Thickness 0 128 Real Scalar Nonstructural Mass f Real Scalar Fil i et Plate Offset fF Real Scalar Filter F Fiber Dist 1 Real Scalar Property Set Name fF lat hel A E Fiber Dist 2 f Real Scalar Options Homogeneous E r Standard Formulation i pat properties m Application Region Select Members Add Remove OK clear Cancel Application Region Apply IHI 5 6 NASTRAN Analysis The nex
44. t is Force rather than Displacement For the first point load the New Set Name of 1000_pound_down can be used and for the second point load 10000_pound_right can be used These names are just for the user s benefit they are not used in NASTRAN s input file In the Input Data form the following force vectors are provided lt F1 F2 F3 gt lt 0 _1000 O gt for the first point load and lt F1 F2 F3 gt lt 10000 0 0 gt for the second point load For both loads the moment vector is lt M1 M2 M3 gt lt 0 0 0 gt since no external moment is applied In the Select Application Region form when the cursor is in the Select Geometry Entities window the Point icon is selected instead of the Curve icon For the first load cursor select the point at the top of the line dividing surfaces 12 and 13 For the second load cursor select the point at the middle of the right edge of the plate After Apply is pressed for each of the loads in the Application Menu form the figure below is the result Notice the arrows drawn at the selected points signifying the 1000_pound force in the negative Y_direction and 10000_pound force in the positive X_direction Each arrow is displayed as soon as the load corresponding to it is created 3 35 Now a load case will be created that combines the two point loads and also the specified boundary conditions This is done by clicking on the Load Cases button of the
45. t 0 1 0 gt Step 8 Similar to point 4 create point 6 by translating point 4 through lt 0 5 0 0 gt Step 9 Similar to point 4 create point 7 by translating point 5 through lt 0 5 0 0 gt Step 10 Similar to point 4 create point 8 by translating point 7 through lt 2 0 O gt Step 11 Similar to point 4 create point 9 by translating point 6 through lt 2 0 0 gt Step 12 Similar to point 4 create point 10 by translating point 9 through lt 2 5 0 0 gt Step 13 Similar to point 4 create point 11 by translating point 8 through lt 2 5 0 0 gt Step 14 Similar to point 4 create point 12 by translating point 10 through lt 2 5 0 0 gt I Step 15 Similar to point 4 create point 13 by translating point 11 through lt 2 5 0 0 gt Step 16 This step begins the creation of curves Create a curve by selecting Curve as Object in the Geometry form The form is shown below completed and already applied hence 2 is shown in the CUrve ID List to create curve 1 Curve 1 is created using the 2_point method and the points used are and 2 Geometry o x Action Create Object Curve a Method Point i Curve ID List E Option 2 Point J Auto Execute Starting Point List Point 1 Ending Point List Apply Step 17 Similar to curve 1 create curves 2 through 11 by using Starting Point List 3 4 2 5 6 7 8 8 11 13 and Ending Point List 4 6 5 7 9 8 9 11 13 12 respectively In other wor
46. t it is referencing The Control Panel icons are explained below Refresh Icon Redisplays refreshes all of the graphics viewports 4 Display Cleanup Icon Removes all fringe and marker plots all automatic titles highlighting and deformed shape plots Repaints the viewport in wireframe mode fi Interrupt Icon Interrupts a command in progress This is useful when you want to abort out of an executing MSC PATRAN form E Undo Icon Undoes the last executed action of aMSC PATRAN form when an Apply was pressed MSC PATRAN Command Window MSC PATRAN also has a Command Window that appears at the bottom of the screen see below You can manually enter commands in this window but mostly this window is used to view the commands MSC PATRAN generates when a menu form is executed and to view errors or information messages ga_viewport_location_set default_viewport 0 000000 3 307240 1 A 4 Creating journal file afs lions odu edushome r rparadot cae_manual db jou at 12 Jan 06 10 34 34 al 4 Database version 3 2 created by 2004 12 0 044 successfully opened i j lga_viewport_location_seti default viewport 0 026144 2810501 1 The command line Commands Can optionally be typed in here The history window You can use the scroll bars at the bottom and right sides to scroll back or to scroll to the right 3 6 MSC PATRAN Application Form and Subordinate Form The radio buttons on the Control Panel will bring up a vert
47. t step is to submit our plate to NASTRAN for analysis It should be mentioned here that MSC PATRAN automatically generates the NASTRAN bulk data file bdf and also submit the bdf file to NASTRAN The way we do this is shown here The first thing is to click on the Analysis button of the control panel We have the form shown on the left below We want to analyze the Entire Model in Full Run The Job Name we supplied is classwk1 The user is free to use any job name Notice that the analysis code to be used is MSC NASTRAN and the solution type is Structural 3 42 To select MSC NASTRAN as the analysis code go to Preference menu Choose analysis option then choose MSC NASTRAN in the pop up menu of Analysis Code Analysis Jof x Y Translation Parameters Jof x Action Analyze i Data Output Object Entire Model i XDB F Print _j Punch Method Full Run per OUTPUTS Requests PS Built In OUTPUT Format Binary Code Ms c Nastran Tolerances Division Available jobs Mumerical Writing BuIK Data Format Sorted Bulk Data No job Name ficlasswk1 Job Description Grid Precision Digits fz Msc Mastran job created an p 14 Jan 06 at 1016 34 Node Coordinates reference frame 2004 Mac Mastran Version Translation Parameters Number of Tasks Eoo Solution Type J Write Properties on Element Entries Direct Text Input J Write Continuation Markers SUBCA
48. ties Load Cases Fields Analysis Results Insight XY Plot TAAA ANAA AAE ga_Viewport_location_set default_viewport 0 026144 2 810501 1 A ga_Viewport_size_set default_viewport 9 359621 6 353039 1 ga_Viewport_location_set default_viewport 0 000000 3 307240 1 4 Creating journal file fafs lions odu eduf home sr rparadol cae_manual db jou at 12 Jan 06 10 34 34 i al The Menu Bar selections are pull down menus which will be explained later in using the mouse p 3 7 Radio buttons are mutually exclusive choices in that only one radio button within a group can be pressed in at one time They work like the radio buttons in your car Only one button on your car radio can be pressed in at one time MSC PATRAN s heart tells you if it is ready to execute an option or if it is busy executing E Green means MSC PATRAN is ready and waiting to execute a form E Blue means it is busy but it can be interrupted with the Hand icon Red means it is busy and it cannot be interrupted 3 5 MSC PATRAN s on line help is an easy to use hypertext based documentation system You can enter the on line help either by pressing Help on the Menu Bar or by placing the cursor anywhere on a MSC PATRAN form and pressing the F1 key to get help on that particular form If your cursor selects anything that is in magenta in the on line help MSC PATRAN will quickly jump to another page in the on line help tha
49. yoda The procedures for printing are shown in Section III 3 3 Generally the user prints into a postscript file Then the file is sent to a printer of choice by using the Ipr command 1 e Ipr Pcae yoda filename 3 3 where printer is the name of the printer and filename is the postscript file generated How to quit MSC PATRAN To quit MSC PATRAN click the left mouse button on the File button of the control panel and select Quit from the pulled down menu If your want to start work on another database without quitting P3 PATRAN you can select Save instead of Quit to save the current database Next we will go through the following The menu components of MSC PATRAN How to use the three button mouse A highlight of how to modify the view of a model How to print the contents of a viewport 3 4 If1 3 2 Menu Components of MSC PATRAN MSC PATRAN Control Panel MSC PATRAN s Control Panel appears at the top of the screen example below The selections on this panel are divided by a horizontal line The selection above the line is MSC PATRAN s Top Menu Bar which includes MSC PATRAN s heartbeat and the on line help system The items below the line are a group of radio buttons and a group of Control Panel icons MSC Patran 2004 Jof x File Group Viewport Viewing Display Preferences Tools insight Centre Help a P 3 a 0 S D af Geometry Elements Loads BCs Materials Proper
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