2D Frame Analysis v2.0 User manual
Contents
1. Applying dynamic loads This can be done very simply following these steps 1 Set the time step number under the Time step tab on your right Options Units Colors Time steps Dynamic Analysis 2 Choose the time at which you want to impose a load in your model Current time o r Sec 0 0 222 0 444 0 889 3 Apply the loads in your model as you would do in case of a static analysis These loads will be imposed only at the selected time at 0 667 seconds 4 Continue applying nodal and element forces for each desired time step Viewing results of dynamic analysis 1 Choose the time at which you want to see the results 2 All model results will now refer to the selected time step Viewing graphs of dynamic analysis results You can watch the dynamic response of the model in the whole given time span 1 After dynamic analysis is complete click on the ey icon or on the Graphics dynamic analysis results item under the Tools menu ra Get Internal forces and stresses along frame element Graphic dynamic analysis results 2 The following form is displayed Plot dynamic analysis results Dynamic response 6 _y reaction of node 1 60 Axial force zZ o Ww Shear force Bending moment 1 0 1 5 Time sec 3 You can choose among many characteristic values nodal displacements reactions element internal forces etc which will represent the Y axis T2. Applying spring restraints supports on a node 1 Click on the 7 icon and select from the following menu Hor translational spring e5 Ver translational spring Rotational spring 2 Enter the spring stiffness in the following form that will come up Spring stiffness 10000 kN m Cancel 3 Click on the node you want to apply the spring support to 4 Spring support has been assigned Please note that this could also be done from the Auto generated nodes tab on the left program menu Deleting and modifying a frame element 1 Either select the element graphically and double click on it or right click or select it from the frame elements combo box in the frame elements menu on your left lt Frame elements a T Exit New Delete OR double click or right click 2 The menu with the examined frame element s data will show as following Frame elements Edit New Delete 3 Click on Edit in order to enable the controls and start modifying the data or on Delete to delete the selected frame element 4 Then click on OK to finish Modifying a node 1 Either select the node graphically and double click on it or right click or select it from the nodes combo box in Auto generated nodes menu on your left 2 The menu with the examined node s data will show as following Degree of nial veloces 3 Click on Edit in order to enable the c
3. High quality analysis reports with all analysis results including stress internal forces and displacements diagrams as well as drawings of the static model its deformed shape and the axial shear forces and moment diagrams Analysis report can be exported to pdf rtf xls and xml formats or it can be directly be printed All model data are exported to access database COORDINATE SYSTEMS Two coordinate systems are used by the program The local one and the global one The global system is the same for the whole model The local system is defined by placing its x axis on the examined element pointing from the smaller to the greater edge node number This convention is respected at every reference to local and global coordinate systems Local coordinate system of element 9 297 806 203 889 Global coordinate system Please note that the positive rotation convention is the counter clockwise C for both coordinate systems MENU DESCRIPTION Material tab You can define materials in this tab Each material is defined by the following properties 7 Materials a i 6 Ge Name Modulus of elasticity kN fm Specific weight KN fm 3 Thermal coefficient 1 C a name the modulus of elasticity FFF the specific weight this value is used only during dynamic analysis in order to calculate the mass matrix the thermal coefficient which corresponds to the axial strain when a unary temperature change is applied to a sp
4. EATURES The Frame Analysis application is available in 3 different packages Static Dynamic and Truss Static Analysis version Static analysis of all kind of frames Truss analysis version Static analysis of all kind of trusses Dynamic analysis version Static and dynamic analysis of all kind of frames and trusses Each licensed feature from the following is activated Features in red are only available in the Dynamic Analysis version A Static Edition Features Analysis fFFFFF FFF FEF FE FF Use of highly flexible general finite element method Static and dynamic analysis of multi span beams 2D trusses and 2D frames Modal analysis and eigenvalues estimation User controlled damping coefficient Mode superposition method in order to calculate the dynamic response Automatic creation of consistent mass matrix Engissol s patent Multi step dynamic analysis which is fully customized User controlled step and time parameters Definition of time dependent loading on elements and nodes Unlimited number of Nodes and Beams 3 Degrees of freedom per Node 6 per Beam Supports all major measure units All type of boundary conditions fixed rollers etc Translational and rotational spring supports Initial displacement and speed conditions Extremely easy model creation no need to first define nodes and then elements nodes are produced automatically Consideration of thermal loads Pre processing FF fF fF FF T
5. Engineering Software Solutions Technical Software Company Engineering Software Solutions SAH WeMILAOG TFTHNLONHLE 2D Frame Analysis Static and dynamic analysis of frames and trusses v2 0 User manual April 2008 GENERAL Thank you for using Engissol products Our R amp D department which constitutes of experienced engineers and programmers can assure you that you will be provided with a finite element application of high standards and guaranteed accurate analysis results Engissol s know how with respect to engineering application development is incomparable a fact that is proven by thousands of satisfied end users around the world 2D Frame Analysis is a finite element application that can perform static and dynamic analysis of plane frames and trusses with any type of complexity It uses the powerful and well known analysis core ENGISSOL FEM Library which has received many awards because of its flexibility in handling large scale linear and non linear arithmetic problems 2D Frame Analysis is intentionally limited to linear static and dynamic analysis in order to cover the everyday engineering demand efficiently It has been tested thoroughly to meet specific standards and is considered to be the best frame and truss analysis application at a very low price Apart from this at Engissol we are always looking for feedback on how to improve our products You can contact us at engissol engisso com PROGRAM F
6. N m X Translation m Y Translation m z Rotation rad Internal forces and stresses Internal forces and stresses along member By choosing the desired frame element and the distance from the starting node you can get internal element forces axial shear forces and bending moment at this location Normal and shear stresses are also calculated at this location Please note that internal forces are displayed in the local coordinate system of the element Internal forces and stresses along member Ex Distance from starting node 4 Ending node Starting node Intemal forces Adal Force Nonnal stress 2 Shear stress Classic statics convention The internal forces are presented with respect to the following coordinate system which constitutes the classic statics convention N Ending node AT M Nn node Main window description The main window of the application includes the following tab page collection A comprehensive description of each tab page follows a P E eee p p P Model Deformed Axial diagram Shear diagram Moment diagram Modes Model tab g A N E P a TY e The static model can very easily be created from this window The toolbar on the left can help you during the drawing of the model interactively A description of each toolbar button follows Single selection Boxed selection kX Clear selection it Pan LEL Zoom extends D Zoom in kad Zoom out a a Zoom win
7. age You can define here parameters that are used during the dynamic analysis such as the time period and the time step number These options affect only the dynamic analysis procedure By setting the current time parameter you can see your model both loads and results at the selected time Opti Units Time steps starting time Ending time Current time sec Dynamic preferences page The following dynamic preferences are defined in this page They only affect the dynamic analysis procedure Damping coefficient ksi The damping coefficient that is applied to each mode as modal damping equal for all modes Zero value means no damping Ksi mainly mem Units Colors Time steps Dynamic Analysis Damping coefficient ksi Number of modes to find Significant digits for eigenvalues Max iterations for a mode Max iterations for mode searches 600 depends on the material of the structure ff mode Number of modes to find The desired number of nodes to be found Significant digits for eigenvalues Decimal accuracy of the calculated eigenvalues Max iterations for a mode Maximum number of iterations for the estimation of a Max iterations for mode searches Maximum searching iteration number to estimate a mode It is suggested not to change the last three parameters in order to avoid arithmetic and convergence problems during the dynamic analysis Results tab In this tab all ana
8. der the Geometry page Applying loads on a frame element 1 Click on the button and select from the following menu Horizontal load Vertical load Clear 2 Enter a load value in the following form that will come up Load value 10 k m x caa 3 Click on the element you want to assign the load to 2 4 The element load has been assigned to the selected element a Please note that this could also be done from the Frame elements tab on the left program menu under the loads page Applying loads on a node 1 Click on the B 7 icon and select from the following menu Hor load Ver load G Moment 4x Clear 2 Enter a load value in the following form that will come up Load value 50 kN ox canel 3 Click on the node you want to assign the load to 4 The element load has been assigned to the selected node T Please note that this could also be done from the Auto generated nodes tab on the left program menu Applying restraints supports on a node 1 Click on the 7 icon and select the desired support type from the following menu Hor Roller Ver Roller Hinge Fixed Hor fixed roller Ver fixed roller 2 Click on the node which you want to apply the restraint to 2 ho 3 Restraint has been assigned to the selected node Please note that this could also be done from the Auto generated nodes tab on the left program menu
9. dow Draw an element IH Apply element load ER Apply nodal load ra Apply restraints supports 7 Apply spring restraints supports oi Clear restraints Supports Deformed tab r Deformed Axial diagram The deformed shape of the model is displayed in this tab Axial diagram tab Model Deformed Axial diagram Shear diagram if Moment diagram Modes 49 988 49 988 The axial force diagram is displayed in this tab Shear diagram tab i if Shear diagram The shear force diagram is displayed in this tab Moment diagram tab 7 141 309 The moment diagram is displayed in this tab Modes tab lt _ _ _ _ O rEEnEnEnn DEER ES 2 Z 3 Y Next Mode 1 x Period T 0 392 sec O The calculated mode shapes are displayed in this tab By clicking the Next button more mode shapes are displayed The calculated period for each mode is also displayed Status bar description The status bar includes the following controls Draw grid Snap to grid Snap to nodes Draw element loads Draw nodal loads Draw supports Draw reactions Show selected only x 6 m y 3m Drawing a frame element 1 Click onthe icon 2 Move the mouse over the grid and click on the desired starting point 3 Click on the corresponding ending point Please note that this could also be done from the Frame elements tab on the left program menu un
10. ecimen of this material Remember that the Default material cannot be deleted By clicking the From library button the following form is displayed which gives you the ability to insert a pre defined material Steel concrete all grades wood all grades and custom material definition are supported Material library Lax Concrete C20 Custom Modulus of elasticity 210000000 kN m 2 Specific weight 78 5 kN 7m 3 ok cae Section tab Sections are defined in this tab The following properties are needed in order to define a section Name Cross section area Moment of inertia Section height aname the cross section area EFF the moment of inertia this inertia moment corresponds to an axis pointing into the screen 4 the section height which is used during the calculation of the bending moments on the frame element due to temperature differences above and below it Remember that the Default section cannot be deleted By clicking the From library button the following form is displayed which gives you the ability to insert standard cross sections Material library Px Section ree Sa 0 00201 Standard steel sections IPE amp IPN Moment of inertia 1E 05 IHL amp HE IPE 160 Section height 0 16 Frame element tab In this tab all needed data to define a frame element are given Geometry page The geometry of both starting and ending nodes is given in thi
11. he X axis of the graph is the time 4 The graph which is automatically created shows the behavior of the model in the time span in a compact form This is of course very useful Creating an analysis report 1 Click on the Fe icon 2 A window with the created report will display 3 By using the buttons A you can browse your report As you can see it contains all model data and results as well as all diagrams regarding the deformed shape the internal forces diagrams axial shear force and bending moment and the mode shapes 4 You can export the report to many formats including rtf Word and xls Excel file format by clicking on the ah icon 5 The report can be printed by clicking on the icon In case of dynamic analysis the results in the report refer to the latest time step
12. hould be unchecked for the corresponding degree of freedom The related spring constant box will then be enabled You have to give then the constant of the matching spring translational or rotational Remember all these options refer to the global coordinate system Initial displacements The initial if any displacements for degrees of freedom x y and rotation for degree of freedom z are given in this section They are taken into account during the static and the dynamic analysis Initial velocities for dynamic analysis The initial if any velocities of the node are given in this section They are used to define the initial conditions of the model during the dynamic analysis and they refer to the global coordinate system Options tab Coordinates spring support constant C X Translation of im C Y Translation kN fm C Z Rotation kN m jra Initial displacements Degree of Initial freedom displacements rotation C X Translation 0 mi C Y Translation 0 C Z Rotation Degree of freedom C X Translation mo fsec C Y Translation m sec Initial velocities C Z Rotation rad sec In this tab general program options are defined Units page The measure units are defined here You can select among a wide variety of units The grid size is also defined here Colors page WARI HERE From this page drawing colors can be customized Time steps p
13. lysis results regarding nodes and frame elements are presented In case of dynamic analysis these results refer to the times step selected at the Time steps page in the Options tab Nodes page Nodal analysis results are presented in this section For the selected node the displacements x y and rotation z are shown as well as the reactions if any In case of spring supports the corresponding spring reactions are shown All these results refer to the global coordinate system of the model Results Nodes Frame elements Node 1 ad X Translation m Y Translation m z Rotation rad Reaction X kN Reaction Y kN Reaction Z kN m Spring reaction X kh Spring reaction kh Spring reaction Z k m Frame elements page Frame elements analysis results are presented in this section For the selected frame element the edge node displacements rotation are shown as well as the internal forces acting on the edge nodes of the element While all displacements and rotations refer to the local coordinate system of the element the internal forces are presented respecting the classic statics convention By clicking on the Internal forces and stresses button you can get the internal forces and stresses at locations along the element length rane element Results on Starting Node Axial force kN Shear force kN Moment kN m X Translation m Y Translation m 2 Rotation rad Results on Ending Node Axial force kN Shear force kN Moment k
14. ontrols and start modifying the data 4 Then click on OK to finish Creating modifying and deleting a material 1 Select the material from the materials combo box Materials Edt New Delete Name Modulus of elasticity 2 Click on Edit to modify its data on Delete to delete it or on New button to create a new material 3 Then click on OK to finish Creating modifying and deleting a section 1 Select the section from the materials combo box Defaut gt Eat New Delete Name Cross section area Moment of inertia Section height 2 Click on Edit to modify its data on Delete to delete it or on New button to create a new section 3 Then click on OK to finish Running static analysis 1 Make sure that the option Linear static analysis is checked under the Calculate menu Calculate Dynamic Modal and direct integration 2 Simply click on Run analysis item or on the A toolbar icon Tools Hell Running dynamic analysis 1 Make sure that the option Dynamic Mode superposition analysis is checked under the Calculate menu Calculate Tools Help 3 Make sure that the preferences under the Dynamic Analysis tab are correct Options Number of modes to find Significant digits for eigenvalues 4 Max iterations for a mode 100 Max iterations for mode searches 600 4 Simply click on Run analysis item or on the A toolbar icon Calculate Tools Hell Analysis type
15. op quality graphics rendering Full GUI including zoom pan grid snap options Every user action can be done graphically at real time Immediate switch to other measure units Easy model creation members loads supports etc in a user friendly environment with many graphical features Embedded library with major steel section shapes Definition of custom beam sections FFE FREE Embedded library with major materials wood steel concrete Definition of custom materials Easy and fast modification of the material properties End release option at specified degrees of freedom all types of end releases are supported Quick apply vertical and horizontal distributed loads on elements Application of time dependent loads at each time step graphically Post processing FFE fF FFF F FF E Calculation and drawing of the deformed shape of the given model Analytical view of the results of analysis the geometry the static model the loads etc Drawing of axial shear force diagrams and bending moment diagram Scaling to above diagrams and the deformed model interactively Internal forces calculation at each location along the members Stress calculation at the top and bottom fiber along each member Graphic representation of every model parameter internal forces moments displacements rotations reactions vs time Drawing axial shear force and bending moment diagrams at each time step Drawing of deformed shape at each time step
16. s page Frame elements You can define a frame element by clicking on the New button or you can insert it graphically by using the button of the program toolbar Section page You can choose here the section of the frame element that you are about to define Frame elements nen Material Releases Loads me Default Material page You can choose here the material of the frame element that you are about to define Frame elements tt Eat New Delete a Geometry Release page The end releases of the frame element are defined in this page They all refer to the local coordinate system of the frame element Frame elements Loads page Distributed loads on the frame element are defined in this page They refer to the local coordinate system of the frame element lt Frame elements gt Edt New Delete Th a Geometry section Material Releases Loads Horizontal distributed load kN fm Vertical distributed load kN jm Node tab As described the nodes are generated automatically after the creation of each frame element In this tab the properties of the generated nodes are given as following 4 4 Coordinates The coordinates of the node in the global coordinate system Nodal loads The loads applied to the node in the global coordinate system Supports The supports of the node In case of springs the full support option s
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