Introduction to PolyUMod & MCalibration
Contents
1. True Stress MPa Set Material Model Thre The main window now contains the experimental load cases and a material model with preliminary material parameters Copyright Veryst Engineering 2015 i vn Name Value aa muA 192 15 o b metant 200 1 Click the Run Once button to evaluate the current material model and Le 3 l mbdaaL sai parameters The initial material model does not agree well with the experimental maLib z 4 kappa 2000 data since we have not started to calibrate the material parameters 5 tauHatA 7 256 a o000122 2 Click the XO button to rescale the material parameters 7 mA 9 729 i ee l 25 vi 7 Simulation done le n an fal mE z y Opt Method Automatic Best NMAD Fitness with Weight Factors 182 082 JRun Time 0 794 s Function Evaluations 1 25 Preliminary Calibration I scale Material Parameters In this case the model predicted Scale material parameters to match the experimental data stresses were about 4 times too high Scale the predicted stress by a constant factor By selecting Scale material parameters to match the experimental data and Cancel clicking OK MCalibration will automatically rescale all material parameters with units of stress so that the material model predictions approximately match the maximum experimental stress Copyright Veryst Engineering 2015 26 Model Calibration File E2. Introduction to V PolyUMod amp MCalibration Veryst Engineering LLC 781 433 0433 Needham MA Copyright Veryst Engineering 2015 Outline e Introduction e Installation and Files PolyUMod e PolyUMod Models A Library of Advanced User Materials e MCalibration Workflow i Copyright Veryst Engineering 2015 2 Introduction PolyUMod PolyUMod is a library of advanced user material models for Abaqus ANSYS and LS DYNA PolyUMod is delivered as a shared library file dll on Windows and so on Linux PolyUMod is a FE software plugin which is used when calculating the stresses for a given strain increment The PolyUMod actions cannot be directly seen The software is controlled by the provided global and material specific parameters Introduction MCalibration McCalibration is a GUI application for Windows and Linux computers McCalibration can be used to calibrate all material models in the PolyUMod library and all native material models in Abaqus and ANSYS McCalibration takes existing experimental data and then finds the best material parameters for the selected material model The calibrated material model can be exported to Abaqus CAE and ANSYS WB Installation amp Files The PolyUMod and MCalibration installer puts all files in opt PolyUMod for Linux C Program Files PolyUMod for Windows Copyright Veryst Engineering 2015 gt opt gt PelyUMod E Abagus test cas
3. Reload Data File Help Clear Data undo Smooth Column Pa Create Load Case Graph C Redo Goto Line Change Nr Data Points Pie e e e lil olatinio lunl asalwtin Piwinirio Right click after selecting a group of cells for more data options Make Column Start from 0 Time a 9 78343195266 19 7625248521 29 736883432 39 7203153846 49 7017751479 59 6856017751 69 659960355 79 6414201183 89 6252467456 99 6043390533 109 581065089 119 562524852 129 543984024 Copyright Veryst Engineering 2015 Engineering Strain 0 0016534 0 0033398667 0 0050255333 0 0067127333 0 0083996 0 0100868667 0 0117725333 0 0134594 0 0151466667 0 0168331333 0 0185192 0 0202060667 0 0218929333 Multiply or Add Cells Engineering Stress 0 0 43281 0 76299 1 04102 1 32088 1 56923 1 79433 1 95623 2 13868 2 33903 2 51664 2 65185 2 81991 2 98644 Engineering Strain 0 4 0 35 0 3 o N ul o N o H u 0 1 0 05 X Axis Time 1 Repeat these steps to assign column 2 as engineering strain and column 3 as engineering stress 2 Save the column information to the experimental data file by clicking on the Save Data File button 3 Start creating a load case for the material model calibration by clicking on the Create Load Case button Note a load case is
4. No Target Mechanical APDL Input Arguments ARG1 ARG2 ARG3 ARG4 ARGS ARG6 ARG7 ARG8 ARGS Warnil The currently selected unit system differs from the unit system that we Project gt Model gt Geometry gt Solid Bodies gt So 9 13 2012 9 44 40 AN Press F1 for Help 1 Message No Selection Metric m kg N s V A Degrees rad s Celsius Z ee OO al Copyright Veryst Engineering 2015 38 MCalibration Summary e MCalibration is an easy to use tool that can calibrate any material model e One of the most powerful features of MCalibration is that is can use almost any combination of experimental data e g tension compression shear biaxial triaxial stress relaxation creep DMA Poisson s ratio etc McCalibration can also use direct finite element simulations of more complicated experimental tests to calibrate a material model Copyright Veryst Engineering 2015 39 Support e For technical support contact Dr Jorgen Bergstrom at jbergstrom veryst com Copyright Veryst Engineering 2015 40 YE COMSOL certified consultant gt DS SIMULIA Veryst Engineering is a software partner with Simulia Veryst Engineering is a software partner with ANSYS
5. 1 95623 Next we will specify what the different columns of data contain 79 6414201183 0 0134594 2 13868 89 6252467456 0 0151466667 2 33903 99 6043390533 0 0168331333 2 51664 109 581065089 0 0185192 2 65185 119 562524852 0 0202060667 2 81991 500 1000 1500 2000 2500 3000 3500 4000 129 543984024 0 0218929333 2 98644 z Coumhdi Right click after selecting a group of cells for more data options X Axis Column 1 Y Axis Column 2 opt Method Automatic Best NMAD Fitness with Weight Factors 0 Run Time 00 00 00 Function Evaluations 0 Copyright Veryst Engineering 2015 16 Experimental Data vE neade ronec column 1 Column Name Ome isis 2 Then click the Set O True Strain JIU Na button D Engineering Strain O True Stress 3 Select and click D Engineering Stress Engineering Storage Modulus Engineering Loss Modulus This assigns column 1 as _ Engineering Strain Amplitude a time column Engineering Mean Strain Frequency Force Displacement _ Temperature Other Co umn 1 ok Cancel Copyright Veryst Engineering 2015 Experimental Data File Edit Load Cases Quit Kit 213 Create Data Data Fi File name Tension_0_017_s txt Nr Rows 360 Nr Columns 3 H Set Column Name Material Model Simulation View Help H 2 ave Data File As Load Data File Save Data gt View Data File i
6. the same as an experimental test that can be used for material model calibration Time v Y Axis Engineeri Opt Method Automatic Best NMAD Fitness with Weight Factors 0 JRun Time 00 00 00 Function Evaluations 0 18 Experimental Data B Load Case Setup Load Case Type Experimental Data time 0 X Load Case Name Tension_0_017_s Experimental Data Loading Mode Time Stepping Plot Styles Fitness Weights Miscellaneous Select Experimental Data File Name of Experimental Data File ration_Introduction Tension_0_017_s txt The experimental file contains 360 rows and 3 columns Rename File Control Strain Control X v Time data available Time Column 1 Strain Column 2 Strain Type Engineering Strain _ Transverse strain data available Column 4 v Stress data available a Stress Column 3 Stress Type Engineering Stress v Fixed Temperature Temperature Kelvin 293 Variable Temperature Temperature Column 0 _ The sample was conditioned Number of Load Unload Cycles 1 Max Engineering Strain 0 50000 Magnitude of Engineering Strain Rate Final Hold Time s 60 0000 _ Only consider the first 360 B rows of data Column 2 0 4 experimental data 1000 1500 The load case setup
7. AB P AN M AB P AN P LS P M AB P AN P LS P M AB AB P AN P M AB P AN P LS P M AB P AN P LS P M AB P AN P LS P e AB P AN P LS P M AB P AN P LS P M AB P AN P LS P M AB P AN P LS P M AB P AN P LS P M AB P AN P LS P M AB P AN P LS P M AB P AN P LS P M AB P AN P LS P M AB P AN P LS P M AB P AN P LS P M AB P AN P LS P M AB M AB M AB AB M AB M AB M AB M AR Description PolyUMod Options Material Info and Propertieg Three Network Model TNM The experimental data in this example is for a medium Solver Abaqus ANSYS LS DYNA Abaq a density polyethylene MDPE Supported so the Three Network Model The three network model TNM is a material thermoplastic materials It has many features t but is designed to be more numerically efficien the more general Parallel Network Model The TNM model requires the material para TNM from the PolyUMod library is likely going to be a suitable material model Select the Three Network Copyright Veryst Engineering 2015 M MCalibration AB Abaqus AN ANSYS LS LS DYNA CO COMSOL AB P Abaqus with PolyUMod AN P ANSYS with PolyUMod LS P LS DYNA with PolyUMod Model item then click OK Table 1 Material parameters used by the parameters 18 to 23 are optional and only used by Abaqus Explicit In
8. Load Cases QO wf Quit Material Model Simulation View Help Open MCal File Save MCal File Import Material Model bod gt Run Once gt T Q Run Calibration Pause Calibration Stop Calibration Graph Window Fit Load Case Name 6 06 Tutorials 4 02 as ine it Data E J Library L Tension_0_017_s Tension_0_00017_s Set Material Model Three Network Model 10 7 5 True Stress MPa v 25 w Le F 7 Q ta gt E Tension _0_017_s experimental Tension_0_017_s prediction Tension_0_00017_s experimental 12 5f Tension_0_00017_s prediction Name Value ower Bount Ipper Boun Optimize muA 59 4560 0 vil Output Comments thetaHat 0 a Runtime Output Comments Optimiz lambdaL 5 09397 1 10 v3 Improvement U 07LU550 kappa 746 957 0 PP Nelder Mead Simplex Optimization tauHatA 2 57521 0 J5 max number of iterations 5 number of variables to optimize a 0 000122 Stop the calibration Calibration interrupted 2 mA 7 65902 1 1 25 v7 Optimization done n n PE Copyright Veryst Engineering 2015 ZA Parametric Study E 4a Export Model Save Predictions MCalibration M itm uHatE6 63874 imBi23478 O i muce4 36 14 Sometimes it is useful to examine how a material model behaves under conditions that have not been experimentally te
9. NINNAARAAT 1 70422 Tension_0_00017_s txt 8 69 659 9 79 641 iO 0 0 10 89 625 2 0 0600710059172 0 0010152 0 24612 11 99 604 3 0 17285995858 0 0029213333 0 82719 2 109 58 4 0 285644970414 0 0048274 1 37232 79 119 56 5 0 392958579882 0 006641 1 83245 14 129 54 6 0 496311639053 0 0083876667 2 23962 15 139 52 7 0 597660751479 0 0101004667 2 57608 16 149 50 8 0 69813412426 0 0117984667 2 92867 17 159 48 9 0 798161733728 0 0134889333 3 22346 10 0 898161733728 0 0151789333 3 48739 11 0 998023668639 0 0168666 3 75748 12 1 09786193491 0 0185538667 3 96155 13 1 19760552071 0 0202395333 4 18045 14 1 2973964497 0 021926 4 37969 15 1 39723471598 0 0236132667 4 56692 16 1 49700197041 0 0252993333 4 79743 17 1 596934911124 0 0269882 4 97169 Copyright Veryst Engineering 2015 13 In this example we will use Uniaxial tension data at two different strain rates for a real application it may be useful to have additional experimental data The figures to the left show parts of the data files using a text editor The first step is to read these files into MCalibration Experimental Data File Edit Load Cases Material Model Simulation View Help o ty Es Quit Open MCal File Preferences VERYST ENGINEERING Recent MCAL Files PEEK_calibrate_BB mcal home jorgen Veryst Projects Training_PolyUMod_MCalibration PEEK PEEK_calibrate_BB mcal PEEK_calibrate_TNM_v7 mcal home jor
10. Time 00 00 00 Function Evaluations 0 Copyright Veryst Engineering 2015 14 Experimental Data File Edit Load Cases Material Model Simulation View Help o t Es Quit Open MCal File Preferences LAKIRAN The main window has 5 different sections Welcome This is the section that is shown here This section can be used to open recently used calibration files called mcal files Recent MCAL Files PEEK_calibrate_BB mcal home jorgen Veryst Projects Training_PolyUMod_MCalib PEEK_calibrate_TNM_v7 mcal home jorgen Veryst Projects Training_PolyUMod_MCalib PEEK_calibrate_TNM_v7 mcal home jorgen Documents Conference_2014_Simulia Cali Tutorials This section contains different tutorials H L Hez Data This section is used to view and edit experimental data files calibrate_PRF3 mcal home jorgen Veryst Projects Training_PolyUMod_MCalibr Calibrate This section is used to calibrate material models and to examine the response of a material model calibrate_TNM mcal home jorgen Veryst Projects Training_PolyUMod_MCalibr calibration_Abaqus_Hysteresis_Yeoh mcal home jorgen Veryst Projects Training_PolyUMod_MCalib calibration_BB mcal _ Library Contains a collection of already calibrated models for different home jorgen Veryst Projects Training_PolyUMod_MCalib materials calibration_TNM mcal home jorgen Documents ExperimentalData_Cali
11. al Stress Relaxation B Load Case Setup Load Case Type Virtual Experiment Segments X Load Case Name Virtual Relaxation Segments Experimental Data Loading Mode Plot Styles Fitness Weight Miscellaneous KJ Segment 1 eng strain rate 0 01 until eng strain 0 1 The load case dialog now contains the first loading segment of our virtual experiment Next we need to create the second stress relaxation segment Click the Add Segment button Add Segment a Segment Edit Segment Move Segment Up Move Segment Down Save Cancel Copyright Veryst Engineering 2015 32 Virtual Stress Relaxation E Specify Segment Properties Control The second loading segment has Run Engineering Strain Rate Value 0 constant strain for 60 seconds Click Save Target Use a second target condition stop if either condition is true r Until Engineering Temperature A A Start Temperature 293 00 End Temperature 293 00 Time Stepping e Specify the minimum number of time increments 300 Manually specify the time increment sizes ime incremen Cancel Copyright Veryst Engineering 2015 33 Virtual Stress Relaxation Load Case Setup Load Case Type Virtual Experiment Segments X Load Case Name Virtual Relaxation Segments Experimental Data Loading Mode Plot Styles Fitness Weight Miscellaneo
12. brationg calibrate_PTFE_TNM mcal home jorgen Documents ExperimentalData_Calibrationg calibrate_BB mcal home jorgen Veryst Projects Training_Class_2014_Nr4_ ee ee gt Switch to ene Data section ay clicking on the Data icon home jorgen Veryst Projects Training_ Class_2014_Nr4_IntrovExercises Hyp Open Clear List Opt Method Automatic Best NMAD Fitness with Weight Factors 0 JRun Time 00 00 00 Function Evaluations 0 Copyright Veryst Engineering 2015 15 Experimental Data File Edit Load Cases Material Model Simulation View Help o g ty m ty Ee Quit Create Data Load Data H ave Data File Save Data File As Reload Data File Clear Data Create Load Case Preferences Graph 9 Data _ File name Tension_0_017_s txt View Da Help i Undo C Redo Nr Rows 360 Nr Columns 3 gt Experimental data Tutorials Set Column Name Roth Column Goto Line Make Column Start from 0 Multiply or Add Cells Column 1 Column 2 Column 3 0 0 0 9 78343195266 0 0016534 0 43281 19 7625248521 0 0033398667 0 76299 Click on Load Data File to read in the first experimental data file Tension _O 017_s txt 29 736883432 0 0050255333 1 04102 0 2 39 7203153846 0 0067127333 1 32088 Column 2 49 7017751479 0 0083996 1 56923 99 6856017751 0 0100868667 1 79433 69 659960355 0 0117725333
13. dex Symbol Umat Unit Description Name 1 Ha muA S Shear modulus of network A 2 6 thetaHat T Temperature factor 3 A LambdaL Locking stretch 4 K kappa S Bulk modulus 5 Fi tauHatA S Flow resistance of network A 6 a a Pressure dependence of flow 23 Material Model McCalibration then asks if the Three Network model should iB TNM setup be made temperature dependent t Do you want to make the TNM temperature dependent In this case we select NO since No the experimental data was only at room temperature Copyright Veryst Engineering 2015 24 Preliminary Calibration File Edit Load Cases Material Model Simulation View Help ty H Quit Open MCal File Save MCal File Import Material Model Run Once Run Calibration Pause Calibration Stop Calibration Parametric Study Export Model Save Predictions Experimental Tests Load Cases rod A gt Q O A Ge Graph Window Load Case Name 1 L S Fit ga 165 81 198 36 E S c 3 Library BM SG N Material Model E Tension_0_017_s prediction p pemaes A Tension_0_00017_s experimental nae iymppasz000 FA Tension_0_00017_s Tension_0_00017_s prediction ar ba Mcalibration M L Tension_0_017_s Tension_0_017_s experimental Fiejame ugya iaz0000122 i ma 9 729 im40 i i muBe 131929 imupedg23 O i beta 11 122 i tmuHst 25399 m3 729 i muc 8 3466
14. dialog box supports many different types of experimental data In this case all of the default settings are OK so simply click on the Save button 2000 2500 3000 3500 4000 Column 1 X Axis Column 1 v Y Axis Column 2 Copyright Veryst Engineering 2015 19 see cance Experimental Data File Edit LoadCases Material Model Simulation View Help MCalibration switches to the ey H a gt ate QO Calibrate section when the Quit Open MCal File Save MCal File Import Material Model Run Once Run Calibration Pause Calibration Stop Calibration Para save button is clicked in the load case dialog Graph Window aSa Load Case Name 12 5 FA Tension_0_017_s Tension 017_s emerim Before starting the calibration we need to read in the second experimental data file So click on the Data icon True Stress MPa 2 5 0 0 05 0 1 0 15 0 2 0 2 0 3 0 35 Set Material Model No Material Model Selected True Strain Name Value ower Bound Jpper Bounc Optimize Output Comments Runtime Output Comments Optimization Progress Version 2 6 0 Created Sep 19 2014 05 07 36 Your MCalibration license expires in 124 days Ball impact load case enabled Reading file Tension_0_017_s txt containing 360 rows of data Reading file Tension_0_017_s txt containing 360 rows of data Creating load case Tension_0_017_s Reading experimental data f
15. dit Load Cases Material Model Simulation View Help GQ H noa gt 7A E Quit Open MCal File Save MCal File Import Material Model Run Once Run Calibration Pause Calibration Stop Calibration Parametric Study Export Model Save Predictions Experimental Tests Load Cases Graph Window N Fit Load Case Name 17 76 L Tension_0_017_s 2 15 07 f REIC m MCalibration M Tension_0_017_s experimental Tension _0_017_s predicwon 5 ce me Tension_0_00017_s experimental pee TT True Stress MPa A A P i Rescaling the material parameters improves the model predictions but the predictions are still not accurate Each material parameter can either be fixed or part of the Name Value ower Bours pper Bouni Optimize 4 1 muA 71 7639 0 v optimization The Optimize column specifies the state of the a eee a a parameters All parameters with a non zero positive value are amet St s a is included in the optimization If two parameters are given the 4 kappa 746 957 0 aa 9 same optimization value then those two parameters are 5 tauHatA 2 70996 0 v 5 are forced to have the same unknown value A 9 729 1 4 25 vj 7 fi 5 5 S Click Save File to save the current calibration file ga n 40 A 2 b Opt Method Automate Click Run Calibration to start optimizing the material parameters Copyright Veryst Engineering 2015 27 Model Cal
16. efault 0000 settings and click Save D Variable Temperature Temperature Column 0 The sample was conditioned Final Hold Time s 60 0000 10 15 20 25 Column 1 Only consider the first 356 P rows of data X Axis Column 1 v Y Axis Column 2 Cee ea Copyright Veryst Engineering 2015 21 Experimental Data File Edit Load Cases Material Model Simulation View Help oO ey H moa ad m Q Quit Open MCal File Save MCal File Import Material Model Run Once Run Calibration Pause Calibration Stop Calibration Para active The next step is to select a suitable material model Click the Set Material Model button Experimental Tests Load Cases Graph Window Fit Load Case Name L L Tension_0_017_s Tension_0_017_s experimental Tension_0_00017_s experiment True Stress MPa l a Library 0 15 0 2 True Strain Set Material Model No Material Model Selected Name Value ower Bound Jpper Bounc Optimize Output Comments Runtime Output Comments Optimization Progress meduUrng TIte TENSIUON_U_UVI7_S XC CUNCAININY 30W TUWS UT Udta Reading file Tension_0_017_s txt containing 360 rows of data Creating load case Tension_0_017_s Reading experimental data file Tension_O_017_s txt Reading file Tension_ _00017_s txt containing 356 rows of data Reading
17. els 1 4 3 Model 1 f Parts The model tree then contains the Lz Materials 1 calibrated material model MCalibration material S Calibrations Sections amp Profiles rhb Annnenthhs Copyright Veryst Engineering 2015 37 Import Model Into ANSYS WB File Edit View Units Tools Help Solve tM mb s A iy W worksheet ix R YEA ly AARDE SLAAN Or Show Vertices Wireframe M Edge Coloring Avy Av Av Av Av A Pl thicken Annotations Show Mesh Show Coordinate Systems Commands Export iImport 2 Refresh 0 ITBDATA 11 33 ITBDATA 12 23 tl A LEI ITBDATA 13 1 GMU h TBDATA 14 500 GRAPPA el a 3 ae coca MCalibration as a command under ITBDATA 16 0 PAILV ITBDATA 17 28 91 mua 1 Soar ie Geometry gt Solid ITBDATA 19 5 27483 lambdaL ITBDATA 20 4189 66 kappa ITBDATA 21 13 9036 tauHatA ITBDATA 22 0 000263973 la ITBDATA 23 12 6624 mA ITBDATA 24 0 In ITBDATA 25 152 599 muBi ITBDATA 26 2 92555 muBE ITBDATA 27 83 7523 beta ITBDATA 28 45 3772 tauHatB ITBDATA 29 9 67938 mB ITBDATA 30 42 6211 muc ITBDATA 31 0 lq ITBDATA 32 0 alpha ITBDATA 33 293 thetad l File Name _ C Users jbergstromiFiles Veryst Projects VO475 Covidi jsncrs conse cess z File Status All data current N Graphics mands Definition a Suppressed
18. es ANSYS_test_cases Case_Studies E Documentation B License MCalibration_Test_Cases 1 es MCalibration_Test_Cases_ 2 E Model_Library E platforms a PolyUMod_Abaqus_611 PolyUMod_Abaqus_ 612 B PolyUMod_Abaqus_613 E PolyUMod_Abaqus_614 E PolyUMod_ANSYS a Validation_Abaqus Installation_Instructions txt a libicudata so 51 libicui18n so 51 libicuuc so 51 libiomp5 so libQtSCore so 5 libQtSDBus so 5 a libQtSGui so 5 libQtSMultimedia so 5 libQtSNetwork so 5 libQESOpenGL so 5 libQt5Positioning so 5 libQtSPrintSupport so 5 libQESQmLso 5 libQESQuick so 5 libQtSSensors so 5 libQESSqLso 5 libQtSSvg so 5 libQESWebkKit so 5 libQtSWebkitWidgets so 5 libQtSWidgets so 5 2 mecal mime xml MCalibration MCalibration bin E MCalibration_48 png setup_mcalibration_integration sh 8 Veryst MCalibration desktop License Server The PolyUMod and MCalibration software is controlled by the RLM network license server http www reprisesoftware com RLM_Enduser html To run the PolyUMod and MCalibration software it is necessary to have a valid license file and a running license server The license file is typically provided as part of a yearly license agreement The license server can be run on any Windows or Linux computer on the local network Copyright Veryst Engineering 2015 6 License Server The license server can be pp amp D localhost 5054 home as controlled through command line arguments Re
19. file Tension_0_00017_s txt containing 356 rows of data Creating load case Tension_O 00017_s Reading experimental data file Tension_O_00017_s txt v L opt Method Automatic Best NMAD Fitness with Weight Factors 0 JRun Time 00 00 00 Function Evaluations 0 Copyright Veryst Engineering 2015 22 Material Model Select A Material Model Material Models Model Name Supported Solvers a v MCalibration Models v Hyperelastic Models Neo Hookean Eight Chain Eight Chain Compressible Yeoh Mooney Rivlin Gent Ogden Anisotropic Eight Chain Bergstrom Anisotropic Eight Chain Bischoff Hyperfoam Holzapfel Gasser Ogden v Metal Plasticity Models Elastic Plastic lsotropic Hardening v Viscoplasticity Models Bergstrom Boyce Bergstrom Boyce Mullins Anisotropic Bergstrom Boyce Mullins Hybrid Model M8 Arruda Boyce Dual Network Fluoropolymer Three Network Model Micro Foam Model Three Network Foam Model Dynamic Bergstrom Boyce Silberstein Boyce 1 Silberstein Boyce 2 Flow Evolution Networks Parallel Network Model v Abaqus Models Abaqus Linear Elastic Abaqus Hyperelastic Abaqus Hysteresis Abaqus Holzapfel Gasser Ogden Abaqus PRF 2 Yeoh BB Abaqus PRF 3 Yeoh BB Abaqus PRF 4 yeoh BB M AB AN AB P AN AB AN AB P AN P M AB P AN P LS P M AB AN AB P AN M AB AN AB P AN M AB P AN P LS P M AB AN
20. gen Veryst Projects Training_PolyUMod_MCalibration PEEK PEEK_calibrate_TNM_v7 mcal Ea PEEK calibrate _TNM_v7 mcal home jorgen Documents Conference_2014_Simulia Calibration PEEK_calibrate_TNM_v7 mcal calibrate_PRF3 mcal home jorgen Veryst Projects Training_PolyUMod_MCalibration PET_softening calibrate_PRF3 mcal calibrate_TNM mcal home jorgen Veryst Projects Training_PolyUMod_MCalibration PET_softening calibrate_TNM mcal Calibrate J Library This is the MCalibration main windows version 2 6 0 calibration_Abaqus_Hysteresis_Yeoh mcal home jorgen Veryst Projects Training_PolyUMod_MCalibration Neoprene_rubber calibration_Abaqus_Hysteresis_Yeoh mcal calibration_BB mcal 1 1 home jorgen Veryst Projects Training_PolyUMod_MCalibration Neoprene_rubber calibration_BB mcal Before reading In the calibration_TNM mcal home jorgen Documents ExperimentalData_Calibrations HDPE calibration_TNM mcal experimental data let S calibrate_PTFE_TNM mcal home jorgen Documents ExperimentalData_Calibrations _PTFE calibrate_PTFE_TNM mcal examine the different calibrate_BB mcal pa rts of the main home jorgen Veryst Projects Training_Class_2014_Nr4_Intro Exercises BB 1 calibrate_BB mcal calibrate_EC Bischoff mcal window home jorgen Veryst Projects Training_Class_2014_Nr4_Intro Exercises Hyp 3_Ani_Hyper calibrate_EC Bischoff mcal Open Clear List Jopt Method Automatic Best NMAD Fitness with Weight Factors 0 JRun
21. ibration File Edit Load Cases Material Model Simulation View Help OG a H e gt gt O E Quit Open MCal File Save MCal File Import Material Model Run Once Run Calibration Pause Calibration Stop Calibration Parametric Study Export Model Save Predictions Experimental Tests Load Cases Graph Window z Fit Load Case Name MCalibration W Al 6 06 L Tension_0_017_s Tension_0_017_s experimental imine Untied i theta Hei a cae Tension_0_017_s prediction ambaa 507374 a sa e 75 ON a A E i a True Stress MPa wi S c 3 J Library DA NMAD Fitness 4 99 Set Material Model Three Network Model 015 e Name Value _ ower Bount pper Bouni Optimize True Strain 2 muA 59 4560 0 vil Output Comments 2 thetaHat 0 p Runtime Output Comments Optimization Progress 3 lambdaL 5 09397 i 10 Vv 3 ae a PPa u 746 957 z Nelder Mead Simplex Optimization 5 tauHatA 2 57521 0 v 5 aaa is RA manually stopped the calibration after about 2 minutes wt ze i 3 a7 At this point the material model agrees well with the Ea o 0 n B experimental data opt Method Automatic Best NMAD Fitness with Weight Factors 4 98645 JRun Time 00 02 35 Function Evaluations 203 Copyright Veryst Engineering 2015 28 Virtual Stress Relaxation File Edit
22. ile Tension_0_017_s txt opt Method Automatic Best NMAD Fitness with Weight Factors 0 Run Time 00 00 00 Function Evaluations 0 Copyright Veryst Engineering 2015 20 Experimental Data N TPE remove the previous data file from the window Load Case Type Experimental Data time a e z Load Case Name Tension_0_0001 7_s Experimental Data Loading Mode Time Stepping Plot Styles Fitness Weights Miscellaneous 2 Click on Load Data File to Select Experimental Data File 0 5 read in the file Name of Experimental Data File ion_Introduction Tension_0_00017_s txt experimental data Tens ion 00017 s txt The experimental file contains 356 rows and 3 columns Rename File Control Strain Control 3 As before set the column a a a R names to Time Engineering Strain and Engineering Stress v Time data available Time Column 1 Strain Column 2 lal Strain Type Engineering Strain Transverse strain data available Column 4 4 Save the column information by clicking the Save Data File button v Stress data available Column 2 Stress Column 3 Stress Type Engineering Stress v Fixed Temperature Temperature Kelvin 293 5 Click on Create Load Case to start creating the load case nO O 5 Once the load case dialog eee es comes up accept the d
23. l Rights Reserved http www goahead com goahead WEBSERVER License Server e One easy way to check if the software has been installed properly is to try to start MCalibration If it Starts without problems then the license server works e Run the test cases in opt PolyUMod Abaqus_test_cases opt PolyUMod ANSYS_test_cases or C Program Files PolyUMod Abaqus_ test cases C Program Files PolyUMod ANSYS_test_cases to test if the PolyUMod library has been installed properly Copyright Veryst Engineering 2015 8 PolyUMod Material Models Linear elastic LE Neo Hookean NH Eight chain EC Bergstrom Boyce BB Bergstrom Boyce with Ogden Roxburgh Mullins effect BBM Anisotropic Bergstrom Boyce with Ogden Roxburgh Mullins effect ABBM Hybrid model HM Multinetwork model M8 Arruda Boyce viscoplasticity model AB Dual Network Fluoropolymer DNF model 11 Three Network Model TNM 12 Anisotropic eight chain model AEC 13 Micromechanical Foam Model MFM 14 Parallel network model PNM 15 Three Network Foam Model TNFM 16 Dynamic Bergstrom Boyce model DBB kaa A 17 Silberstein Boyce 1 SB1 18 Silberstein Boyce 2 SB2 19 Flow Element Networks FEN model 99 Multi Temperature model O CON DW HBWDN FR m O Copyright Veryst Engineering 2015 9 PolyUMod Material Parameters Line 1 A We ee er Line 2 All PolyUMod material models use an initial 16 g
24. lobal parameters and then the actual material parameters for the selected material model e The PolyUMod User s Manual contains the details e Read Chapter 3 in the User s Manual Copyright Veryst Engineering 2015 10 PolyUMod Hints For most problems pick one of the material models highlighted in blue on Slide 9 e Always activate non linear geometry in the FE program Allow the FE program to use additional attempts per iteration before cutting time Some problems benefit from using a numerical Jacobian JAC 3 instead of the default closed form approximation e When using plane stress or membrane elements you may need to set the global parameter TWOD S For anisotropic materials you may need to set the global parameter ORIENT Copyright Veryst Engineering 2015 11 McCalibration Workflow The following tutorial shows how a set of experimental data can be read into MCalibration and then used to calibrate a material model It is shown how the behavior of the calibrated material model can be examined using virtual experiments It is also shown how the material model can be exported to a finite element program Copyright Veryst Engineering 2015 Experimental Data f Tension_0_017_s ttt 0 0 0 2 9 78343195266 0 0016534 0 43281 3 19 7625248521 0 0033398667 0 76299 4 29 736883432 0 0050255333 1 04102 5S 39 7203153846 0 0067127333 1 32088 49 7017751479 0 0083996 1 56923 7 59 6856017751 N
25. prise or using a web interface aes at RLM Administration http localhost 5054 Commands Choose a command where localhost is the from the list below Reprise License Server Administration Copyright c 2006 2014 Reprise Software Inc All Rights Reserved RLM License Server Administration v11 0 This web interface is an integral part of the rim server If rim is started without any parameters the web interface runs on port 5054 rim can also be started with the nows option to disable this web interface rim can be started with the ws port option to specify another port number This tool allows you to perform status and administration functions on the RLM server Choose a command from the list on the left hand side of the window name of the license Status S e rve r Reread Restart Servers Switch Reportlog New Reportlog Switch Debuglog Edit License Files RLM Manual System Info About Copyright Veryst Engineering 2015 7 Reprise Software Inc 1530 Meridian Ave Suite 290 San Jose CA 95125 www reprisesoftware com inf eprisesoftware com RLM contains software developed by the OpenSSL Project for use in the OpenSSL Toolkit http www openssl org Copyright c 1998 2008 The OpenSSL Project All rights reserved Copyright c 1995 1998 Eric Young eay cryptsoft com All rights reserved Webserver Copyright c 2006 2014 GoAhead Software Inc Al
26. r es Back in the main window click the Run Once 3 lambdat 5 09397 1 10 m3 neme otet button to evaluate the new load virtual a kappa 746 957 0 penelope experiment 5 tauHatA 2 57521 0 v5 Pil a ares vax wa tit We see that the predicted relaxes about 30 in Z ma 7ess02 12 2 W7 simulation dof 60 Seconds n a a rE p The next step is to export the calibrated model to Opt Method Automatic Best NMAD Fitness a FE program Click the Export Parameters button Copyright Veryst Engineering 2015 35 Export Material Model a7 Export Material Parameters Export Parameter Format To export the material model to Abaqus CAE select Abaqus CAE script and click Save e Abaqus inp file PolyUMod paqus LAc Macro DuUIIT IN Materia To export the material model to ANSYS select ANSYS APDL format and click Save Abaqus CAE macro PolyUMod Abaqgus CAE ateria Abaqus CAE script PolyUMod ANSYS PolyUMod APDL dat format LS DYNA PolyUMod PolyUMod External File Units gt gt gt Save Cancel Copyright Veryst Engineering 2015 36 Import Model Into Abaqus CAE Directory GT MEGA e Ew wee In CAE select Run Script from the a File Menu then select the script simulation_material_script py file that was created by McCalibration File Name simulation_material_script py File Filter Python Script py M 34 Mod
27. sted Here we will perform a virtual uniaxial compression experiment to an engineering strain of 0 1 followed by 60 seconds of relaxation Click on button to setup the virtual experiment opt Method Automatic Best NMAD Fitness with Weight Factors 4 98645 JRun Time 00 02 35 Function Evaluations 203 29 Virtual Stress Relaxation B Load Case Setup Load Case Type Virtual Experi egments X Load Case Name Segments Experimental Data Loading Mode 1 Plot Styles Fitness Weight Miscellaneous 1 Select Virtual Experiment Segments from the load case type drop down list 2 Click Add Segments add TE Remove Segment Edit Segment Move Segment Up Move Segment Down Copyright Veryst Engineering 2015 30 Virtual Stress Relaxation iB specify Segment Properties Control Specify the target strain rate and Run Engineering Strain Rate Value 0 01 strain value This specifies the stress relaxation pre load Target Then click the Save button Until Engineering Strain Value 0 1 Use a second target condition stop if either condition is true cl eering rain jreater Thar r cqua Temperature i a Start Temperature 293 00 End Temperature 293 00 Time Stepping e Specify the minimum number of time increments 100 Manually specify the time increment sizes Cancel Copyright Veryst Engineering 2015 31 Virtu
28. us S Segment 1 eng strain rate 0 01 until eng strain 0 1 ksa Segment 2 eng strain rate 0 until segment time 60 The virtual experiment is now done 1 Give the load case a name 2 Click the Save button Add Segment Remove Segment Edit Segment Move Segment Up Move Segment Down Copyright Veryst Engineering 2015 34 Virtual Stress Relaxation File Edit Load Cases Material Model Simulation View Help amp H ina zA Ea a A E Quit Open MCal File Save MCal File Import Material Model Run Once Run Calibration Pause Calibration Stop Calibration Parametric Study Export Model Save Predictions Experimental Tests Load Cases Graph Window S Fit Load Case Name MCalibration M A 6 02 L Tension_0_017_s Tension_0_017_s experimental EEEN h to 7 Tension_0_017_s prediction mmbda i 508398 Tutorials 3 95 I Tension_0_00017_s Tension 0 D0017 predican gt aoe A Virtual Relaxation prediction muse 13 1358 betas 11 0937 itm uHate6 53874 meias All mucea 3614 iqr0 aipha 0 i theta0 293 True Stress MPa 4 E E F Z Q o gt x NMAD Fitness 3 32 Set Material Model Three Network Model rT Name Value ower Bouni Ipper Boun Optimize a True Strain 1 mua 59 4560 0 ipl TP p N Fe
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