AWG ERIF Test Case 15: *MAT_224_GYS / *MAT_TABULATED_JOHNSON_COOK_GYS
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| Description: | This test case contains three sets of models each with subcases for evaluating and comparing various features in *MAT_224 and *MAT_224_GYS. Set 1 compares the compressive and shear yield stress as a function of plastic strain (IFLAG=0) and as a function of effective plastic strain (IFLAG=1) for the five load conditions bi-axial tension, uni-axial tension, pure shear, uni-axial compression, and bi-axial compression. Set 2 compares the four loading patterns step-down, step-up, confined tension, and uniaxial tension for two different fractions of plastic work converted into heat (BETA equal and not equal to 1). Set 3 contains seven verification test cases for different yield ratios (compressive yield/tensile yield). The purpose of this test case is to verify that *MAT_224_GYS and *MAT_224 give the same results for symmetric materials (tensile yield=compressive yield). |
| Status: | Accepted and currently part of the AWG Test Suite. |
| Classification: | Verification test case |
| Input Deck: | Test Case 15 Input |
| Keywords: | *MAT_224 |
| *MAT_224_GYS | |
| Units: | mm (length), ms (time), kg (mass), kN (force), GPa (stress), degrees K (temperature) |
| Model Data: | Set 1: 80 nodes / 10 solid elements / 2 material models / 10 parts |
| Set 2: 128 nodes / 16 solid elements / 2 material models / 16 parts | |
| Set 3: 80 nodes / 10 solid elements / 2 material models / 10 parts | |
| Run Time: | approx. total CPU time = x seconds (Intel® Xeon® CPU E7- 8837 @ 2.67GHz / MPP / 1 cpu's) |
| Earliest Version: | LS-DYNA® R10.0 |
| Test Case Details and Results: | Test Case 15, Documentation and Results for LS-DYNA R14.1-7-gea5f83301c |
| Test Case 15, Documentation and Results for LS-DYNA R12.2 Revision 1-g2dd504fe3d | |
| Test Case 15, Documentation and Results for LS-DYNA R14.0 Revision 461-gee93a457ac | |
| Test Case 15, Documentation and Results for LS-DYNA R13.1 Revision 93-g6e31b592d7 | |
| Test Case 15, Documentation and Results for LS-DYNA R13.0 Revision 365-gf8a97bda2a | |
| Test Case 15, Documentation and Results for LS-DYNA R12.1 Revision 128-g57c3366e82 | |
| Test Case 15, Documentation and Results for LS-DYNA R12.0 Revision 148708 | |
| Test Case 15, Documentation and Results for LS-DYNA R11.2 Revision 51-g7e1aee4 | |
| Test Case 15, Documentation and Results for LS-DYNA R11.1 Revision 139325 | |
| Test Case 15, Documentation and Results for LS-DYNA R10.2 Revision 134743 | |
| Test Case 15, Documentation and Results for LS-DYNA R11.0 Revision 132327 | |
| Test Case 15, Documentation and Results for LS-DYNA R11.0 Revision 130010 | |
| Test Case 15, Documentation and Results for LS-DYNA R9.3 Revision 126955 | |
| Test Case 15, Documentation and Results for LS-DYNA R10.1 Revision 123136 | |
| Test Case 15, Documentation and Results for LS-DYNA R9.2 Revision 118235 | |
| Test Case 15, Documentation and Results for LS-DYNA R10.0 Revision 116539 | |
| Bug Issues Found and Fixed: | Bug 15061: Errors in stress output for the elements in elout file after failure occurred in R11.0 Revision 130010. Fixed in R11 Revision 132051 and trunk Revision 132050. |
| Use IFLAG=1 rather than the default IFLAG=0 in the *MAT_224_GYS input to resolve material law convergence issues. | |
| The computation of the failure function F (history variable 12) was not correct. Sometimes, elastic integration points had a non-zero plastic strain increment for the update of F. This has been fixed starting with LS-DYNA Dev-123399, R10-123400, and R9-123401. | |
last modified on Monday April 24, 2023 14:03:11 PDT