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Hi all, From the manual of /mat/law38, the curves are always nominal stresses versus engineering strains. However, from the manual of /prop/solid, It is recommended to use IHKT = 2 with HEPH and Lagrange type total strain, Ismstr = 10 for foam or rubber materials like laws 38, 42, 69, and 82. I think Ismstr=10 is not small strain formulation, so true stress vs true strain curve should be used. This two comments seem incompatible. How to do this? How to model package foam with LAW38? Thank you Roy
Roy Duan posted a topic in RADIOSSHi all, Which material model should be used for a package foam when doing package dropping simulation? From the help manual, both /mat/law38 and /mat/law70 are visco-elastic Foam Tabulated material. What's the difference between this two models? Is there any example about package dropping simulation? Best Wishes Roy