Reply To: Bilinear kinematic hardening in LS-D

[javat33489]

I wanted to say that for the calculation I only have the yield strength, tensile strength, Young's modulus, Poisson's ratio, melting temperature and that's it. And to solve the problem of inserting a tooth into a steel plate, I have to use bilinear kinematic hardening in ls dyna, it takes into account only the yield strength. I could solve the problem in a static formulation and use multilinear kinematic hardening there, but the calculation will take a very long time. In addition, for such a task, a very fine mesh of 0.1-0.3 mm is needed. Therefore, I solve the problem in Ls Dyna. My question is that I want to know from you professionals how accurate is the solution using bilinear kinematic hardening in setting such a problem as inserting a tooth into a steel plate and similar problems. You have a lot of experience in calculations, can you say? I made some tests: ls-dyna + bilinear kinematic hardening st structural + multilinear kinematic hardening with the same mesh and loads. ls-dyna showed a margin of safety of 1.01 st structural showed a margin of safety of 0.7 Now I want to figure out which is more accurate. I would like to solve such a problem in LS-Dyna, because there is a fast solver.