Hi I am trying to enter multi linear isotropic hardening data in a model. I see yellow mark for the first value as shown in snap. Why is this occurring?
To my knowledge, the first point of the curve must be the yield point, that is, zero plastic strain and yield stress (i.e. plastic strain=0, stress=260 Mpa).
ANSYS treat the linear elastic and plastic regime "separately". You can't define the whole stress-strain curve in non of the plasticity approatche.s For that reason if you want to define a multilinear kinematic hardening plasticity the first point has to be zero strain and stress corresponds to Yield strength.