Recent content by lambertlai

The 1st figure is a plastic strain vs true stress as a input, is it right? if true stress vs strain and lab test strain stress the max. stress is different right?

I try many time to model a simple tensile test for steel MAT_024 but the graph doesn't match from Dyna result and Test result. Process: 1. Collect data Tensile strain and stress convert to True stress and strain use formula True stress: eng. stress*(1+eng. strain). True strain= ln(1+eng. strain)...