Development of Automatic Stress Correction System for Triaxial Stress State after Necking Initiation in True Stress-True Strain Curves and Application to Polycarbonate

Abstract

We have developed a stress correction method from multiaxial to uniaxial stress state of flow stress in the stress-strain relationship required for numerical simulation. Using this, we calculated the true stress-true strain curves of ferrous metals and aluminum alloys over the entire strain range, and verified them by several methods. Since the devised correction method requires repeated tension simulations and data processing until convergence, an automated system using Alteryx was developed with the aim of improving efficiency and convenience. In this report, we used this system to re-verify ferrous metals and aluminum alloys, and also tried to apply it to polycarbonate.