COMPREHENSIVE CHARACTERIZATION AND MODELING OF PLANAR ANISOTROPY IN STAINLESS STEEL SUS 304 FOR ACCURATE EARING PROFILE PREDICTION IN CIRCULAR CUP DRAWING PROCESSES

Abstract

The deep drawing process of stainless steel SUS 304 plays a crucial role in the production of cover and package cases. The inherent anisotropy of the material significantly impacts the profile of the deformed part, posing challenges to manufacturing procedures. This research provides a comprehensive investigation of the planar anisotropy in stainless steel SUS 304. Constitutive modeling approaches, employing both associated and non-associated flow rules, using quadratic functions have been applied in the simulation process. These developed material models have been subsequently applied to simulate a cup drawing process, aiming to predict the earing profile of the deformed part. Experimental tests have been conducted to validate the accuracy of the numerical models. Comparative analysis revealed that, when calibrated with stress-based parameters, the prediction accuracy of the associated model surpasses that of alternative models. This study offers a reliable predictive tool for earing profile outcomes in circular cup drawing processes for stainless steel SUS 304.