Research of the Gurson damage model of the different yield functions during the deep-drawing process

Abstract

Based on the macroscopic constitutive models (MCCM), the Gurson damage model is introduced to build the mesoscopic constitutive models (MSCM) with anisotropy Gurson-Hill1948 and Gurson-Yld2003 damage models. The damage parameters of the Gurson-Hill1948 and Gurson-Yld2003 damage models using orthogonal analysis and inverse computed methods are discussed and compared with experimental and simulation results obtained using the user subroutine VUMAT implemented by Lin. The corresponding sensitivity of the damage parameters was obtained by orthogonal analysis, then these optimized damage parameters could describe the mechanical performance for 08Al sheet with 1 mm thickness. Basically, the simulation results are in accordance with the experiment results. The damage parameters of the Gurson-Hill1948 and Gurson-Yld2003 constitutive models are explored to describe the deep-drawing deforming process, failure performance and obtained equivalent stress, equivalent plastic strain, thickness, damage distribution, and the influence of the friction coefficient during the deep-drawing process.