Study on Fracture Behavior of Steel Strip under Cold Rolling Forming Process Based on GTN Damage Model

Jian Jun Chen; Yu Xi Yan; Quan Sun; Hong Liang Pan

doi:10.4028/www.scientific.net/AMR.779-780.126

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Study on Fracture Behavior of Steel Strip under Cold Rolling Forming Process Based on GTN Damage Model

Abstract:

In this paper the behavior of crack propagation of the strip steel is investigated by using the Gurson-Tvergaard-Needleman (GTN) damage model. The damage parameters used in the damage model are determined by tension experiments and SEM observation. With the aid of finite element method the influences of rolling ruduction and tension on crack propagation are systematically analyzed. The numerical results show that the GTN damage model is available to prediction the initiation and propagation of edge cracks during rolling forming process and the simulation results agrees well with the experimental results.