Implementation of a Shear Modified GTN Damage Model and its Application in Cold Rolling

Abstract:

To characterize the degradation of material at low triaxiality, the shear modified GTN damage model proposed by Nahshon and Hutchinson (2008) was introduced in this study. The details of the numericalimplementation and validation of the model was conducted. And the shear modified parameter was determined by the comparisons of experimental and simulation results of the shear test. Then, the damage model was employed to simulate the cold rolling process, and the results showed that the shear modified GTN model can reveal the damage behavior and predict edge crackingof ductile materials in cold rolling.

• Periodical: Advanced Materials Research (Volume 815)
• Pages: 758-764
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.815.758
• Online since: October 2013
• Authors: Quan Sun, Yu Xi Yan, Jian Jun Chen, Xiao Xue Li, Hong Liang Pan
• Keywords: Cold Rolling, Edge Crack, GTN Model, Numerical Algorithm, Shear Deformation

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