A new strain hardening model for rate-dependent crystal plasticity

作者：Brahme Abhijit P; Inal Kaan^*; Mishra Raja K; Saimoto Shigeo

来源：Computational Materials Science, 2011, 50(10): 2898-2908.

DOI：10.1016/j.commatsci.2011.05.006

• Crystal plasticity
• Finite element analysis
• Strain hardening models
• Localized deformation

This paper presents a crystal plasticity based finite element analysis employing the new microstructure-based strain hardening model recently presented by Saimoto and Van Houtte (2011) [7] to simulate form-ability and texture evolution in the commercial aluminum alloy 5754. Simulations are performed to compare the predictive capability of the new hardening model against the common work hardening models using a rate-dependent plasticity formulation. The parameters in the numerical models are calibrated using the X-ray data published by Iadicola et al. (2008) [9] for the aluminum sheet alloy 5754. The predictions of the model for balanced biaxial tension and in-plane plane-strain tests are compared against experimental observations presented in Iadicola et al. (2008) [9]. It is concluded that the new model provides the best predictions of the large strain behavior of Aluminum sheet alloy 5754 subjected to various strain paths.

• 出版日期2011-9