Simulation of polycrystalline aluminum tensile test with crystal plasticity finite element method

摘要：

The crystal plasticity was implemented in the finite element method(FEM) software ABAQUS through the user subroutine UMAT.By means of discretizing the space at the grain level with the Voronoi diagram method,a polycrystal model was built and used in the FEM analysis.The initial orientation of each grain was generated based on the orientation distribution function(ODF).The developed model was successfully applied in simulation of polycrystalline aluminium samples deformed by the tensile tests.The theoretical strain—stress relation was in good agreement with the experimental result.The simulation results show that the grain size has significant effect on the deformation behavior.The initial plastic deformation usually occurs at grain boundaries,and multiple slip often results in an enhanced local hardening at grain boundaries.

关键词： crystal plasticity finite element method polycrystal modeling Voronoi diagram texture face-centered cubic crystal

作者: SI Liang-ying Lü Cheng K.Tieu LIU Xiang-hua

作者单位: State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110004,China;School School of Mechanical,Materials and Mechatronic Engineering,University of Wollongong,Northfields Aven State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110004,China

会议类型: 国际会议

会议名称: 2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)

会议地点: 长沙

会议语种:英文

在线出版日期: 2007-11-28（万方平台首次上网日期，不代表论文的发表时间）