期刊论文

High-speed impact deformation mechanism of magnesium alloy based on twin strengthening Johnson-Cook constitutive macro-meso simulation model

中文

中国有色金属学报

1004-0609

2023

33

11

3650-3661

10.11817/j.ysxb.1004.0609.2023-44152

国家自然科学基金资助项目(52071139,52105334) 湖南省自然科学基金资助项目(2023JJ30262,2023JJ30252) 宁波市自然科学基金资助项目(202003N4083) 湖南省教育厅优秀青年资助项目(21B0471)。

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基于孪晶强化Johnson-Cook本构(J-C本构)构建有限元(Finite element method,FEM)耦合黏塑性自洽模型(Visco-plastic self-consistent model,VPSC)...展开更多 基于孪晶强化Johnson-Cook本构(J-C本构)构建有限元(Finite element method,FEM)耦合黏塑性自洽模型(Visco-plastic self-consistent model,VPSC)宏细观仿真模型,研究预孪晶AZ31镁合金高速冲击过程的力学响应、变形机制和织构演变。结果表明:基于孪晶强化的J-C本构构建的宏细观仿真模型更能准确地预测高速冲击过程中次要变形机制及织构组分;引入孪晶强化的J-C本构不会对主要变形机制产生影响,主要影响次要变形机制;在次要变形机制中,棱柱...

Based on the twin strengthening Johnson-Cook constitutive(J-C constitutive),the finite element method(FEM)coupled visco-plastic self-consistent model(VPSC)macro-meso simulation model was constructed to study the mechanical response,deformation mechanism,and texture evol...MORE Based on the twin strengthening Johnson-Cook constitutive(J-C constitutive),the finite element method(FEM)coupled visco-plastic self-consistent model(VPSC)macro-meso simulation model was constructed to study the mechanical response,deformation mechanism,and texture evolut...