UNIAXIAL AND MULTIAXLAL RATCHETTING OF SiCP/6061AI COMPOSITES: CONSTITUTIVE MODELING AND FINITE ELEMENT SIMULATION

摘要：

Based on the Eshelby equivalent inclusion theory and Mori-Tanaka (MT) averaging method,a meso-mechanical cyclic elasto-plastic constitutive model used for the simulation of uniaxial and multiaxial ratchetting of particle-reinforced metal matrix composites was proposed.The uniaxial and multiaxial rachetting behaviours of SiCp/6061 Al composites are predicted by the proposed model.Then the simulations by the model are compared with those by the finite element analysis with the help of the representative volume element (RVE) of the composites.It is shown that: the proposed meso-mechanical constitutive model can describe the multiaxial ratchetting of the SiCP/6061Al composites reasonably;while the predicted ratchetting by the meso-mechanical model is fairly weaker than that by the finite element method due to the different choices of homogenization methods.

关键词： metal matrix composites rachetting constitutive model finite element method

作者: S.J.Guo G.Z.Kang J.Zhang

作者单位: School of Mechanics and Engineering,Southwest Jiaotong University,Chengdu 610031,China

会议类型: 国际会议

会议名称: The Third International Conference on Heterogeneous Material Mechanics(第三届国际非均匀材料力学会议)

会议地点: 上海

会议语种:英文

页码: 746-753

在线出版日期: 2011-05-22（万方平台首次上网日期，不代表论文的发表时间）