文章基本信息

标题：Micromechanics-based constitutive relations for post-localization analysis
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作者：Mohammad E. Torki ; A. Amine Benzerga
期刊名称：MethodsX
印刷版ISSN：2215-0161
电子版ISSN：2215-0161
出版年度：2018
卷号：5
页码：1431-1439
DOI：10.1016/j.mex.2018.10.018
语种：English
出版社：Elsevier
摘要：Graphical abstractDisplay OmittedAbstractMicromechanics-based constitutive relations for post-localization analysis are obtained, to be used in a multi-surface representation of porous metal plasticity. Each yield surface involves a number of internal parameters. Hence, the constitutive relations must be closed with evolution equations for the internal parameters. The latter are essential to describing the gradual loss of load-bearing capacity under shear-dominated loading. We also briefly discuss potential void closure due to void rotation and elongation in shear and show additional details regarding the simulations reported in a recent paper (A mechanism of failure in shear bands (2018) Extreme Mechanics Letters,23, pp. 67-71.) The method can be more broadly used in a range of ductile failure problems involving combined tension and shear loadings.
关键词：Ductility;Void growth;Void coalescence;Lode angle;Triaxiality