Modeling of large-strain cyclic plasticity including description of anisotropy evolution for sheet metals

Fusahito Yoshida, Takeshi Uemori, Hiroshi Hamasaki

Research output: Contribution to journalArticle

Abstract

The present paper describes a framework for the constitutive modeling of a large-strain cyclic plasticity to describe the evolution of anisotropy and the Bauschinger effect of sheet metals that is based on the Yoshida-Uemori kinematic hardening model. In the model, the shapes of the yield and the bounding surfaces are assumed to change simultaneously with increasing plastic strain. An anisotropic yield function that varies continuously with the plastic strain is defined by a nonlinear interpolation function of the effective plastic strain using a limited number of yield functions determined at a few discrete points of plastic strain. With this modeling framework, any type of yield function can be used and the convexity of the yield surface is always guaranteed. A set of kinematic parameters can be identified experimentally independent of the anisotropic parameters.

Original languageEnglish
Pages (from-to)571-585
Number of pages15
JournalAdvanced Structured Materials
Volume64
DOIs
Publication statusPublished - Jun 6 2015

Keywords

  • Anisotropy evolution
  • Constitutive model
  • Cyclic plasticity
  • Sheet metal
  • Yoshida-Uemori model

ASJC Scopus subject areas

  • Materials Science(all)

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