Characterization of macroscopic tensile strength of polycrystalline metals with two-scale finite element analysis

Ikumu Watanabe, Kenjiro Terada, Eduardo Alberto de Souza Neto, Djordje Perić

研究成果: Article査読

30 被引用数 (Scopus)

抄録

The objective of this contribution is to develop an elastic-plastic-damage constitutive model for crystal grain and to incorporate it with two-scale finite element analyses based on mathematical homogenization method, in order to characterize the macroscopic tensile strength of polycrystalline metals. More specifically, the constitutive model for single crystal is obtained by combining hyperelasticity, a rate-independent single crystal plasticity and a continuum damage model. The evolution equations, stress update algorithm and consistent tangent are derived within the framework of standard elastoplasticity at finite strain. By employing two-scale finite element analysis, the ductile behaviour of polycrystalline metals and corresponding tensile strength are evaluated. The importance of finite element formulation is examined by comparing performance of several finite elements and their convergence behaviour is assessed with mesh refinement. Finally, the grain size effect on yield and tensile strength is analysed in order to illustrate the versatility of the proposed two-scale model.

本文言語English
ページ(範囲)1105-1125
ページ数21
ジャーナルJournal of the Mechanics and Physics of Solids
56
3
DOI
出版ステータスPublished - 2008 3 1

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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