Plastic deformation behavior of high strength steel sheet under non-proportional loading and its modeling

Takeshi Uemori, T. Kuramitsu, R. Hino, T. Naka, F. Yoshida

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Abstract

This paper deals with experimental observations and modeling of plastic deformations of a high strength steel sheet (HSS sheet) under biaxial stress conditions. Using a cruciform specimen of a HSS sheet of 980MPa-TS, experiments of proportional and non-proportional loadings were performed. Numerical simulations for the biaxial stress-strain responses were conducted using a constitutive model of large-strain cyclic plasticity (Yoshida-Uemori model), and the results were compared to the experimental data. The results of numerical simulation show a good agreement with the experimental results, which is attributed to accurate modeling of the backstress evolution of the anisotropic yield surface.

Original languageEnglish
Pages (from-to)895-900
Number of pages6
JournalKey Engineering Materials
Volume340-341 II
Publication statusPublished - 2007
Externally publishedYes

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Keywords

  • Constitutive model
  • High tensile strength steel sheet
  • Kinematic hardening model
  • Non-proportional loading
  • Yield function

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemical Engineering (miscellaneous)

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