Affiliation:
1. Hiroshima University
2. Yuge National College of Maritime Technology
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.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
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