作者
N Souto, A Andrade-Campos, S Thuillier
发表日期
2017/6
期刊
International Journal of Material Forming
卷号
10
页码范围
353-367
出版商
Springer Paris
简介
The main goal of this work is to design virtually a heterogeneous test, with appropriate specimen shape and boundary conditions, which leads to an inhomogeneous strain field promoting the mechanical behavior characterization of thin metallic sheets under several strain paths and strain amplitudes. Finite element simulations were carried out with a virtual material, described by an anisotropic yield criterion (Yld2004-18p) associated to a mixed hardening law. The material parameters were derived from a large experimental database of quasi-homogeneous classical tests. A shape and boundary conditions optimization process was developed based on a quantitative indicator rating the strain field information and used as a cost function for guiding the test design. A heterogeneous test showing a butterfly shape was obtained, with strain states ranging from simple shear to plane strain tension. In addition, the …
引用总数
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学术搜索中的文章
N Souto, A Andrade-Campos, S Thuillier - International Journal of Material Forming, 2017