Constraint and size effects in confined layer plasticity
Constraint and size effects in confined layer plasticity
复制标题
约束层塑性中的约束和尺寸效应
DOI:
10.1016/j.jmps.2021.104328
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发表时间:
2021
影响因子:
5.3
通讯作者:
Alan Needleman
中科院分区:
文献类型:
--
作者:
Mitsutoshi Kuroda;Viggo Tvergaard;Alan Needleman
Plane strain finite element analyses are used to model the experiments of Mu et al. (2014, 2016) for a thin metal layer confined between elastic solids. The thin metal layer undergoes elastic–plastic deformations, here modeled by strain gradient plasticity, while the rest of the solid deforms only elastically. Plane strain is assumed and finite strains are accounted for. The microscopic boundary condition at the band interface is initially taken to be zero plastic strain increment, but plastic straining at the interface is allowed when the plastic strain gradient at the interface has exceeded a critical value. When the narrow metal band is inclined 45° relative to the direction of compression of the solid, simple shear develops in the band and predictions are rather similar to those of a one-dimensional analysis for an infinite band. For a band at 90° the elastic parts give significant constraint on plastic flow, the stress fields are non-uniform along the band and the average nominal compressive stress shows strong sensitivity to the layer thickness and to the width of the specimen. Remarkably good qualitative, and in some cases quantitative, agreement is found with the experimental observations of Mu et al. (2014, 2016). Considering also other band angles, both the average nominal shear and compressive stress show variations with the angle.
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DOI:
10.1115/1.4002210
发表时间:
2011
期刊:
Journal of Applied Mechanics
影响因子:
--
作者:
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通讯作者:
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DOI:
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发表时间:
2019
期刊:
European Journal of Mechanics - A/Solids
影响因子:
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作者:
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通讯作者:
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DOI:
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发表时间:
2016
期刊:
影响因子:
--
作者:
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通讯作者:
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DOI:
10.1016/s0022-5096(00)00080-6
发表时间:
2001-06-01
影响因子:
5.3
作者:
Kuroda, M;Tvergaard, V
通讯作者:
Tvergaard, V
DOI:
10.1007/s10704-015-0055-9
发表时间:
2015
期刊:
International Journal of Farcture
影响因子:
--
作者:
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通讯作者:
Mitsutoshi Kuroda