Numerical Simulation of Systems of Shear Bands in Ductile Metal with Inclusions

[摘要] These are slides for a presentation on numerical simulation of systems of shear bands in ductile metal with inclusions, performed at Los Alamos National Laboratory. The conclusions are the following: A shear band is much thinner (0.1 ??m) than the spacing between inclusions (100??m). Therefore fully resolved simulation is not feasible; asymptotic analysis allows modeling of a shear band as a velocity discontinuity within a moderately sized cell; formation criterion (critical strain) is determined by rate-dependent viscoplastic flow rule; inclusions cause shear bands to form at smaller strain; under expansion, shear bands form at the same strain than under compression; this can be applied to crystal plasticity.

[发布日期] 2016-08-11

[学科分类] 凝聚态物理

[关键词] Mathematics;Material Science