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Mesoscale modeling of grain boundary migration under stress using coupled finite element and meshfree methods.

机译：应力耦合有限元和无网格法在中尺度下的晶界迁移模拟。

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摘要

The process of grain boundary migration involves moving interfaces and topological changes of grain boundary geometry. This can not be effectively modeled by Lagrangian, Eulerian, or arbitrary Lagrangian Eulerian finite element formulation when stress effect is considered. A coupled finite element and meshfree approach is proposed for modeling of grain boundary migration under stress. In this formulation, the material grid carries material kinematic and kinetic variables, whereas the grain boundary grid carries grain boundary kinematic variables. The material domain is discretized by a reproducing kernel partition of unity with built-in strain discontinuity across the grain boundaries. The grain boundaries, on the other hand, are discretized by the standard finite elements. This approach allows an arbitrary evolution of grain boundaries without continuous remeshing.

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作者
Chen, J. -S.; Lu, H.; Moldovan, D.;
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年度 2002
页码 1-8
总页数 8
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Grain boundaries; Mass transfer; Interfaces;

机译：晶界;传质;界面;

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Mesoscale modeling of grain boundary migration under stress using coupled finite element and meshfree methods.

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