Branching mechanism of intergranular crack propagation in three dimensions

被引：9

作者：

Itakura, M

Kaburaki, H

Arakawa, C

机构：

[1] Japan Atom Energy Res Inst, Ctr Promot Computat Sci & Engn, Taito Ku, Tokyo 1100015, Japan

[2] Univ Tokyo, Interfac Initiat Informat Studies, Bunkyo Ku, Tokyo 113, Japan

来源：

PHYSICAL REVIEW E | 2005年 / 71卷 / 05期

关键词：

D O I：

10.1103/PhysRevE.71.055102

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We investigate the process of slow intergranular crack propagation by the finite element method model and show that branching is induced by partial arresting of a crack front owing to the geometrical randomness of grain boundaries. A possible scenario for the branching instability of crack propagation in a disordered continuous medium is also discussed.

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页数：4

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