Crack bifurcations in a strained lattice

被引：15

作者：

Astrom, J

Timonen, J

机构：

[1] Department of Physics, University of Jyväskylä, FIN-40351 Jyväskylä

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.54.R9585

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Dynamic crack propagation in a strained, granular, and brittle material is investigated by modeling the material as a lattice network of elastic beams. By tuning the strain and the ratio of axial to bending stiffness of the beams, a crack propagates either straight, or it branches, or it bifurcates. The crack tip velocity is calculated approximately for cracks that propagate straight. In a bifurcated crack the number of broken beams follows a scaling, law. The shape of the branches is found to be the same as in recent experiments.

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页码：R9585 / R9588

页数：4

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