Dynamic instabilities in fracture

被引：37

作者：

Ching, ESC

Langer, JS

Nakanishi, H

机构：

[1] UNIV CALIF SANTA BARBARA,INST THEORET PHYS,SANTA BARBARA,CA 93106

[2] KYUSHU UNIV 33,DEPT PHYS,FUKUOKA 81281,JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.76.1087

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We find that moving cracks are strongly unstable against deflection in essentially all conventional cohesive-zone models of fracture dynamics. This instability is governed by detailed mechanisms of deformation and decohesion at crack tips; it cannot be detected by quasistatic far-field theories that consider only energy balance and neglect relevant dynamic degrees of freedom. Our picture of intrinsic instability is consistent with a wide range of experimental observations.

引用

页码：1087 / 1090

页数：4

共 13 条

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