How fast can cracks propagate?

被引：172
|
作者：
Abraham, FF [1 ]
Gao, HJ
机构：
[1] IBM Corp, Div Res, Almaden Res Ctr, San Jose, CA 95120 USA
[2] Stanford Univ, Dept Mech Engn, Div Mech & Computat, Stanford, CA 94305 USA
来源：
PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 14期
关键词：
D O I：
10.1103/PhysRevLett.84.3113
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have performed atomic simulations of crack propagation along a weak interface joining two harmonic crystals. The simulations show that a mode II shear dominated crack can accelerate to the Rayleigh wave speed and then nucleate an intersonic daughter that travels at the longitudinal wave speed. This contradicts the general belief that a crack can travel no faster than the Rayleigh speed.
引用
收藏
页码：3113 / 3116
页数：4
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