Cracks faster than the shear wave speed

被引：408

作者：

Rosakis, AJ ^{[1
]}

Samudrala, O ^{[1
]}

Coker, D ^{[1
]}

机构：

[1] CALTECH, Grad Aeronaut Labs, Pasadena, CA 91125 USA

来源：

SCIENCE | 1999年 / 284卷 / 5418期

关键词：

D O I：

10.1126/science.284.5418.1337

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Classical dynamic fracture theories predict the surface wave speed to be the limiting speed for propagation of in-plane cracks in homogeneous, Linear elastic materials subjected to remote Loading. This report presents experimental evidence to the contrary. Intersonic shear-dominated crack growth featuring shear shock waves was observed along weak planes in a brittle polyester resin under far-field asymmetric loading. When steady-state conditions were attained, the shear cracks propagated at speeds close to root 2 times the material shear wave speed. These observations have similarities to shallow earthquake events where intersonic shear rupture speeds have been surmised.

引用

页码：1337 / 1340

页数：4

共 27 条

[1] RUPTURE PROPAGATION WITH FINITE STRESS IN ANTIPLANE STRAIN [J].