Branching instabilities in rapid fracture: Dynamics and geometry

被引：30

作者：

Bouchbinder, E ^{[1
]}

Mathiesen, J ^{[1
]}

Procaccia, I ^{[1
]}

机构：

[1] Weizmann Inst Sci, Dept Chem Phys, IL-76100 Rehovot, Israel

来源：

PHYSICAL REVIEW E | 2005年 / 71卷 / 05期

关键词：

D O I：

10.1103/PhysRevE.71.056118

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 propose a theoretical model for branching instabilities in 2-dimensional fracture, offering predictions for when crack branching occurs, how multiple cracks develop, and what is the geometry of multiple branches. The model is based on equations of motion for crack tips which depend only on the time dependent stress intensity factors. The latter are obtained by invoking an approximate relation between static and dynamic stress intensity factors, together with an essentially exact calculation of the static ones. The results of this model are in qualitative agreement with a number of experiments in the literature.

引用

页数：9

共 14 条

[1] Path prediction of kinked and branched cracks in plane situations [J].