Unsteady crack motion and branching in a phase-field model of brittle fracture

被引：129

作者：

Karma, A ^{[1
]}

Lobkovsky, AE

机构：

[1] Northeastern Univ, Dept Phys, Boston, MA 02115 USA

[2] Northeastern Univ, Ctr Interdisciplinary Res Complex Syst, Boston, MA 02115 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.92.245510

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Crack propagation is studied numerically using a continuum phase-field approach to mode III brittle fracture. The results shed light on the physics that controls the speed of accelerating cracks and the characteristic branching instability at a fraction of the wave speed.

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收藏

页码：245510 / 1

页数：4

相关论文

共 17 条

[1] INSTABILITY DYNAMICS OF FRACTURE - A COMPUTER-SIMULATION INVESTIGATION [J].

ABRAHAM, FF ;

BRODBECK, D ;

RAFEY, RA ;

RUDGE, WE .

PHYSICAL REVIEW LETTERS, 1994, 73 (02) :272-275

[2]

ADDABEDIA M, IN PRESS J MECH PHYS

[3]

Cramer T, 1999, Z METALLKD, V90, P675

[4] Energy dissipation and path instabilities in dynamic fracture of silicon single crystals [J].

Cramer, T ;

Wanner, A ;

Gumbsch, P .

PHYSICAL REVIEW LETTERS, 2000, 85 (04) :788-791

[5] ELASTIC FIELD OF A CRACK EXTENDING NON-UNIFORMLY UNDER GENERAL ANTI-PLANE LOADING [J].

ESHELBY, JD .

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 1969, 17 (03) :177-&

[6]

Freund L. B., 1990, DYNAMIC FRACTURE MEC

[7] A theory of local limiting speed in dynamic fracture [J].

Gao, HJ .

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 1996, 44 (09) :1453-1474

[8] Ideal brittle fracture of silicon studied with molecular dynamics [J].

Holland, D ;

Marder, M .

PHYSICAL REVIEW LETTERS, 1998, 80 (04) :746-749

[9] Phase-field model of mode III dynamic fracture [J].

Karma, A ;

Kessler, DA ;

Levine, H .

PHYSICAL REVIEW LETTERS, 2001, 87 (04) :45501-1

[10] Does the continuum theory of dynamic fracture work? art. no. 036118 [J].

Kessler, DA ;

Levine, H .

PHYSICAL REVIEW E, 2003, 68 (03) :4