Phase-field model of mode III dynamic fracture

被引：485

作者：

Karma, A ^{[1
]}

Kessler, DA

Levine, H

机构：

[1] Northeastern Univ, Dept Phys, Boston, MA 02215 USA

[2] Bar Ilan Univ, Dept Phys, Ramat Gan, Israel

[3] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.87.045501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We introduce a phenomenological continuum model for the mode III dynamic fracture that is based on the phase-field methodology used extensively to model interfacial pattern formation. We couple a scalar field, which distinguishes between "broken" and "unbroken" states of the system, to the displacement field in a way that consistently includes both macroscopic elasticity and a simple rotationally invariant short-scale description of breaking. We report two-dimensional simulations that yield steady-state crack motion in a strip geometry above the Griffith threshold.

引用

页码：45501 / 1

页数：4

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