现象学模型
物理
标量场
弹性(物理)
位移场
经典力学
机械
相场模型
统计物理学
相(物质)
凝聚态物理
有限元法
量子力学
热力学
作者
Alain Karma,David A. Kessler,Herbert Levine
标识
DOI:10.1103/physrevlett.87.045501
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.
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