Unsteady Crack Motion and Branching in a Phase-Field Model of Brittle Fracture

Alain Karma; Alexander E. Lobkovsky

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Unsteady Crack Motion and Branching in a Phase-Field Model of Brittle Fracture

机译：脆性断裂相场模型中的非稳态裂纹运动和分支

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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.

机译：使用连续相场方法对Ⅲ型脆性断裂进行了数值研究。结果揭示了控制加速裂纹速度和特征波速不等的分支不稳定性的物理学原理。

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来源
《Physical review letters》 |2004年第24期|p.245510.1-245510.4|共4页
作者
Alain Karma; Alexander E. Lobkovsky;
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作者单位

Department of Physics and Center for Interdisciplinary Research on Complex Systems, Northeastern University, Boston, Massachusetts 02115, USA;

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原文格式 PDF
正文语种 eng
中图分类物理学;
关键词
fatigue; brittleness; fracture; and cracks; fracture mechanics; fatigue and cracks; computational methods in continuum mechanics;

机译：疲劳;脆性;断裂;裂缝;断裂力学;疲劳和裂纹;连续力学中的计算方法;

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3. A phase-field modeling for brittle fracture and crack propagation based on the cell-based smoothed finite element method [J] . Bhowmick Sauradeep, Liu Gui Rong Engineering Fracture Mechanics . 2018,第期

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5. A two-dimensional analytical technique for studying fracture in brittle materials containing interacting kinked and branched cracks [D] . TerMaath, Stephanie Carmella. 2000

机译：研究包含相互作用的扭结和分支裂纹的脆性材料中断裂的二维分析技术
6. Mesh-Based and Meshfree Reduced Order Phase-Field Models for Brittle Fracture: One Dimensional Problems [O] . Ngoc-Hien Nguyen, Vinh Phu Nguyen, Jian-Ying Wu, 2019

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7. Unsteady Crack Motion and Branching in a Phase-Field Model of Brittle Fracture [O] . Karma, Alain, Lobkovsky, Alexander E. 2004

机译：脆性相场模型中的非定常裂纹运动与分支断裂

Unsteady Crack Motion and Branching in a Phase-Field Model of Brittle Fracture

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