Phase-field modeling of crack propagation in multiphase systems
Phase-field modeling of crack propagation in multiphase systems
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DOI：
10.1016/j.cma.2016.04.009
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发表时间：
2016-12
影响因子：
7.2
通讯作者：
D. Schneider;Ephraim Schoof;Yunfei Huang;M. Selzer;B. Nestler
中科院分区：
文献类型：
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作者：
D. Schneider;Ephraim Schoof;Yunfei Huang;M. Selzer;B. Nestler
材料中裂纹扩展的模拟一直是固体物理和材料科学中的一个挑战。相场法现已成为描述裂纹扩展的工具之一。该模型在热力学上是一致的，在考虑不同载荷类型、多个物理场和几何非线性的情况下，可以预测裂纹在均匀材料中的扩展。甚至还研究了包括塑性效应在内的动态加载过程。裂纹扩展的多相场模型对于描述细观长度尺度上的裂纹扩展是必不可少的，但该模型仍然缺乏。在这项工作中，我们克服了这一不足，并将基于Griffith理论的裂纹扩展方法与建立的相变多相场模型相结合。
Modeling of crack propagation in materials has long been a challenge in solid-state physics and materials science. The phase-field method has now established as one of the tools for the description of crack propagation. The applied models are thermodynamically consistent and predict crack propagation in homogeneous materials under the consideration of different loading types, multiple physical fields and geometrical nonlinearities. Even dynamic loading processes are studied, including plastic effects. A multiphase-field model for crack propagation, which is indispensable to describe crack propagation on a mesoscopic length scale, is still missing. In this work, we overcome this deficiency and combine a crack propagation approach, which is based on Griffith’s theory, with an established multiphase-field model for phase transformation.