Phase field modeling of fast crack propagation.
Phase field modeling of fast crack propagation.
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DOI：
10.1103/physrevlett.96.015502
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发表时间：
2005-08
影响因子：
8.6
通讯作者：
R. Spatschek;M. Hartmann;E. Brener;H. Müller-krumbhaar;K. Kassner
中科院分区：
文献类型：
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作者：
R. Spatschek;M. Hartmann;E. Brener;H. Müller-krumbhaar;K. Kassner
我们提出了一个连续介质理论，预测稳态裂纹扩展。该理论克服了通常的有限时间尖点奇异性的Grinfeld不稳定性的弹性动力学效应，恢复选择的稳定状态的尖端半径和速度的列入问题。我们开发了一个相场模型的弹性诱导相变，在小或消失的弹性系数在新的阶段的限制，断裂可以研究。模拟证实了快速裂纹扩展的分析预测。
We present a continuum theory which predicts the steady state propagation of cracks. The theory overcomes the usual problem of a finite time cusp singularity of the Grinfeld instability by the inclusion of elastodynamic effects which restore selection of the steady state tip radius and velocity. We developed a phase-field model for elastically induced phase transitions; in the limit of small or vanishing elastic coefficients in the new phase, fracture can be studied. The simulations confirm analytical predictions for fast crack propagation.