Analysis of a model of field crack mechanics for brittle materials
Analysis of a model of field crack mechanics for brittle materials
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DOI：
10.1016/j.cma.2021.114061
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发表时间：
2021-12
影响因子：
7.2
通讯作者：
L. Morin;A. Acharya
中科院分区：
文献类型：
--
作者：
L. Morin;A. Acharya
建立并分析了三维弹性域内类断层层中任意脆性裂纹扩展的计算模型及其相关的准静态场和动态场。采用基于fft的线性动量平衡求解器和godunov型投影-演化法求解裂纹演化方程。作为应用，我们探讨了有和没有表面能的裂纹扩展的平衡和不可复性问题，强度和韧性标准的存在性，准静态和动态条件下的裂纹扩展，包括模式I， II和III，以及多轴压缩载荷。
A computational model for arbitrary brittle crack propagation, in a fault-like layer within a 3-d elastic domain, and its associated quasi-static and dynamic fields is developed and analyzed. It uses a FFT-based solver for the balance of linear momentum and a Godunov-type projection-evolution method for the crack evolution equation. As applications, we explore the questions of equilibria and irreversibility for crack propagation with and without surface energy, existence of strength and toughness criteria, crack propagation under quasi-static and dynamic conditions, including Modes I, II and III, as well as multiaxial compressive loadings.