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Fully automated mixed mode crack propagation analyses based on tetrahedral finite element and VCCM (virtual crack closure-integral method)

机译:基于四面体有限元和VCCM(虚拟裂纹闭合积分法)的全自动混合模式裂纹扩展分析

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摘要

The authors have been developing a crack propagation analysis system that can deal with arbitrary shaped cracks in three-dimensional solids. The system is consisting of mesh generation software, a large-scale finite element analysis program and a fracture mechanics module. To evaluate the stress intensity factors, virtual crack closure-integral method (VCCM) for the quadratic tetrahedral finite element is adopted and is included in the fracture mechanics module. The rate and direction of crack propagation are predicted by using appropriate formulae based on the stress intensity factors. In this paper, the crack propagation system is briefly described and some numerical results are presented.
机译:作者一直在开发一种裂纹扩展分析系统,该系统可以处理三维实体中任意形状的裂纹。该系统由网格生成软件,大型有限元分析程序和断裂力学模块组成。为了评估应力强度因子,采用了针对二次四面体有限元的虚拟裂纹闭合积分方法(VCCM),并将其包含在断裂力学模块中。通过基于应力强度因子的适当公式来预测裂纹扩展的速率和方向。本文简要介绍了裂纹扩展系统,并给出了一些数值结果。

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