主要期刊论文

An improved finite element method for cracks with multiple branches




作者: X.M. An, G.W. Ma, H.H. Zhang, L.X. Li
发表/完成日期: 2012-08-18
期刊名称: Int J of Computational Methods
期卷: 9, 3
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论文简介
The conventional finite element method is improved to tackle complex cracks with multiple branches. The parasitic nodes are introduced to the nodes whose nodal support is completely cut by the crack surfaces, while the nodes whose supports contain crack tips inside are accordingly enriched by the crack tip functions. The principle to set parasitic nodes is regulated, and the relation to the previous methods is dissected. The formulation of the present method is derived, and numerical experiments are conducted. The results
show that the present method can treat complex cracks conveniently and efficiently, and the unknowns have a clear physical interpretation.