An efficient enrichment strategy for modeling stress singularities in isotropic composite materials with X-FEM technique

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• 作者：Sh. Akhondzadeh ; A.R. Khoei ; ^{arkhoei@sharif.edu} ; P. Broumand
• 关键词：Multi-material problems ; Asymptotic fields ; Generalized SIFs ; X-FEM method ; Singular enrichment strategy
• 刊名：Engineering Fracture Mechanics
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：169
• 期：Complete
• 页码：201-225
• 全文大小：2281 K
• 卷排序：169

文摘

A new enrichment strategy with high convergence rate and low condition number. Applying enrichment strategy to model stress singularity at multi-material junctions. Modeling stress singularity at the crack tip terminating by bimaterial interface. Applying the eigen-function expansion method to derive enrichment functions. Calculation of the generalized SIFs using direct and interaction integral methods.