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- W1966305237 abstract "Crack-tip enrichment functions are determined for a crack terminating at a bi-material interface. The stress and displacement components at the crack-tip are expressed considering plane elasticity solution based on Airy functions. The crack-tip characteristic exponents and the enrichment functions are determined using the problem boundary conditions. Single real, double real or complex characteristic exponents are found depending on the crack-angle and the relative mechanical properties of the considered bi-material. Crack-tip enrichment functions are determined for cases where the characteristic exponent is real and complex. To validate the efficiency of the enrichment functions at the crack-tip singularity, the eXtended Finite Element Method (XFEM) is used to solve a mode-I crack terminating at the bi-material interface. Thanks to two Level-set functions, the crack and the bi-material interface are located and the nodes belonging to elements cut by these discontinuities are enriched. The Stress Intensity Factors (SIF) are calculated for a crack perpendicular and terminating at the bi-material interface using the body force method (BFM). The implemented method was tested and good agreement is found when compared to other investigations in the literature." @default.
- W1966305237 created "2016-06-24" @default.
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- W1966305237 date "2013-04-01" @default.
- W1966305237 modified "2023-10-18" @default.
- W1966305237 title "An XFEM crack-tip enrichment for a crack terminating at a bi-material interface" @default.
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- W1966305237 doi "https://doi.org/10.1016/j.engfracmech.2013.02.023" @default.
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