期刊
COMPUTERS & STRUCTURES
卷 81, 期 3, 页码 119-129出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0045-7949(02)00431-5
关键词
crack; extended finite element method (XFEM); finite element (FE) method; generalized finite element method (GFEM); level set method (LSM); partition of unity (PU)
The recently developed techniques for modelling cracking within the finite element (FE) framework which use meshes independent of the crack configuration and thus avoid remeshing are reviewed. They combine the traditional FE method with the partition of unity method for modelling individual cracks, intersecting or branching cracks, as well as cracks emanating from holes or other internal interfaces. Numerical integration for the enriched elements, linear dependence and the corresponding solution techniques for the discretized. system of equations, as well as the accuracy of the crack tip fields are addressed. Future improvements of the techniques as well as their applications are discussed. (C) 2003 Elsevier Science Ltd. All rights reserved.
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