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论文类型：期刊论文

发表时间：2015-06-01

发表刊物：ACTA MECHANICA SOLIDA SINICA

收录刊物：SCIE、EI、CSCD

卷号：28

期号：3

页面范围：235-251

ISSN号：0894-9166

关键字：concurrent multiscale method; crack propagation; extended finite element method; level set method

摘要：A concurrent multiscale method is developed for simulating quasi-static crack propagation in which the failure processes occur in only a small portion of the structure. For this purpose, a multiscale model is adopted and both scales are discretized with finite-element meshes. The extended finite element method is employed to take into account the propagation of discontinuities on the fine-scale subregions. At the same time, for the other subregions, the coarse-scale mesh is employed and is resolved by using the extended multiscale finite element method. Several representative numerical examples are given to verify the validity of the method.