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发布时间：2019-03-09

论文类型：期刊论文

发表时间：2015-05-01

发表刊物：ACTA MECHANICA

收录刊物：Scopus、EI、SCIE

卷号：226

期号：5

页面范围：1549-1569

ISSN号：0001-5970

摘要：A multiscale strategy is developed for the thermo-elastic plastic stress analysis of heterogeneous multiphase materials. The strategy is based on the extended multiscale finite element method (EMsFEM) and the enriched partition of unity approach. In the formulation, the enriched numerical base functions are adapted into the EMsFEM, which show good applicability to the local deformation pattern. Thus, the microscopic variable fields can be reproduced precisely, which are crucial for the nonlinear analysis. Numerical examples of two-phase heterogeneous media with regular and irregular microstructures demonstrate the validity and efficiency of the proposed method.