期刊
COMPUTATIONAL MECHANICS
卷 53, 期 5, 页码 893-908出版社
SPRINGER
DOI: 10.1007/s00466-013-0938-4
关键词
XFEM; Spring-like interface; Equivalent eigenstrain; Variational formulation
资金
- Italian PRIN Fund [2009XWLFKW]
Several engineering applications rely on particulate composite materials, and numerical modelling of the matrix-inclusion interface is therefore a crucial part of the design process. The focus of this work is on an original use of the equivalent eigenstrain concept in the development of a simplified eXtended Finite Element Method. Key points are: the replacement of the matrix-inclusion interface by a coating layer with small but finite thickness, and its simulation as an inclusion with an equivalent eigenstrain. For vanishing thickness, the model is consistent with a spring-like interface model. The problem of a spherical inclusion within a cylinder is solved. The results show that the proposed approach is effective and accurate.
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