A new three-dimensional variable-node finite element and its application for fluid-solid interaction problems

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A new three-dimensional variable-node element is proposed to achieve an efficient connection of non-matching interfaces between dissimilar finite element meshes. The variable-node elements at interfaces are compatible with conventional finite elements, and satisfy the interface conditions of continuity, and completeness across non-matching meshes. The present method thereby provides a seamless connection between dissimilar finite element meshes and a correct load transfer across non-matching interfaces. Therefore, it leads to an efficient approach for solving a class of problems involving the non-matching interfaces such as fluid solid interaction problems. Numerical examples are presented to show the effectiveness of the present method for solving fluid solid interaction problems with non-conforming interfaces, and the usefulness and application of the present method are discussed.
Publisher
ELSEVIER SCIENCE SA
Issue Date
2014-11
Language
English
Article Type
Article
Keywords

CONSERVATIVE LOAD-TRANSFER; NONMATCHING MESHES; QUADRATIC INTERPOLATION; HEXAHEDRAL MESHES; INTERFACE ELEMENT; PART I; COMPUTATION; REFINEMENT; ALGORITHMS; PROJECTION

Citation

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING, v.281, pp.81 - 105

ISSN
0045-7825
DOI
10.1016/j.cma.2014.07.026
URI
http://hdl.handle.net/10203/194655
Appears in Collection
ME-Journal Papers(저널논문)
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