Improvement of the performance of a tetrahedral element with rotational DOFs using strain smoothing techniques

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In this paper, the performance of a 4-node tetrahedral element with rotational DOFs is improved using strain smoothing techniques. A partition-of-unity based approximation is used to construct the tetrahedral element with rotational DOFs. To overcome the stiff behavior of the tetrahedral element with rotational DOFs, a face-based strain smoothing technique is used. The stiffness matrix is expressed explicitly and the element performance is evaluated through numerical examples, which demonstrate that the proposed strain smoothed tetrahedral elements with rotational DOFs satisfy the patch test and have a better performance than other tetrahedral elements with rotational DOFs.
Publisher
KOREAN SOC MECHANICAL ENGINEERS
Issue Date
2012-04
Language
English
Article Type
Article
Keywords

SOLID MECHANICS PROBLEMS; METHOD FS-FEM; METHOD NS-FEM; MESH

Citation

JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, v.26, no.4, pp.1107 - 1114

ISSN
1738-494X
DOI
10.1007/s12206-012-0224-y
URI
http://hdl.handle.net/10203/101558
Appears in Collection
ME-Journal Papers(저널논문)
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