Abstract
A new formulation of triangle element is developed. Based on the concept of unsymmetric finite element formulation, classical linear triangle shape functions are used as test functions, and FE-LSPIM TRI3 element shape functions are used as trial functions. The former is fulfill the requirements of intra-element and inter-element continuity in displacement field, and the latter is a good alternative for requirements of completeness in displacement field. Typical test problems for static solids are analyzed. The results show that the proposed element has good accuracy, and is superior to classical linear triangle element and isoparametric quad element.
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