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A 3D pyramid spline element 被引量:2
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作者 Juan Chen Chong-Jun Li Wan-Ji Chen 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2011年第6期986-993,共8页
In this paper,a 13-node pyramid spline element is derived by using the tetrahedron volume coordinates and the B-net method,which achieves the second order completeness in Cartesian coordinates.Some appropriate example... In this paper,a 13-node pyramid spline element is derived by using the tetrahedron volume coordinates and the B-net method,which achieves the second order completeness in Cartesian coordinates.Some appropriate examples were employed to evaluate the performance of the proposed element.The numerical results show that the spline element has much better performance compared with the isoparametric serendipity element Q20 and its degenerate pyramid element P13 especially when mesh is distorted,and it is comparable to the Lagrange element Q27.It has been demonstrated that the spline finite element method is an efficient tool for developing high accuracy elements. 展开更多
关键词 Spline finite element Pyramid element the second order completeness B-net method
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