کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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514302 | 866723 | 2008 | 7 صفحه PDF | دانلود رایگان |
In the proposed nearest-nodes finite element method (NN-FEM), finite elements are used only for numerical integration; while shape functions are constructed in a similar way as in meshless methods, i.e. by using a set of nodes that are the nearest to a concerned quadrature point. Some of the nodes may be from adjacent elements. A recently developed local multivariate Lagrange interpolation method is used to construct shape functions. In the above way, the proposed NN-FEM inherits most of the merits from both the finite element method and meshless methods. The major attractive features of NN-FEM include: analysis results are insensitive to element distortion; a crack can propagate along an arbitrary path; with element adjacency information, time spent on searching nearest nodes is much shorter than that used by a meshless method for identifying nodes covered under an influence domain.
Journal: Finite Elements in Analysis and Design - Volume 44, Issues 12–13, August 2008, Pages 797–803