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On the equivalence between the cell-based smoothed finite element method and the virtual element method

机译:关于基于单元的平滑有限元方法的等价性   和虚拟元素方法

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摘要

We revisit the cell-based smoothed finite element method (SFEM) forquadrilateral elements and extend it to arbitrary polygons and polyhedrons in2D and 3D, respectively. We highlight the similarity between the SFEM and thevirtual element method (VEM). Based on the VEM, we propose a new stabilizationapproach to the SFEM when applied to arbitrary polygons and polyhedrons. Theaccuracy and the convergence properties of the SFEM are studied with a fewbenchmark problems in 2D and 3D linear elasticity. Later, the SFEM is combinedwith the scaled boundary finite element method to problems involvingsingularity within the framework of the linear elastic fracture mechanics in2D.
机译:我们重新审视四边形单元的基于单元的平滑有限元方法(SFEM),并将其分别扩展到2D和3D中的任意多边形和多面体。我们强调了SFEM和虚拟元素方法(VEM)之间的相似性。基于VEM,当对任意多边形和多面体应用时,我们为SFEM提出了一种新的稳定化方法。研究了SFEM的准确性和收敛性,并在2D和3D线性弹性方面存在一些基准问题。后来,SFEM与比例边界有限元方法相结合,解决了二维线性弹性断裂力学框架内涉及奇异性的问题。

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