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- W2801176443 abstract "The virtual element method (VEM) is a stabilized Galerkin formulation on arbitrary polytopal meshes. In the VEM, the basis functions are implicit (virtual) — they are not known nor do they need to be computed within the problem domain. Suitable projection operators are used to decompose the bilinear form at the element-level into two parts: a consistent term that reproduces a given polynomial space and a correction term that ensures stability. In this study, we consider a low-order extended virtual element method (X-VEM) that is in the spirit of the extended finite element method for crack problems. Herein, we focus on the two-dimensional Laplace crack problem. In the X-VEM, we enrich the standard virtual element space with additional discontinuous functions through the framework of partition-of-unity. The nodal basis functions in the VEM are chosen as the partition-of-unity functions, and we study means to stabilize the standard and enriched sub-matrices that constitute the element stiffness matrix. Numerical experiments are performed on the problem of a cracked membrane under mode III loading to affirm the accuracy, and to establish the optimal convergence in energy of the method." @default.
- W2801176443 created "2018-05-17" @default.
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- W2801176443 date "2018-04-20" @default.
- W2801176443 modified "2023-10-16" @default.
- W2801176443 title "Numerical experiments with the extended virtual element method for the Laplace problem with strong discontinuities" @default.
- W2801176443 doi "https://doi.org/10.2172/1434461" @default.
- W2801176443 hasPublicationYear "2018" @default.
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