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Virtual Element Formulation for Finite Strain Elastodynamics

Mertcan Cihan, BlaŽ Hudobivnik, Fadi Aldakheel, Peter Wriggers*

Institute for Continuum Mechanics, Leibniz Universität Hannover, Hannover, 30419, Germany

* Corresponding Author:Peter Wriggers. Email: email-hannover.de

(This article belongs to the Special Issue: Advances in Computational Mechanics and Optimization<br/>To celebrate the 95th birthday of Professor Karl Stark Pister)

Computer Modeling in Engineering & Sciences 2021, 129(3), 1151-1180. https://doi.org/10.32604/cmes.2021.016851

Abstract

The virtual element method (VEM) can be seen as an extension of the classical finite element method (FEM) based on Galerkin projection. It allows meshes with highly irregular shaped elements, including concave shapes. So far the virtual element method has been applied to various engineering problems such as elasto-plasticity, multiphysics, damage and fracture mechanics. This work focuses on the extension of the virtual element method to efficient modeling of nonlinear elasto-dynamics undergoing large deformations. Within this framework, we employ low-order ansatz functions in two and three dimensions for elements that can have arbitrary polygonal shape. The formulations considered in this contribution are based on minimization of potential function for both the static and the dynamic behavior. Generally the construction of a virtual element is based on a projection part and a stabilization part. While the stiffness matrix needs a suitable stabilization, the mass matrix can be calculated using only the projection part. For the implicit time integration scheme, Newmark-Method is used. To show the performance of the method, various two- and three-dimensional numerical examples in are presented.

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APA Style
Cihan, M., Hudobivnik, B., Aldakheel, F., Wriggers, P. (2021). Virtual element formulation for finite strain elastodynamics. Computer Modeling in Engineering & Sciences, 129(3), 1151-1180. https://doi.org/10.32604/cmes.2021.016851
Vancouver Style
Cihan M, Hudobivnik B, Aldakheel F, Wriggers P. Virtual element formulation for finite strain elastodynamics. Comput Model Eng Sci. 2021;129(3):1151-1180 https://doi.org/10.32604/cmes.2021.016851
IEEE Style
M. Cihan, B. Hudobivnik, F. Aldakheel, and P. Wriggers "Virtual Element Formulation for Finite Strain Elastodynamics," Comput. Model. Eng. Sci., vol. 129, no. 3, pp. 1151-1180. 2021. https://doi.org/10.32604/cmes.2021.016851



cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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