A guide to the finite and virtual element methods for elasticity

A guide to the finite and virtual element methods for elasticity
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弹性有限元和虚拟元方法指南

DOI:
10.1016/j.apnum.2021.07.010
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发表时间:
2021
影响因子:
2.8
通讯作者:
Berbatov K
Berbatov K
中科院分区:
数学2区
文献类型:
--
作者:
Berbatov K

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本文系统地介绍了线弹性力学中求解边值问题的有限元法(FEM)和相对较新的虚元法(VEM),包括原始法和混合法。描述突出了共同的基础和FEM和VEM之间的本质区别:离散化相同的原始(Galerkin)和混合弱配方和组件的元素明智的数量,但不同的方法元素形状功能。数学公式补充了所有方法的计算机实现的详细描述,包括VEM的所有版本,这将有利于愿意开发自己的计算框架的读者。几个边值问题的数值解也被提出,以讨论的方法的弱和强的方面。
We present a systematic description and comparison of the the Finite Element Method (FEM) with the relatively new Virtual Element Method (VEM) for solving boundary value problems in linear elasticity, including primal and mixed formulations. The description highlights the common base and the essential difference between FEM and VEM: discretisation of the same primal (Galerkin) and mixed weak formulations and assembly of element-wise quantities, but different approaches to element shape functions. The mathematical formulations are complemented with detailed description of the computer implementation of all methods, including all versions of VEM, which will benefit readers willing to develop their own computational framework. Numerical solutions of several boundary value problems are also presented in order to discuss the weaker and stronger sides of the methods.
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期刊: ArXiv
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