The interior penalty virtual element method for the two-dimensional biharmonic eigenvalue problem

authored by
Jian Meng, Bing Bing Xu, Fang Su, Xu Qian
Abstract

The biharmonic eigenvalue problem is a fourth order eigenmodel appearing in many applications of the mechanics, fluid and inverse scattering theory. In this paper, we introduce the interior penalty virtual element method for the biharmonic eigenvalue problem in two dimensions. It preserves the symmetric positive-definiteness of the continuous problem and reduces the total number of required degrees of freedom. Considering standard assumptions on polygonal meshes, we prove the correct approximation of spectrum for the proposed virtual element scheme. Necessitated by supporting the convergence analysis, representative numerical examples are reported, including the optimal convergence on different meshes, the associate vibration and buckling problems with clamped, simply supported and Cahn–Hilliard boundary conditions, together with developing Serendipity version dropping the internal-to-element degrees of freedom.

Organisation(s)
Institute of Continuum Mechanics
External Organisation(s)
National University of Defense Technology
Type
Article
Journal
Computer Methods in Applied Mechanics and Engineering
Volume
436
No. of pages
20
ISSN
0045-7825
Publication date
01.03.2025
Publication status
Published
Peer reviewed
Yes
ASJC Scopus subject areas
Computational Mechanics, Mechanics of Materials, Mechanical Engineering, General Physics and Astronomy, Computer Science Applications
Electronic version(s)
https://doi.org/10.1016/j.cma.2024.117685 (Access: Closed)
 

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