A piecewise linear finite element method for the buckling and the vibration problems of thin plates

Mora, David; Rodríguez, Rodolfo

doi:10.1090/S0025-5718-09-02228-5

A piecewise linear finite element method for the buckling and the vibration problems of thin plates
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by David Mora and Rodolfo Rodríguez;

Math. Comp. 78 (2009), 1891-1917

DOI: https://doi.org/10.1090/S0025-5718-09-02228-5

Published electronically: February 3, 2009

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Abstract:

The aim of this paper is to analyze a piecewise linear finite element method to approximate the buckling and the vibration problems of a thin plate. The method is based on a conforming discretization of a bending moment formulation for the Kirchhoff-Love model. The analysis restricts to simply connected polygonal clamped plates, not necessarily convex. The method is proved to converge with optimal order for both spectral problems, including an improved order for the eigenvalues. Numerical experiments are reported to assess its performance and to compare it with other low-order finite element methods.

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