arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2201.03658math.NAcs.NA
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线弹性谱问题混合FEM离散的后验分析

A posteriori analysis for a mixed FEM discretization of the linear elasticity spectral problem

Felipe Lepe, Gonzalo Rivera, Jesús Vellojín

摘要:

本文分析了线性弹性力学本征值问题的混合形式的后验误差估计。提出了近似可压缩弹性谱问题和理想可压缩弹性谱问题的后验估计。与后处理参数,我们能够证明所提出的估计的可靠性和效率。数值方法采用Raviart-Thomas单元逼近伪应力,位移采用分段多项式逼近。我们用数值试验说明了我们的结果。

英文摘要:

In this paper we analyze a posteriori error estimates for a mixed formulation of the linear elasticity eigenvalue problem. A posteriori estimators for the nearly and perfectly compressible elasticity spectral problems are proposed. With a post-process argument, we are able to prove reliability and efficiency for the proposed estimators. The numerical method is based in Raviart-Thomas elements to approximate the pseudostress and piecewise polynomials for the displacement. We illustrate our results with numerical tests.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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