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论文类型：期刊论文

发表时间：2010-11-01

发表刊物：APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION

收录刊物：Scopus、EI、SCIE

卷号：31

期号：11

页面范围：1337-1346

ISSN号：0253-4827

关键字：sampling theorem; efficiency; finite element discretization; macro element; condensation method; deformation modification; dispersion relationship

摘要：The discretization size is limited by the sampling theorem, and the limit is one half of the wavelength of the highest frequency of the problem. However, one half of the wavelength is an ideal value. In general, the discretization size that can ensure the accuracy of the simulation is much smaller than this value in the traditional finite element method. The possible reason of this phenomenon is analyzed in this paper, and an efficient method is given to improve the simulation accuracy.