个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:力学与航空航天学院
电子邮箱:xlguo@dlut.edu.cn
Improvement of FEM's dynamic property
点击次数:
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:SCIE、EI、Scopus
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.