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Improvement of FEM's dynamic property
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作者 江增荣 段鹏飞 +1 位作者 郭杏林 丁桦 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2010年第11期1337-1346,共10页
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 d... 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. 展开更多
关键词 sampling theorem EFFICIENCY finite element discretization macro element condensation method deformation modification dispersion relationship
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