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基于滑动Kriging插值的无网格MLPG法求解结构动力问题

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Indexed by:期刊论文

Date of Publication:2014-02-28

Journal:振动与冲击

Included Journals:EI、PKU、ISTIC、CSCD、Scopus

Volume:33

Issue:4

Page Number:27-31

ISSN No.:1000-3835

Key Words:滑动Kriging插值;无网格局部Petrov-Galerkin;无网格法;Heaviside函数;结构动力问题

Abstract:利用基于滑动Kriging插值的无网格局部Petrov-Galerkin (MLPG)法来求解二维结构动力问题,Heaviside分段函数作为局部弱形式的权函数并采用精细积分法来离散时间域。基于滑动Kriging插值构造的形函数满足Kronecker Delta性质,因此可以直接施加本质边界条件。刚度矩阵形成过程中只涉及到边界积分,而没有涉及到区域积分和奇异积分。计算结果表明:基于滑动Kriging插值的MLPG法具有模拟简单、计算精度高等优点。

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