Improvement of Properties of Lumped Mass Matrix and Stiffness Matrix of Higher-order Elements by Usi

来源 :中国计算力学大会2018暨国际华人计算力学大会2018 | 被引量 : 0次 | 上传用户：jma_sd

【摘要】

：

【作者】

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Shaozhong Lin Dongdong Xu

【机构】

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Changjiang River Scientific Research Institute,Wuhan,Hubei,430010,China;Research Center on Water Eng

【出处】

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中国计算力学大会2018暨国际华人计算力学大会2018

【发表日期】

：

2018年10期

【关键词】

：

Higher-order elements Nodal displacement transformation Lumped mass matrix Condi

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　　Lumped mass matrices offer benefits to the structural dynamics.There have been many mass lumping schemes.However,for some higher-order elements,the mathematically rigorous mass lumping schemes,such as the mass lumping by nodal quadrature and the row-sum technique,give zero or negative diagonal items in the lumped mass matrix,posing significant impediments in applications.

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Improvement of Properties of Lumped Mass Matrix and Stiffness Matrix of Higher-order Elements by Usi

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