| 与静力子结构结合的 Ritz 向量直接迭加法 |
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| 引用本文： | 熊善继,袁明武.与静力子结构结合的 Ritz 向量直接迭加法[J].振动工程学报,1988(2). |
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| 作者姓名： | 熊善继 袁明武 |
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| 作者单位： | 北京大学
(熊善继)，北京大学(袁明武) |
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| 摘 要： | 本文把Ritz 向量直接迭加法同静力子结构相结合,不形成也不存贮总体刚度、质量矩阵,使动力分析在子结构的层次上进行,降低了对计算机内存容量的要求。本方法在有限元和Ritz向量直接迭加法的基础上,没有引入新的假设,因此,比起传统的求解大型结构固有振动的模态综合法来精度是有保证的。
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| 关 键 词： | 子结构法 矢量迭加法 有限元法 固有振动 |
A Dynamic Substructure Technique Based on Direct Superposition of Ritz Vectors and Static Substructuring |
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| Xiong Shanji Yuan Mingwu.A Dynamic Substructure Technique Based on Direct Superposition of Ritz Vectors and Static Substructuring[J].Journal of Vibration Engineering,1988(2). |
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| Authors: | Xiong Shanji Yuan Mingwu |
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| Affiliation: | Beijing University |
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| Abstract: | A method based on direct superposition of Ritz vectors and static substru-cturing is proposed.In this method,eigenvalue problems are calculated onsubstructure level and there is no need to form and store the globle stiffnessand mass matrix.Therefore the capacity of dynamic analysis is raised forlimited in-core memory.No additional assumptions are made besides FEM andmethod of direct superposition of Ritz vectors,the accuracy of this method isassured in comparison with the general mode component synthesis. |
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| Keywords: | substructure method vector superposition method finite element method natural vibration |
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