| 动态有限元模型建立的逆方法 |
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| 引用本文： | 朱德懋
,孙久厚.动态有限元模型建立的逆方法[J].南京航空航天大学学报,1986(4). |
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| 作者姓名： | 朱德懋 孙久厚 |
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| 摘 要： | 本文介绍一种用测量的特征对(归一化振型和固有频率)建立结构系统动态有限元模型的方法。有限元模型用质量和刚度参数表示,这些参数由正交条件和特征方程的加权欧氏范数取极小值来确定。对不完全测量特征对条件下解的唯一性和不完全测点集的处理方法进行了讨论。文中给出的实例表明,这里提出的方法是可行的。
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| 关 键 词： | 结构动力分析 有限元法 动态模型 建立模型 |
An Inverse Method of Dynamic Finite Element Modeling |
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| Zhu Demao Swn Jiuhou.An Inverse Method of Dynamic Finite Element Modeling[J].Journal of Nanjing University of Aeronautics & Astronautics,1986(4). |
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| Authors: | Zhu Demao Swn Jiuhou |
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| Institution: | Zhu Demao Swn Jiuhou |
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| Abstract: | A method of creating dynamic finite element modeling of structure systems using measured: eigenpairs (normal modes and natural frequencies) is presented in this paper.The finite element model is expressed by mass and stiffness parameters,which are determined by minimization of weighted Euclidean,norms of orthogonality conditions and characteristics equations.The treatment of incomplete set,of measured points and the uniqueness of the solution under the condition of incomplete set of measured eigenpairs are discussed.A sample problem is given to demonstrate the validity of this proposed method. |
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| Keywords: | dynamic structural analysis finite element method dynamic models model building |
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