| 一种杂交动力子结构法 |
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| 引用本文： | 王文亮,刘玉民.一种杂交动力子结构法[J].复旦学报(自然科学版),1989,28(4):448-452. |
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| 作者姓名： | 王文亮 刘玉民 |
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| 作者单位： | 复旦大学应用力学系
(王文亮)，郑州机械工程研究所(刘玉民) |
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| 摘 要： |
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| 关 键 词： | 结构 振动特性 子结构法 模态综合 |
A HYBRID DYNAMIC SUBSTRUCTURE TECHNIQUE |
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| Wang Wenliang,.A HYBRID DYNAMIC SUBSTRUCTURE TECHNIQUE[J].Journal of Fudan University(Natural Science),1989,28(4):448-452. |
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| Authors: | Wang Wenliang |
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| Abstract: | A hybrid dynamic substructure technique is presented for calculating the na-tural vibration characteristics of undamped structures. It has the advantages ofboth the fixed-interface and free-interface modal syntheses. A selected set of res-traints are imposed on substructure interfaces to avoid free-free substructures orredundant interface degrees of freedom shared by more than two substructures.The motion of each substructure is described by the reserved free-interface normalmodes and the residual modes. Previously imposed restraints are released with theconstraint modes defined on the above-mentioned set of restraints. Consequently,this technique simplifies the evaluation of the residual modes Which represent theflexibility of all the deleted normal modes and facilitates final system assembly.The coordinates in final synthesis are constraint modal coordinates plus normalmodal coordinates of all constrained substructures. In principle, this method hashigher computational efficiency. |
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| Keywords: | substructure method modal synthesis connection coordinate |
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