The synthetic substructure technique of the fixed-interface mode is adopted to solve the impact problem of a flexible body.

该文采用固定界面模态综合子结构法对柔性体的撞击问题进行研究。

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According to the high iterative feature of shell and tyre structure, the multi_level substructure technique is adopted to set up the multi_body contact model between tyres and long shell.

针对筒体、滚圈结构重复性强的特点，基于多重子结构技术，建立了超长筒体与滚圈三维多体接触模型；

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In this paper, the substructure method (SSSA), which USES the technique of modal synthesis to simplify the calculation, is aimed at the improvement on the weakness in the existing methods.

针对现有结构灵敏度分析方法中存在的问题，借鉴于模态综合技术在计算上的简便性，提出并建立了结构灵敏度分析的子结构方法(SSSA法)。

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