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中文摘要：
以捆绑式运载火箭为对象,开展先局部后整体的一体化模型降阶技术研究,其中局部降阶采用双协调自由界面模态综合法,整体降阶采用内平衡准则。将双协调自由界面模态综合法与自由界面模态综合法和固定界面模态综合法进行对比,显示出双协调自由界面模态综合法的优越性。数值仿真结果验证了一体化模型降阶方法的有效性。
英文摘要：
In this paper, an integrated model reduction technique is proposed for a carrier rocket. In this method, model reduction work is firstly done using the double-compatible free-interface modal synthesis method, and is then done using the balanced model reduction method. The advantage of the double-compatible free-interface modal synthesis method is shown through comparing numerically with the classical free-interface and fixed-interface modal synthesis methods. The simulation results prove the effectiveness of the proposed integrated model reduction technique.
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