捆绑式运载火箭的一体化模型降阶  

Integrated Model Reduction for a Carrier Rocket

作　　者：张茜[1,2] 刘盼[1,2] 蔡国平[1,2] 

机构地区：[1]上海交通大学工程力学系,上海200240 [2]海洋工程国家重点实验室,上海200240

出　　处：《导弹与航天运载技术》2012年第5期1-5,14,共6页Missiles and Space Vehicles

基　　金：国家自然科学基金重点项目(11132001);面上项目(11072146;11002087);教育部博士点基金(20110073110008)

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。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.

关 键 词：捆绑式运载火箭 一体化模型降阶 模态综合法 内平衡准则 

分 类 号：V414[航空宇航科学与技术—航空宇航推进理论与工程]