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捆绑式运载火箭的模型降阶 被引量:4

Model Reduction of a Strap-on Launch Vehicle
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摘要 以捆绑式运载火箭为对象,开展了先局部、后整体的两步模型降阶研究,其中局部降阶法采用模态综合技术,整体降阶法采用模态价值分析方法,最后通过数值仿真验证了本文所提出的两步降阶方法的有效性。 In this paper,a two-step model reduction method is proposed for a strap-on rocket.In this method,the first step of reduction work is done for flexible components using the modal synthesis method,then the second step of work is done for the overall system using the modal cost analysis method.And finally the effectiveness of the proposed reduction method is verified by the numerical simulations in the end of this paper.
作者 章敏 蔡国平
出处 《宇航学报》 EI CAS CSCD 北大核心 2010年第5期1317-1321,共5页 Journal of Astronautics
基金 国家自然科学基金(10772112 10472065) 教育部重点项目(107043) 高校博士点基金(20070248032) 上海市教委科研重点项目(09ZZ17) 海洋工程国家重点实验室自主研究课题(GKZD010807)
关键词 运载火箭 模型降阶 模态综合法 模态价值分析方法 Strap-on launch vehicle Model reduction Modal synthesis method Modal cost analysis method
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