91制片糖心vlog玩偶传媒|91传媒天美传媒|亚洲成人久久精品国产|麻豆文化传媒免费欢迎你|91麻豆视频高清|采访麻豆传媒映画拍AV|国产天美传媒国产原创av剧情|91制片厂果冻传了|国产色多多网站|天美传媒欧美av果冻传媒,亚洲精品在线视频,蜜桃影像传媒牛年贺岁,亚洲精品一区在线看

“天宮一號(hào)”目標(biāo)飛行器結(jié)構(gòu)模態(tài)試驗(yàn)方法

Method of structural modal test for Tiangong-I target spacecraft

  • 摘要: “天宮一號(hào)”目標(biāo)飛行器結(jié)構(gòu)初樣模態(tài)試驗(yàn)的激勵(lì)方式、模態(tài)參數(shù)的識(shí)別方法及試驗(yàn)結(jié)果的評(píng)估等都有其獨(dú)到的地方。多點(diǎn)激勵(lì)模態(tài)試驗(yàn)的關(guān)鍵在于激勵(lì)位置的選擇及考核輸入激勵(lì)力的相關(guān)性，識(shí)別耦合緊密的模態(tài)結(jié)果重點(diǎn)在于參數(shù)識(shí)別算法。文章從模態(tài)試驗(yàn)原理出發(fā)，對(duì)多點(diǎn)激勵(lì)在“天宮一號(hào)”目標(biāo)飛行器結(jié)構(gòu)初樣模態(tài)試驗(yàn)中的應(yīng)用及耦合緊密的模態(tài)試驗(yàn)結(jié)果的識(shí)別方法進(jìn)行了探討和分析。

     

    Abstract: With a great number of subsystems and subassemblies in the Tiangong-I target spacecraft, its structural modal test would have special features in terms of the exciting mode, the identification of modal parameters, and the estimation of test results. The key to the multiple-input modal test is the location of the excitation force and the correlation of the input forces. The key to estimating the closely-coupled modal parameters is the algorithm. Based on the principle of modal test, this paper reviews problems in the application of experimental modal analysis(EMA) for the Tiangong-I target spacecraft, especially, the method of estimating closely-coupled modal parameters.

     

    • HTML全文

/

返回文章
返回