本文選題：飛艇 + 剛?cè)狁詈辖Y(jié)構(gòu)　； 參考：《計算機仿真》2016年11期

【摘要】：針對推進器支架安裝在艇體兩側(cè)式布局的軟式飛艇,研究飛艇艇體與推進支架結(jié)構(gòu)的動力學(xué)特性。通過建立飛艇艇體與推進器支架結(jié)構(gòu)的有限元模型,分析不同艇體內(nèi)壓下,艇體與推進支架結(jié)構(gòu)系統(tǒng)的模態(tài)特性,以及結(jié)構(gòu)系統(tǒng)在推進螺旋槳不同轉(zhuǎn)速下的動力響應(yīng),最終得到艇體與推進支架結(jié)構(gòu)的固有頻率、振型及響應(yīng)函數(shù)隨艇體內(nèi)壓的變化關(guān)系。仿真結(jié)果表明飛艇艇體的存在使得整個結(jié)構(gòu)系統(tǒng)的固有頻率降低,產(chǎn)生耦合振動。最后結(jié)合分析結(jié)果對艇體與推進支架結(jié)構(gòu)設(shè)計提出了建議。
[Abstract]:The dynamic characteristics of the airship and propulsive support structure were studied for the soft airship with propeller support mounted on both sides of the hull. By establishing the finite element model of the airship hull and propeller support structure, the modal characteristics of the hull and propulsive support structure system under different hull pressure are analyzed, and the dynamic response of the structure system under different speeds of propeller is analyzed. Finally, the relationship between the natural frequency, mode shape and response function of the hull and the propulsion support structure with the internal pressure of the hull is obtained. The simulation results show that the natural frequency of the whole structure system is reduced and the coupling vibration is produced by the existence of the airship hull. Finally, some suggestions on the structure design of the hull and propulsive support are put forward based on the analysis results.
【作者單位】： 中國科學(xué)院光電研究院;中國科學(xué)院大學(xué);
【分類號】：V274

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