本文選題：衛(wèi)星 + 蜂窩板　； 參考：《紅外與激光工程》2016年12期

【摘要】：為了滿足星載一體化光學(xué)小衛(wèi)星對主承力板的剛度和重量要求,降低主承力板上各單機的動力學(xué)響應(yīng),對工程常用的蜂窩夾層板等效理論和動力學(xué)分析方法進行研究。首先,介紹了六邊形蜂窩芯子的等效理論和考慮膠層的面板等效理論。建立了某星載一體化光學(xué)小衛(wèi)星-Y向主承力板的有限元模型,以重量和動態(tài)剛度為目標,對蜂窩芯子參數(shù)進行優(yōu)化分析。通過分析比較不同芯子蜂窩板的重量和剛度,最終選擇壁厚為0.03 mm,邊長為5 mm的蜂窩芯子。然后,在模態(tài)分析的基礎(chǔ)上,對蜂窩主承力板進行正弦振動和隨機振動分析。最后,進行相應(yīng)的正弦振動和隨機振動試驗。分析與試驗結(jié)果表明:一階自然頻率誤差為1.9%;正弦加速度響應(yīng)誤差為4.5%;隨機均方根加速度響應(yīng)誤差為3.7%。表明分析模型建立準確,參數(shù)等效合理,動力學(xué)響應(yīng)分析準確,并且能滿足衛(wèi)星結(jié)構(gòu)總體和各個星上單機對主承力板的動力學(xué)響應(yīng)要求。
[Abstract]:In order to meet the requirement of stiffness and weight of spaceborne integrated optical small satellite to the main bearing plate and to reduce the dynamic response of each single machine on the main bearing plate, the equivalent theory and dynamic analysis method of honeycomb sandwich plate are studied. Firstly, the equivalent theory of hexagonal honeycomb core and the equivalent theory of panel considering rubber layer are introduced. The finite element model of a small spaceborne integrated optical satellite-Y bearing plate is established. The parameters of honeycomb core are optimized and analyzed with the aim of weight and dynamic stiffness. By analyzing and comparing the weight and stiffness of different core honeycomb panels, the honeycomb cores with a wall thickness of 0.03 mm and a side length of 5 mm were selected. Then, on the basis of modal analysis, sinusoidal vibration and random vibration analysis of honeycomb main bearing plate are carried out. Finally, the corresponding sinusoidal vibration and random vibration tests are carried out. The analysis and experimental results show that the first order natural frequency error is 1.9, the sinusoidal acceleration response error is 4.5 and the random root mean square acceleration response error is 3.7. It is shown that the analytical model is accurate, the parameters are equivalent and reasonable, the dynamic response analysis is accurate, and it can meet the requirements of the overall satellite structure and the dynamic response of each onboard single machine to the main bearing plate.
【作者單位】： 中國科學(xué)院蘇州生物醫(yī)學(xué)工程技術(shù)研究所;中國科學(xué)院長春光學(xué)精密機械與物理研究所;中國科學(xué)院大學(xué);
【基金】：國家863計劃(2012AA121502)
【分類號】：V423.4

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