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Dynamics response analysis of airborne external storage system with clearance between missile-frame

Yongfeng YANG  Qingyang ZHENG  Jianjun WANG  Zhongfu MA  Xiangqiu LIU  
【摘要】:Considering the aircraft and its external components are subjected to complex and variable aerodynamic loads during the working process, the missile-frame clearance system of the airborne external missile is investigated. The random vibration characteristics of the airborne external components are analyzed by finite element method. The finite element model is optimized with reference to the test results, and the effects of different clearance on the dynamic response of the missile-frame system are compared. The result shows that the frequency response curves of the same position and the resonant peak frequencies are consistent under different clearances. The acceleration response at both ends of the missile is large and the amplitude near the center of mass is gentle.The results can be used to predict reasonable missile-frame clearance and make guidance to the structural design and reliability analysis of the missile-frame system.

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