Simulations and Analyses of Separation Characteristic for Large Scale Flexible Fairing
ZHANG Dapeng1， LEI Yongjun1, LIU Hailong2，TANG Xiaohan2
1、College of Aerospace Science and Engineering，National University of Defense Technology，Changsha 410073；
2、Beijing Institute of Aerospace Systems Engineering，Beijing 100076
Abstract：The rigid and flexible finite element models of large scale flexible fairing for analysis were established firstly．Then the separation of fairing in new generation launch vehicle was simulated by using MSC.Nastran and LS-DYNA．Compared with the rigid model，the elastic deformation of fairing and motion trail as well as energy consumption in the process of separation were analyzed besides the effect of elastic vibration on separation angular velocity and available envelope space．The results demonstrate that the end of column is influenced most significantly on available envelope space by elastic vibration and elastic vibration has little influence on the displacements of fairing centroid．It also shows that separation angular velocity decreases because of elastic vibration when fairing centroid is resches the peak or fairing is unhooking connections with launch vehicle and 36 percent elastic potential energy of spring is wasted．These conclusions can provide important reference to both the structural optimization of fairing separation system and increasing the reliability of the separation process．
张大鹏1，雷勇军1,柳海龙2，唐霄汉2. 大型柔性整流罩分离特点仿真分析[J]. 振动与冲击, 2015, 34(22): 115-120.
ZHANG Dapeng1， LEI Yongjun1, LIU Hailong2，TANG Xiaohan2. Simulations and Analyses of Separation Characteristic for Large Scale Flexible Fairing. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(22): 115-120.
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