Numerical Simulation for Damping-Controlled Deployment of Z-Folded Inflatable Tube  

作　　者：Yu Li Zhan Yanan Shi Yingfeng Zhao Xiaoshun Liu Xin 

机构地区：[1]College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics [2]The 28 Research Institute of China Electronics Technology Group Corporation [3]Hongguang Airborne Equipment Co.Ltd

出　　处：《Transactions of Nanjing University of Aeronautics and Astronautics》2017年第4期420-425,共6页南京航空航天大学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.11172137);the Fund of Aeronautics Science(No.20122910001)

摘　　要：The damping-controlled deployment technology of flexible Z-folded inflatable tube is one of the key technologies of space inflatable structures.Constraint failure between couple nodes is proposed to simulate the damping-controlled deployment.And the equation of constraint failure is established.Inflation process of Z-folded tube is simulated with control volume method.Compared with uncontrolled method,it is indicated that the new method can effectively solve the disordered deployment problem of the slender Z-folded inflatable tube.By analyzing the displacement of the apical of the folded tube with different constraint forces during deployment process,the concept of effective constraint force is proposed.In the effective region of constraint force,the folded tube deploys with little retraction and fluctuation.Otherwise,The flexible folded tube would deploy disorderly or even cannot deploy.The simulation method and numerical results have a theoretical and instructive significance to the research on the space inflatable structures.The damping-controlled deployment technology of flexible Z-folded inflatable tube is one of the key technologies of space inflatable structures. Constraint failure between couple nodes is proposed to simulate the damping-controlled deployment. And the equation of constraint failure is established. Inflation process of Z-folded tube is simulated with control volume method. Compared with uncontrolled method, it is indicated that the new method can effectively solve the disordered deployment problem of the slender Z-folded inflatable tube. By analyzing the displacement of the apical of the folded tube with different constraint forces during deployment process, the concept of effective constraint force is proposed. In the effective region of constraint force, the folded tube deploys with little retraction and fluctuation. Otherwise, The flexible folded tube would deploy disorderly or even cannot deploy. The simulation method and numerical results have a theoretical and instructive significance to the research on the space inflatable structures.

关 键 词：Z-folded tubes damping-controlled inflation deployments failure of constraints 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]