Equivalent Membrane Model of Pretensioned Paraboloidal Cable Nets
Cable net structures are being developed for a variety of space deployable structures.According to the energy equivalence principle,a kind of three-directional paraboloidal cable net structure is usually equivalent to an isotropic paraboloidal membrane structure.The strain and kinetic energy of free vibration of the paraboloidal cable nets and its equivalent membrane are calculated first,and then the energy equivalence principle is adopted to obtain the equivalent parameters of membrane by equating the energies of membrane and cable nets during free vibration.Finally,taking the cable net structure used in large hoop deployable antenna as an example,the natural vibration characteristics of cable net and its equivalent membrane are analyzed.The results show that the natural frequencies and mode shapes are all in good agreement,which verifies the accuracy and effectiveness of the proposed method.
cable net membrane energy equivalence free vibration analysis
Fushou Liu Dongping Jin
State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
国际会议
南京
英文
1-4
2013-08-20（万方平台首次上网日期，不代表论文的发表时间）