Abstract：The dynamic response for space structures consisting of thin walled pipe which are subjected to solar heat flux has been analyzed, and then this problem has been developed taking into account the thermo-structural coupling and the randomness of parameters. For analyzing thermal vibration due to temperature difference in the cross section conveniently, temperature field is divided into two parts including average temperature and disturbance temperature, then the dynamic model considering thermo-structural coupling is set up using the finite element method. The model can be solved by the approximate calculation method through alternating iterative between temperature field and dynamic response in the time domain. Temperature field is solved by using the method of time integral and Newton-iteration, while dynamic response can be found through Newmark integral method. Starting from the solving iterative format of each response, the computational expressions for the numerical characteristics of temperature field and dynamic response are derived, respectively, by the method of moments and random factor. Through the alternate iterative algorithm in each time step, the mean value and variance of response in whole time domain are obtained. Finally, Hubble Space Telescope is taken as an example. Thermal flutter for thin-walled cantilever beam due to thermo-structural coupling is showed, and the influence of dynamic response due to the randomness of parameters also be found, through comparing with the Monte Carlo method, validating the feasibility of the method in this paper.
阎彬;陈建军;马洪波;靳红玲. 空间结构在考虑热-结构耦合关系下的动力响应随机性分析[J]. , 2012, 31(18): 115-121.
Yan Bin Chen Jian-jun Ma Hong-bo Jin Hong-ling. Randomness Analysis of Space Structures Considering Thermo-structural Coupling. , 2012, 31(18): 115-121.
2012, Vol. 31 
