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- W2364654089 abstract "The dynamic response of a space structure consisting of thin walled pipes subjected to solar heat flux was analyzed,and then this problem was extended taking thermo-structural coupling into account and the randomness of parameters.For analyzing thermal vibration due to temperature difference in its cross section conveniently,temperature field was divided into two parts including average temperature part and disturbance temperature one,then the dynamic model considering thermo-structural coupling was set up using the finite element method.The model was solved with the approximate calculation method through alternating iterations of temperature field and dynamic response in time domain.The temperature field was solved by using the method of time difference and Newton-iteration,while the dynamic response was obtained with Newmark integral method.Starting from the solving iterative forms of each response,the computational expressions for the numerical characteristics of the temperature field and the dynamic response were derived,respectively,with the methods of moments and random factor.Through alternating iterative algorithms in each time step,the mean value and variance of the two responses in whole time domain were obtained.Finally,Hubble Space Telescope was taken as an example.Thermal flutter for a thin-walled cantilever beam due to thermo-structural coupling was showed,and the influence of the randomness of parameters on the dynamic response was also found.Monte Carlo method was used to validata the feasibility of the proposed method." @default.
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- W2364654089 date "2012-01-01" @default.
- W2364654089 modified "2023-09-28" @default.
- W2364654089 title "Randomness analysis for dynamic response of a space structure considering thermo-structural coupling" @default.
- W2364654089 hasPublicationYear "2012" @default.
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