| The solar energy is playing a more and more important role in the development of the society, as it is a kind of clean and renewable energy. Since the tethered solar power satellite (tethered-SPS) on the geo-synchronous orbit was proposed in the last century, more and more countries have begun to study the structure successively. Though its feasibility and practicability have been confirmed, the thermal radiation in the space has an important influence on it. So, based on that, this paper establishes the finite element model of the SPS, and simulates its temperature field and thermal deformation on the geosynchronous orbit, as well as the thermal induces vibration. So, this paper provides guidance and reference for the design of the structure.Firstly, the paper introduces the environment and background of the tethered-SPS on the geo-synchronous orbit by consulting a large number of literature. Besides, the state of SPS development also is mentioned. It point out that the solar panel will be greatly influenced under the variety thermal radiation from the space.Besides, after establishing the finite modal in the software of ANSYS by APDL language, the model is imported to the FEMAP software to get the structure temperature field, which will implement the equivalent transformation of the model. After that, we use the TMG modules to get the panel temperature field when the SPS moves at the place of the vernal equinox, summer solstice, autumnal equinox and winter solstice. The temperature curve shows that the temperature field of the solar panels change greatly when SPS running around the earth, this will produce the temperature strain and will influence the attitude of the whole system.Then, due to the change in the temperature, the solar panels will produce the temperature strain. So, to calculate the degree of the displacement, we load the temperature load on the model in the ANSYS, after getting the deformation of the panel, and by comparing, we find that when the SPS runs to the place of winter solstice, whenever the solar panel moves to the place where it is perpendicular to the sunlight, the thermal deformation will be the largest. And the result of the thermal deformation will provide reference for solar panels design.Finally, the paper analyses the vibration produced by the thermal radiation. After the analysis of the thermal vibration, we plot the curves of the vibration induced by the thermal. And by changing the parameters, we study the influences of different parameters on the solar panels, as well as the change of the temperature on the vibration. |
