Configuration Synthesis And Thermal Analysis Of Deployable Tensegrity Antenna

The configuration synthesis method of tensegrity structures, the heat finite elementmodeling of spatial thin-walled tube and temperature field analysis of deployabletensegrity antenna in-orbit are discussed in this paper. The main work and outcomes areas follows:1. The mathematical model of tensegrity structure configuration synthesis isestablished, and solved using the0-1mixed integer programming method. Then thetopology structures of tensegrity structure and internal stress distribution that meet therequirements of the nodes position are obtained. At last, software for tensegrity structureconfiguration synthesis is developed.2. The thermal equivalent model of spatial thin-walled tube is modeled using theregular polygon shell element. Research is done to study their equivalent relation, andaccurate temperature field of the spatial thin-walled tube is obtained. It is of greatimportance to the research of the stress-strain of the spatial thin-walled tube.3. Temperature field analysis of the tensegrity structure antenna in-orbit is done.The antenna temperature distribution is calculated with the sun in the positions of springequinox, summer solstice, autumnal equinox and winter solstice under different thermalcontrol measures. Conclusions are drawn via data comparison, providing reference tothe engineering thermal design of antenna. At last, the periodic convergence conditionsof thermal analysis of the orbit satellite are analyzed.