The Dynamic Characteristics Analysis Of Satellite Solar Sail

With the increasing commitment of satellite missions,as the main power supply of satellite equipment,satellite solar panels applications are increasing.And when the satellite in orbit flight,if the solar panels by external perturbations,such as particles or cosmic wind flow,etc.,will produce vibrations,which the satellite attitude stability and spatial orientation and solar panels will have a great life span impact and may even damage the structure of the instrument.So for dynamic analysis of satellite solar panels is an important task satellite research.Some works has been done in this paper as following:This article is based on China’s " Dongfanghong Ⅲ" satellite,focus on the flexible satellite solar panels.The inherent characteristic of satellite solar panels in orbit during the flight of space deformation has been researched,and dynamic model of solar panels has been established in this paper.The dynamic behavior of solar panels in orbit space flight has been studied by mechanics analysis of many kinds of dynamic load.Firstly,the satellite solar panel has been simplified as a cantilever beam model.Theoretically calculated the natural frequencies and modals of cantilever beam with the theory calculations of structural dynamics,and the simulation results are compared with ANSYS validated modeling methods.The meshing methods of finite element and calculation methods has been verified.Next,refer to the actual materials and structure of solar panels to establish analysis model.And its modal analysis,dynamic response analysis of harmonic loads has been done too.Finally,according to the environment which the solar panels work in,the reality random load of the satellite solar panels has been analysed,and the action response analysis and spectrum analysis of these models under a random load has been finished.