Satellite. Sports Neutron Star Structure Layout And Dynamics Simulation Analysis

In research and development of space deploy structural design.The natural charaeteristie analysis and structural design optimization is very important. Natural charaeteristie analysis can verifies whether the structure frequency accord whit the requirements of design.Modern structural design use the CAE technology design for static and dynamic analysis,we can control zhe strength and frequency ,greatly reduce the samples and time.First,in this paper, there are two kind of structure design which the SPORT polar-orbiting satellite have, in the background of the SPORT polar-orbiting satellite.Demand for different needs, given the structure of two SPORT satellite sub-satellite design, determine the composition, selection of materials and structural types, given the layout of elements of the structure, shape and size.Each of the two design,use the CAD software of UG to design the structure of subsatellite and boom,The use of modern CAE technology to create different structures by MSC.Patran software establish subsatellite finite element analysis model,the establishment satellite's boom finite element analysis model which has zhe target of the biggest First-order frequency and the least quality.Second, use the MSC.Nastran software to analyse dynamics Simulation on the virtual prototype model which is fold and deploy,to analyse dynamics Simulation of booms.Introduction of structural optimization design theory, from the section size optimization, structural optimization, shape optimization way to start, follow the maximum extent to satisfy the design requirements, to keep the most simple of designs take full account of the design of process conditions, pay attention to the design of the economy and so many of the principles,respectively take structural optimization design for fold subsatellite model, deploy subsatellite model and the deploy subsatellite model and booms. Finally,on the optimized fold and defold subsatellite model take dynamic simulation,we can find zhe model frequency of the structure. as compared with the former frequency,verify if the optimized design of the overall structure of the subsatellite strength and stiffness can meets the design requirements.After optimization design of the satellite's booms by dynamics simulation, comparing the simulation results before optimization, verify whether the optimized model has the first-order natural frequency of the maximum and minimum quality,whether meet the boom's fundamental frequency of the initial state requirements under SPORT satellite attitude control.Analysis each Dynamics Simulation of subsatellite model fold and deploy which connect boom. From the result of the analysis,testing if the overall design and structure of subsatellite if accord whit the requirements of strength and stiffness ,test the frequency if satisfy the initial requirements of SPORT polar-orbiting satellite attitude control. The result of analysis can provide technical support for design,as well as provide satellite data for attitude control, push zhe case more and more close the application.