Application And Research Of Topology Optimization With Optistruct

Structure optimization usually includes size optimization, shape optimization and topology optimization. The purposes of structure optimization are economical materials usage and reasonable stress distribution. Topology optimization extends the ability of engineer to shorten the design cycle. An improved structure topology could enhance the structure performance or decrease weight of it, and this lead to more benefit. So topology optimization is more important than that of size or shape optimization.Topology optimization is now a most challenging topic in the field of structural optimization. Topology optimization of continuum structure is the most challenging and difficult, as well as hot research topic in structure optimization because of difficulty to establish a good geometric model which comprising a large number of design variables, and complexity of optimization algorithm. The research to topology optimization has the count for much theory significance and the project application prospect.The main research work in this paper is as follow:The material interpolation schemes-SIMP method are deeply researched, an optimization model based on SIMP method of continuum structure is established.Carries on topology optimization analysis to some articulated landinng gear, topology optimization proceeds from the programme plans, have optimized the structure of the programme is reasonable force bearing structure.This paper first applied Optistruct soft of Altair company to topology optimization to a spatial truss in a satellite and obtained its optimum structural form through a continuum under the given constraints and load conditions. Then applied size optimization of the satellite and gained the optimum sizes. The calculation result proves that it is feasible to get the optimum structural form through a continuum's topology optimization. With the help of size optimization, the satellite's weight can be reduced obviously and its dynamic performance can be improved.