基于ANSYS的结构拓扑优化

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针对拓扑优化技术在现实中的应用问题,将拓扑优化技术应用到自行车车架和多拱拱桥的最优化设计中。开展了各种拓扑优化方法的分析研究,建立了＂以单元材料密度为设计变量,以结构的柔顺度最小化为目标函数,体积减少百分比为约束函数＂的数学模型;通过采用商用有限元软件ANSYS中的拓扑优化设计模块对自行车车架和多拱拱桥进行了拓扑优化设计,优化结果表明所得拓扑结构清晰,并与实际的自行车车架和多拱拱桥非常相似。研究结果表明,该结构拓扑优化方法正确而有效,具有一定的工程应用前景。 In order to solve the application problems of topological optimization technology in reality, the bicycle frames and muhiple arch bridge was investigated.After the analysis of all kinds of methods of topological optimizaiton, the mathematical model that unit material density as design variables, the minimum of structural compliance as the objective function, the volume reduction percentage as the constraint function was established. The topology optimization design module of the commercial finite element software ANSYS was used to the bicycle frame and multiple arch bridge for the topology optimization design.The topological structure is clear and they are very likely to the bicycle frame and multiple arch bridge in reality. The results indicate that the method is correct and effective, it has a certain engineering application prospect.