基于精英保留遗传算法的连续结构多约束拓扑优化

Topology optimization of continuum structure under multiple constraints using genetic algorithm with elitist strategy

采用遗传算法对应力、位移及结构约束下的连续体结构进行拓扑优化。通过在遗传算法中引入精英保留的进化策略,保证算法的收敛性,改善优化结果。优化过程中,利用精英保留遗传算法进行结构优化,通过基于ANSYS软件的有限元技术进行结构的建模和分析。算例分析表明所提出的方法是合理、有效的。该方法可用于复杂工程结构的初始设计,并能够提供多种初始设计方案。

Genetic Algorithm （GA） was served as an optimization tool for the topology optimization of continuum structure under multiple constraints. The elitist strategy was introduced into GA to improve the convergence and optimization results. During the process of optimization,GA was used to optimize the structure,while ANSYS-based finite element technique was used to model and analyze the structure. An example shows the rationality and effectiveness of the method. The method can apply to the topology optimization of complex engineering structure,and it can provide multiple initial design schemes.