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结构拓扑及形状退火算法(STSA)用于桁架结构拓扑优化设计,其优化特点为注重结构构型的改变而较少考虑结构的力学性能,而针对既定几何构型的桁架结构截面优化,满应力准则法(FSD)具有明显优势,因此,将其引入退火历程改进STSA。提出结构几何构型状态相对稳定判别方法,并以结构构型状态相对稳定作为引入FSD的最佳时机形成杂交算法。算例分析表明:该改进智能算法使寻优搜索过程更为稳定,其表现为搜索效率、鲁棒性和最优解均得以改善。
Structural Topology and Shape Annealing Algorithm (STSA) is applied to topology optimization design of truss structures. The optimization features of the truss structure optimization are to pay less attention to the mechanical properties of the structure, while optimizing the cross-section of the truss structure for a given geometry, The Code of Conduct (FSD) has obvious advantages, therefore, it is introduced into the annealing process to improve STSA. The method of relative stability of the geometric configuration of the structure is proposed, and the relative stability of the configuration state is taken as the best time to introduce the FSD to form the hybridization algorithm. The case study shows that this improved intelligent algorithm can make the search process more stable, and its performance is that the search efficiency, robustness and optimal solution are all improved.