基于遗传算法的环肋圆柱壳结构优化设计

Optimization design of ring stiffened cylindrical shell structure based on genetic algorithm

本文对某潜器的环肋圆柱耐压壳结构开展以减重为目标的优化设计,通过使用遗传优化算法,以环肋圆柱壳结构中的肋骨尺寸、肋骨间距及壳体厚度作为优化设计变量,在强度和稳定性满足的约束条件下,得出优化后重量较轻的设计方案,同时结合理论和数值方法校核该方案下强度和稳定性,以验证方案有效性。研究结果表明,优化后理论与数值计算得出强度与稳定性符合规范要求,优化后环肋圆柱壳结构重量得到有效降低,该研究方法可为今后类似结构物优化设计提供参考。

In this paper,the optimization design aiming at weight reduction is carried out for the structure of a submersible.By using the genetic optimization algorithm,the size,spacing and thickness of the ribs in the structure are taken as the optimization design variables.Meeting the constraint conditions,the light weight design scheme is obtained after optimization.At the same time,the strength and stability of the scheme are checked by combining theory and numerical methods,to verify the effectiveness of the scheme.The research results show that the strength and stability obtained from the theoretical and numerical calculations after optimization meet the requirements of the specification,and the weight of the structure is effectively reduced after optimization.This research method can provide a reference for the optimization design of similar structures in the future.