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为了获得性能好质量轻的定向管,建立了以质量最小为目标函数,以刚强度要求为约束条件,以复合材料的铺层厚度和缠绕角为优化设计变量的复合材料定向管优化数学模型。应用Py-thon语言实现ABAQUS的二次开发,得到了复合材料定向管的参数化有限元模型。选用多岛遗传算法和序列二次规划法相结合的优化策略,基于iSIGHT优化平台建立了定向管动力学优化求解框架。优化后的复合材料定向管刚强度满足设计要求,质量减小21.9%。
In order to obtain the directional tube with good performance and light weight, a mathematical model of oriented tube optimization of composite material is set up, which takes the minimum mass as the objective function and the rigid strength requirement as the constraint condition, and the composite thickness and winding angle as the optimal design variables. The secondary development of ABAQUS was realized by Py-thon language, and the parametric finite element model of oriented tube was obtained. The optimization strategy based on multi-island genetic algorithm and sequence quadratic programming method was used to establish the optimal solution framework of directional tube dynamics based on iSIGHT optimization platform. The strength of the oriented composite tube of the optimized composite material meets the design requirements and the quality is reduced by 21.9%.