摘要
针对传统的圆柱形壳体优化设计的局限性 ,将优化技术、模糊数学以及实数编码的加速遗传算法 (RAGA)有机结合起来 ,提出了通过建立模糊优化数学模型 ,并将其转化为普通优化模型 ,最后用 RAGA优化求解的新思路。对“T”型加肋圆柱形壳体的计算实例表明 ,这种方法不仅考虑了设计变量和约束条件的随机性和模糊性 ,进一步减轻了壳体结构质量 ,而且设计效率高 ,收敛速度快 ,能够很快给出最优解。由此可见 。
In order to resolve the limit of conventional optimization design method of cylinder shell, this paper integrated a real coding based accelerating genetic algorithm (RAGA) with optimization technique and fuzzy mathematics, presented a new method by establishing the model of fuzzy optimization mathematics, then transform it into normal optimization model, and finally resolve it with RAGA. The example of cylinder shell added 'T' rid proved that the method can not only consider the randomicity and fuzziness of design variable and restrict condition, reduce the weight of shell structure, but also has a high design efficiency, convergence speed and good global searching.
出处
《机械科学与技术》
CSCD
北大核心
2003年第S1期52-53,66,共3页
Mechanical Science and Technology for Aerospace Engineering
关键词
遗传算法
实数编码
模糊优化
圆柱形壳体
Genetic algorithm
Real coding
Fuzzy optimization
Cylinder shell