王志祥1(
), 雷勇军1,2,3, 张大鹏1,2, 崔辉如4
收稿日期:2024-08-22
修回日期:2024-09-13
接受日期:2024-10-18
出版日期:2024-11-06
发布日期:2024-11-06
通讯作者:
王志祥
E-mail:wangzhixiang14@nudt.edu.cn
基金资助:
Zhixiang WANG1(
), Yongjun LEI1,2,3, Dapeng ZHANG1,2, Huiru CUI4
Received:2024-08-22
Revised:2024-09-13
Accepted:2024-10-18
Online:2024-11-06
Published:2024-11-06
Contact:
Zhixiang WANG
E-mail:wangzhixiang14@nudt.edu.cn
Supported by:摘要:
针对大型运载火箭加筋圆柱壳轻量化设计面临的混合整数变量多、耦合强、计算成本高、优化收敛性差等问题,提出了一种基于探索/开发竞争并行采样的序列近似优化方法(SAOCPS)。该方法通过建立加筋圆柱壳轴压承载能力的增广径向基函数近似模型以提高后屈曲分析效率,并基于双精英种群进化的开发采样策略挖掘潜在最优区域,提升算法局部寻优性能。根据离散-连续变量低维投影特点,确定探索样本新增水平,采用元素交换-概率跃迁相结合的排列优化方法进行均匀性改进,实现探索样本对离散-连续设计空间的均匀覆盖,提升算法全局寻优性能。利用性能增益驱动的探索/开发竞争采样机制,平衡算法对设计空间的探索/开发力度,引导高维高耗时混合整数优化过程快速收敛。在大直径大载荷加筋圆柱壳轻量化设计应用中,本文方法在初始样本数量大幅缩减90%以上时,仍获得了与其他研究工作相当的优化结果,且比经典PoF优化方法进一步减重了279.8 kg,证明了所提方法的有效性和工程适用性。
中图分类号:
王志祥, 雷勇军, 张大鹏, 崔辉如. 大型运载火箭加筋圆柱壳混合整数序列近似优化方法[J]. 航空学报, 2025, 46(10): 230189.
Zhixiang WANG, Yongjun LEI, Dapeng ZHANG, Huiru CUI. Mixed-integer sequential approximate optimization method for stiffened cylindrical shells in large launch vehicles[J]. Acta Aeronautica et Astronautica Sinica, 2025, 46(10): 230189.
表2
大直径加筋圆柱壳优化设计参数对比
| 参数 | SAOCPS | PoF | 文献[ | |
|---|---|---|---|---|
| “工”形 | “几”形 | “工”形 | “几”形 | |
| 48.83 | 55.63 | 63.59 | 50.00 | |
| 75.15 | 77.41 | 92.09 | 75.00 | |
| 2.082 | 2.165 | 2.720 | 2.010 | |
| 5.122 | 2.319 | 5.870 | 3.020 | |
| 4.850 | 4.035 | 4.010 | 4.390 | |
| 94.95 | 100.00 | 98.63 | 97.80 | |
| 14.73 | 13.90 | 14.91 | 11.10 | |
| 49.90 | 32.77 | 36.21 | 32.60 | |
| 2.29 | 3.63 | 4.06 | 3.26 | |
| 92.02 | 148.11 | 94.58 | 127.51 | |
| 2.72 | 2.01 | 6.13 | 4.25 | |
| 21.11 | 21.45 | |||
| 2.03 | 4.32 | |||
| 100 | 85 | 85 | 95 | |
| 1.41 | 1.20 | 1.41 | 27.34 | |
| 38.24 | 24.47 | 33.02 | 2.00 | |
| 2.01 | 2.01 | 2.00 | 80.00 | |
| 100.10 | 93.27 | 129.61 | 2.58 | |
| 4.24 | 2.20 | 6.04 | 404.7 | |
| 403.55 | 595.67 | 486.50 | 965.60 | |
| 1 187.10 | 1 197.90 | 1 199.60 | 1.26 | |
| 3 410 | 3 357.10 | 3 689.70 | 3 321.65 | |
| 7.02 | 7.01 | 7.02 | 7.04 | |
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