基于OpenMDAO的BLISS-2000多学科设计优化:流程、策略与参数研究
Multidisciplinary design optimization of BLISS-2000 based on OpenMDAO:research on process,strategy and parameters
高裕浩 1何腾武 1赵敏1
作者信息
- 1. 上海交通大学 船舶海洋与建筑工程学院,上海 200240;上海交通大学 海洋工程全国重点实验室,上海 200240
- 折叠
摘要
[目的]旨在基于OpenMDAO研究BLISS-2000 多学科设计优化方法的近似模型、一致性约束、边界更新策略对其收敛性能与优化效率的影响.[方法]首先,给出BLISS-2000 方法优化流程和边界更新策略;然后,基于OpenMDAO建立BLISS-2000 方法模型,结合数学算例和工程算例验证所建模型准确性;最后,研究近似模型准确度、一致性等式约束及约束松弛、边界更新策略对BLISS-2000 方法收敛性能与优化效率的影响.[结果]结果表明,通过提高近似模型准确度、选取适当的约束松弛因子和边界更新因子,可显著提高BLISS-2000 方法的收敛性能与优化效率,并得到基于约束松弛的BLISS-2000 方法相关参数的建议取值.[结论]研究结果可对改进BLISS-2000 方法及船舶与海洋工程装备概念设计阶段应用BLISS-2000 方法提供参考.
Abstract
[Objective]This paper aims to study the influence of the approximation model,consistency con-straints,and boundary update strategy of the BLISS-2000 multidisciplinary design optimization method on its convergence performance and optimization efficiency based on OpenMDAO.[Method]First,the optimiza-tion process and boundary update strategy of BLISS-2000 are given.A BLISS-2000 model is then established based on OpenMDAO,and its accuracy is verified by mathematical and engineering examples.Finally,the ef-fects of the approximation model's accuracy,consistency equality constraints,constraint relaxation,and boundary update strategy on the convergence performance and optimization efficiency of the model are stud-ied.[Results]The results show that improving the accuracy of the approximation model and selecting the appropriate constraint relaxation factors and boundary update factors can greatly improve the convergence per-formance and optimization efficiency of the BLISS-2000 model.At the same time,the recommended values of the relevant parameters based on constraint relaxation are obtained.[Conclusion]The results of this study can provide useful references for the improvement of the BLISS-2000 method and its application in the con-ceptual design stage of ships and marine equipment.
关键词
船舶设计/多目标优化/多学科设计优化/OpenMDAO/BLISS-2000/近似模型/边界更新策略Key words
naval architecture/multiobjective optimization/multidisciplinary design optimization/Open-MDAO/BLISS-2000/approximation model/boundary update strategy引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据