基于自由变形的自主水下航行器壳体优化设计方法研究  

A free-form deformation optimization design approach for AUV hull shape

作　　者：张贝 张代雨 王志东[3] 吕海宁[1,2] 杨建民[1,2] ZHANG Bei;ZHANG Dai-yu;WANG Zhi-dong;LÜHai-ning;YANG Jian-min(State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240;Yazhou Bay Institute of Deepsea SCI-TECH,Shanghai Jiao Tong University,Sanya 572000;School of Ship and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003)

机构地区：[1]上海交通大学海洋工程国家重点实验室,上海200240 [2]上海交通大学三亚崖州湾深海科技研究院,海南三亚572000 [3]江苏科技大学船舶与海洋工程学院,江苏镇江212003

出　　处：《船舶力学》2022年第9期1315-1325,共11页Journal of Ship Mechanics

基　　金：国家自然科学基金资助项目(51909110);江苏省高等学校自然科学研究项目资助(19KJB570001)。

摘　　要：进行自主水下航行器(AUV)壳体优化设计时,传统壳体参数化方法变量少,导致在优化过程中不能充分探索壳体外形的变形空间,不利于求得满足性能要求的最优壳体外形。针对此问题,本文提出一种基于自由变形的AUV壳体优化设计方法。该方法基于B样条方法,建立AUV壳体的FFD参数化模型,可实现AUV壳体外形的自由变形,扩展优化空间;并针对FFD参数化模型易导致的优化设计变量多和计算量大的问题,提出一种全局参数化方法对FFD控制体进行间接变形操纵,在实现自由变形的前提下,大大减少参数化变量个数,提高优化效率。最后,分别使用传统优化设计方法和本文优化设计方法对一型AUV壳体进行优化设计,并对比分析所得的优化结果,验证了该方法的有效性。During the optimization design of AUV shell,there are few shell parameterization variables for the traditional shell parameterization method,which makes it impossible to fully explore the deformation space of the shell shape in the optimization process,and difficult to obtain the optimal shell shape that meets the performance requirements.In view of this problem,an optimization design approach for AUV hull shape based on free-form deformation(FFD)method was proposed in this paper.Firstly,based on the B-spline method,the FFD parametric model of AUV hull shape was established to realize the free-form deformation of hull shape and expand the optimization space.Secondly,aiming at the shortcoming of the FFD parametric model such as the radical increase of optimization design variables and large calculation amount,a global parametric method was proposed to control the deformation of FFD control volume indirectly,which can greatly reduce the number of parametric variables while maintaining the ability of free-form deformation,and to further improve the optimization efficiency.Finally,the traditional optimization design methods and the presented optimization design approach were both used to optimize the shape of the AUV hull,and the optimization results were compared and analyzed to verify the effectiveness of the proposed method.

关 键 词：无人水下航行器 壳体参数化 自由变形方法 轴变形方法 

分 类 号：O35[理学—流体力学]