巡飞弹载光电关键结构拓扑优化设计方法  

Topology optimization method for key structures of electro-optic systems of loitering munition

作　　者：刘虎 朱镭[1] 吴妍 高瑜 闫伟亮[1] 崔凯 Liu Hu;Zhu Lei;Wu Yan;Gao Yu;Yan Weiliang;Cui Kai(Xi’an Institute of Applied Optics,Xi’an 710065,China)

机构地区：[1]西安应用光学研究所,陕西西安710065

出　　处：《红外与激光工程》2023年第5期288-295,共8页Infrared and Laser Engineering

摘　　要：伴随巡飞弹这一新型武器系统的快速发展,巡飞弹载光电载荷设计过程中关于小型化、轻量化、抗过载等多种要求的设计矛盾日益突出。为解决巡飞弹载光电系统小型化轻量化前提下的高效承载问题,建立了一种基于拓扑优化的巡飞弹载光电关键结构设计方法。该方法以结构低阶模态频率和过载工况下的结构柔顺度为设计约束,以质量最小为目标,建立了基于变密度法的拓扑优化设计模型,进而利用Altair HyperWorks软件求解得到关键结构的拓扑布局方案,之后综合弹载光电系统功能要求和零件加工工艺等要求,利用UG软件对拓扑优化结果进行几何模型重构并开展校核分析,最终完成关键结构的优化设计方案。在应用算例中,首先对某巡飞弹载光电关键结构零件光具座的经验设计方案进行了分析,然后利用该拓扑优化设计方法,在主要力学性能保持不变甚至部分性能有所提升的前提下,将该光具座结构成功减重22.4%,有效提高了该巡飞弹载光电系统的轻量化水平和结构承载效能,满足了系统设计要求,同时也表明了该优化设计方法的有效性和实用性,具有良好的推广性。Objective The electro-optic system is an important component of loitering munition.With the rapid development of loitering munition in recent years,the electro-optic systems of loitering munition are expected to be more compact,light,and with more excellent performance.Therefore,advanced design methods are urgently needed to solve the above problems in the electro-optic system design.In order to meet the multiple requirements of loitering munition,an effective design method for key structures of electro-optic systems based on topology optimization was proposed.Methods The advanced topology optimization method was employed to raise the design standard of electro-optic systems.Specifically,the stiffness under acceleration conditions in X,Y,Z directions and the first modal frequency were all considered as the optimization design constraints,and mass minimization of the design structure of electro-optic systems of loitering munition was taken as the optimization objective function in the proposed topology optimization method.The variable density method was employed to establish the topology optimization model.The optimized topology layout of the electro-optic systems structure can be obtained by solving the topology optimization model with the help of Altair HyperWorks software,then it would be used to reconstruct the geometric models based on production technology with the software of Unigraphics NX.In the next step,the reconstruction model would be analyzed to confirm if the optimized design could meet all the requirements.Results and Discussions As the key structure of electro-optic systems of the loitering munition,the optical bench was analyzed and optimized to improve the design performance using the proposed method.In this typical example,the topology optimized result of optical bench was obtained(Fig.5)and reconstructed(Fig.7).Then the modal analysis(Fig.8)and overload analysis(Fig.9)were executed to verify the performance of optimized reconstructed optical bench.The result showed that the mass of optical ben

关 键 词：拓扑优化 巡飞弹 光电系统 光具座 

分 类 号：TJ03[兵器科学与技术—兵器发射理论与技术]