具有回弹复位功能易裂盖的结构设计及力学性能研究  

Structural Design and Mechanical Properties of Fissile Cover with Rebound and Reset Functions

作　　者：贾米芝 徐澧明 林楠 南博华 王坤[1] 蔡登安[1] 周光明[1] JIA Mizhi;XU Liming;LIN Nan;NAN Bohua;WANG Kun;CAIDeng’an;ZHOU Guangming(State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics&Astronautics,Nanjing 210016,Jiangsu,China;Shanghai Electro-Mechanical Engineering Institute,Shanghai 201109,China;Shanghai Aerospace Equipments Manufacturer Co.,Ltd.,Shanghai 200245,China)

机构地区：[1]南京航空航天大学机械结构力学及控制国家重点实验室,江苏南京210016 [2]上海机电工程研究所,上海201109 [3]上海航天设备制造总厂有限公司,上海200245

出　　处：《空天防御》2022年第2期8-16,共9页Air & Space Defense

基　　金：国家自然科学基金(52005256);江苏省基础研究计划(自然科学基金)资助项目(BK20190394);江苏省博士后科研资助计划项目(2020Z437);上海航天科技创新基金(SAST2019-063,SAST2020-001);江苏高校优势学科建设工程资助项目(PAPD)。

摘　　要：针对复合材料导弹发射箱盖研制领域提出的新要求,设计了一种具有回弹复位功能的分瓣顶破式复合材料易裂盖,提出了薄弱区与回弹复位功能层细观结构的设计方案,制作了易裂盖试验件并对其进行了承压和顶破试验。试验结果表明:易裂盖结构设计合理,在弹头的作用力下,盖体可由中间向法兰根部分瓣开裂,且在弹体出筒后,分瓣子盖能够实现自动回弹关盖。本文分别建立了易裂盖承压变形工况的静态有限元模型和顶破工况的动力学有限元模型,可有效预测其最大变形和顶破力,误差分别为4.08%和19.64%。基于有限元模型,分析了易裂盖本体铺层层数、不同区域加强布层数和不同功能层层数对其最大变形的影响,研究了薄弱区的损伤失效和功能区回弹复位的机理。In view of the new requirements in the field of composite material missile launch canister cover development,this paper designed a kind of split burst composite material fissile cover which has the functions of rebound and reset, and proposed a design scheme of the meso-structure of the weak zone and the functional zone of the rebound and reset. The test results showed that the structure design of the fissile cover was reasonable;the cover body could crack from the middle to the flange root part under the force of the missile nose;and the split cover could automatically rebound and close after the ejection of the missile body. In the paper, the static pressure-bearing deformation finite element model and the dynamic split burst finite element model of the fissile cover were established respectively, which can effectively predict the maximum deformation and broken force, and the errors were 4.08% and 19.64% respectively. Based on the finite element models,the effects of the number of layers of the fissile cover body, and the number of reinforced layers in different regions, and the number of different functional layers on the maximum deformation of the fissile cover were analyzed, and the mechanisms of the damage failure in the weak region and the rebound and reset in the functional region were studied.

关 键 词：易裂盖 复合材料 回弹复位 分瓣顶破 有限元分析 

分 类 号：TJ768.2[兵器科学与技术—武器系统与运用工程] TB332[一般工业技术—材料科学与工程]