某共架发射装置结构设计与静力学仿真分析

为满足2种不同型号导弹基于同一发射装置实现共架发射的设计需求,从机械适配性的角度提出了共架发射装置机械结构的设计方案; 构建了主要结构件的物理模型,并开展装配体干涉检查; 采用有限元分析方法,研究了3种典型混装方案下全车载荷的分布情况; 选取最为恶劣的负载方案,对比分析了起落架水平与竖直2种工况时车架与副车架的等效应力分布与结构变形情况。结果表明:3种混装方案下的载荷分布情况差别不大,各车轴所承受负载大致按照5:4:5:6的比例分布; 副车架主体结构与耳轴装置连接处是车体应力最集中、变形量最大的区域,其结构强度满足设计要求。本文提出的设计思路与仿真结果可为同类型产品的设计提供一定的借鉴与参考。

Structural Design and Statics Simulation Analysis of a Common-frame Launcher

In order to satisfy the requirements of using the same launcher for two different types of missiles to achieve a common-frame launch,a design scheme for the mechanical structure of the common-frame launcher was proposed base on the perspective of mechanical adaptability. The physical model of the main structural parts of the common-frame launch were constructed,and the assembly interference inspection was carried out. Finite element method was used to study the load distribution of the whole vehicle under three typical mixed loading schemes. The equivalent stress distribution and structural deformation of the frame and the sub-frame of the horizontal and vertical landing gears were compared and analyzed under the worst load scheme condition. The results show that there is little difference in the load distribution between the three mixed installation schemes. The load on each axle is roughly distributed according to the ratio of 5:4:5:6. The largest stress and deformation of the vehicle,which lays within the design requirements,locates on the connection between the main structure of the subframe and the trunnion device. The design ideas and simulation results presented in this paper provides a certain reference value for the design of the similar products.