基于变密度法的武器站塔台发射支架拓扑优化  

Topology optimization of the launching bracket for weaponstation towers based on the variable density method

作　　者：王端奇 解志坚[1] 杨臻[1] 郁卫星 WANG Duanqi;XIE Zhijian;YANG Zhen;YU Weixing(School of Mechanical and Electrical Engineering,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学机电工程学院,太原030051

出　　处：《兵器装备工程学报》2023年第3期60-66,共7页Journal of Ordnance Equipment Engineering

基　　金：166项目(222-CXCY-M116-01-02-02)。

摘　　要：武器站塔台发射支架是发射装置的重要承力构件之一,其强度与刚度对于遥控武器站机动性和射击稳定性至关重要。本文中对于武器站塔台发射支架,在保证其结构安全性和稳定性的前提下进行拓扑优化。通过行军战斗中的过载和发射状态对支架的后座多种工况进行受力分析,基于变密度法设置挤压、最小尺寸、最大尺寸、体分比等约束条件对该结构拓扑优化。根据优化结果指导,重新对发射支架进行结构设计,在塔台左右耳轴重设3根受力杆,简化耳轴盒式结构,设置加强筋,并进行有限元强度校核。分析有限元结构,与原有支架相对比,拓扑优化后的支架质量减轻10.8%;其中在45°工况下,刚度提高了32%,强度提高了45%,其他工况下刚度强度均有不同程度提升,这对于武器站的轻量化与提高武器精度均具有重要意义。A launching bracket for a weapon station tower is one of the most important load-bearing components of the launching device,and its strength and stiffness are critical to maneuverability and shooting stability of a remote weapon station.In this paper,the topology optimization of alaunching bracket for a weapon station tower is carried out on the premise of ensuring its structural safety and stability.Through the overloadand launch status in a march battle,the stress of the bracket backseat is analyzed under various working conditions.Based on the variable density method,the structural topology is optimized by setting constraints as extrusion,minimum size,maximum size and volume fraction ratio.According to the guidance of the optimization results,the structural design of the launching bracket is re-carried out.Three stress bars are reset on the left and right trunnions of the tower,the trunnion box structure is simplified,and the stiffeners are set to conduct finite element strength check.The finite element structure is then analyzed.Compared with the original bracket,the mass of the bracket after topology optimization reduces by 10.8%,among which the stiffness increases by 32%and the strength increases by 45%under the 45°working condition;and under other working conditions,stiffness and strength improve to a varying degrees,which is of great significance to the lightweight of weapon stations and the improvement of weapon accuracy.

关 键 词：拓扑优化 变密度法 武器站 发射支架 轻量化 

分 类 号：TJ02[兵器科学与技术—兵器发射理论与技术]