摘要
为降低航空弹药质量,提升产品综合性能,对弹体结构进行优化设计。基于静力等效韧度原则,分析结构传力路径,应用形状优化及自由形状优化方法,改变承力位置局部结构,用铝合金材料替换高强度钢实现结构轻量化。提出适用于一般工程应用的减质量优化设计,在高应力区增加材料尺寸进行应力补偿,低应力区进行尺寸缩减,在局部结构突变位置增加倒角等措施以降低应力集中,材料替换后保证弹体结构可靠性。经优化,弹翼安装结构质量由6.6 kg降至2.6 kg,降幅为60%,效果显著。
In order to reduce the structural mass of aviation ammunition and improve the comprehensive performance of products,the lightweight optimization design of missile structure was carried out. Based on the principle of static equivalent toughness,the force transfer path of the structure was analyzed,and the shape optimization and free shape optimization design methods were applied to change the local structure of the bearing position,and the aluminum alloy material was used to replace the highstrength steel to realize the lightweight of the structure. In order to reduce the stress concentration and ensure the structural reliability of the projectile after material replacement,some measures were proposed,such as increasing the material size in the high stress area for stress compensation,reducing the size in the low stress area,and adding chamfering in the local structure mutation position. After optimization,the weight of the wing mounting structure is reduced from 6.6 kg to 2.6 kg with a decrease of 60%.
作者
徐智强
章丽丽
吴会菊
徐国徽
XU Zhiqiang;ZHANG Lili;WU Huiju;XU Guohui(Norinco Group Air Ammunition Research Institute Co.Ltd.,Harbin 150030,China)
出处
《兵器材料科学与工程》
CAS
CSCD
北大核心
2021年第5期96-102,共7页
Ordnance Material Science and Engineering
基金
国防科工局项目。
关键词
弹体结构
轻量化
结构优化
等效韧度
自由形状优化
projectile structure
lightweight
structure optimization
equivalent toughness
free shape optimization
