飞机上刹车杆仿竹轻量化结构及响应面法优化
Response Surface Optimization on Bamboo-like Lightweight Structure of Aircraft Brake Rod
张霄昕 1王琦 1何国毅 1杨辉1
作者信息
- 1. 南昌航空大学飞行器工程学院,南昌 330063
- 折叠
摘要
起落架是飞机重要的部件之一,为降低结构重量和应力集中现象,结合 3D打印技术的发展,在总质量不增加和外形尺寸不突破的前提下,将原十字结构改为空心圆柱结构,并参考竹结构,给出了两种起落架上刹车杆仿生结构,采用响应面法进行了进一步的参数寻优.仿真分析结果表明:采用仿竹结构后,两种仿竹结构质量分别降低了 17%和 14.98%,最大等效应力值分别降低了57.34%和 57.90%.说明仿竹结构对降低最大等效应力具有非常好的作用.本优化方法对杆件轻量化设计具有实际意义,并可推广使用.
Abstract
The landing gear is one of the important components of the aircraft.In order to reduce the structural weight and stress concentration,combined with the development of 3D printing technology,on the premise of no increase in the total mass and no breakthrough in the overall dimension,the original cross structure is changed into a hollow cylinder structure.With reference to the bamboo structure,two bionic structures of brake rod on landing gear are designed,and further parameter optimization is carried out by using the response surface method.The simulation results show that the quality of the two bamboo-like structures is reduced by 17% and 14.98%,respectively,and the maximum equivalent stress is reduced by 57.34% and 57.90%,respectively.It shows that the imitation bamboo structure has a good effect on reducing the maximum equivalent stress.The optimization method has practical significance for the lightweight design of rod structure,and can be popularized.
关键词
结构轻量化/仿竹结构/数值仿真/响应面法/优化Key words
lightweight structure/imitation bamboo structure/numerical simulation/response surface method/optimization引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据