摘要
空铁作为新型交通方式得到了迅速发展,为实现空铁线路中Y形立柱金属结构的轻量化设计,对线路中的Y形立柱进行了参数化建模,并充分考虑其结构刚度、强度及支腿稳定性对线路安全性的影响,利用ANSYS有限元分析软件分别运用零阶优化方法与多层优化设计方法对Y形立柱金属结构进行优化设计。由优化结果可知,在满足设计要求下,与优化前相比采用零阶优化方法与多层优化设计方法的金属结构重量分别减轻了11.3%和13.8%,在支腿稳定性校核中分别降低了12.1%和24.4%,使结构更加趋于安全。综上所述,多层优化设计方法更适合对Y型立柱进行优化,基本满足降低金属结构重量,提高支腿稳定性的要求。
As a new mode of transportation,air rail has been rapidly developed.In order to realize the lightweight design of the metal structure of the Y-shaped pillars in the air-rail lines,the Y-shaped pillars in the lines were parametrically modeled and their structural rigidity,strength and outrigger stability were fully considered.For the impact on line safety,ANSYS finite element analysis software was used to optimize the design of the Y-shaped column metal structure using the zero-order optimization method and the multi-layer optimization design method,respectively.According to the optimization results,under the design requirements,the weight ratio of the metal structure using zero-order optimization and multi-layer optimization was reduced by 11.3%and 13.8%,respectively,and the stability of the outriggers was checked during the zero-order optimization and multi-layer optimization.Before the optimization of China-Belgium,the reduction was 12.1%and 24.4%respectively,making the structure more secure.In summary,the multi-layer optimization design method is more suitable for optimizing the Y-shaped column,and basically meets the requirements of reducing the weight of the metal structure and improving the stability of the outriggers.
作者
吴照奇
程文明
张军
李银启
Wu Zhaoqi;Cheng Wenming;Zhang Jun;Li Yinqi(School of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031,China;Key Laboratory of Rail Transit Operations,Sichuan Province,Chengdu 610031,Sichuan,China)
出处
《现代制造工程》
CSCD
北大核心
2020年第5期150-154,共5页
Modern Manufacturing Engineering
基金
国家自然科学基金资助项目(51675450)。
关键词
空铁
Y形立柱
金属结构
参数化
稳定性
多层优化
air rail
metal structure
Y-shaped pillar
parametrically
stability
multi-layer optimization
