动力集中动车组车体司机室结构优化设计
Optimization Design of Cab Structure in Power Concentrated EMU
柳占宇 1于德壮 1杨帆 1李冬园 1张威 2张昭2
作者信息
- 1. 中车大连机车车辆有限公司 辽宁大连 116022
- 2. 大连理工大学工程力学系,辽宁大连 116024
- 折叠
摘要
动力集中动车组司机室结构对保证司机人员安全有重要作用,在确保结构安全的基础上,设置合理的传力路径进行结构补强,可以实现碰撞工况下的司机室角柱和防撞柱及相关结构的轻量化,对高速重载要求下的动机集中动车组设计有重要意义.采用拓扑优化方法对某型动力集中动车组车体司机室结构进行拓扑优化设计,寻求角柱和防撞柱的最优布局,以此为基础,重构司机室结构并进行尺寸优化.计算结果表明,通过拓扑优化和几何尺寸优化的一体化设计,在满足原始设计结构的设计强度的条件下,基于拓扑构型所设计的司机室结构重量明显减小,其中重构的防撞柱构型和重构的角柱构型总重量相对于初始设计减重 67.5%,减重效果明显.
Abstract
The cab structure takes the key role for the safety of driver inthe powder concentrated EMU.The structural strengthening by the design of reasonable load paths can be used for the structural weight reduction of the corner and collision pillars in the load case of collision under the condition of structural safety.This can be meaningful for designing the power concentrated EMU with heavy load and high speed.The topological optimization was used for the topology design of the cab structure in the power concentrated EMU,in which the distributions of the corner and collision pillars can be obtained.Based on the obtained re-generated structures,the geometrical size optimization is further used.Results indicate that the weight of the cab structure can be obviously reduced by integratingthe topological and geometrical optimizations under the condition of structural safety.In comparison with the initial design,the weight of the cab structure can be obviously reduced.All the weight of the new corner pillar andcollision pillar can be reduced by up to 67.5%.The weight of cab can be obviously reduced by the present integrating topological and geometrical optimization method.
关键词
动力集中动车组/拓扑优化/尺寸优化/防撞柱/角柱Key words
power concentrated EMU/topological optimization/size optimization/collision pillar/corner pillar引用本文复制引用
基金项目
辽宁省自然科学基金(2019-KF-05-07)
出版年
2024
国家科技期刊平台
NSTL
万方数据