电力机车底架前端结构耐撞性 拓扑优化研究

谷鹏; 齐红瑞; 朱涛; 肖守讷; 张敬科; 王小瑞

doi:10.13890/j.issn.1000-128X.2024.01.105

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电力机车底架前端结构耐撞性拓扑优化研究

铁道机车车辆 | 更新时间：2024-08-02

- 电力机车底架前端结构耐撞性拓扑优化研究
- Topology optimization study of electric locomotive underframe front-end structure crashworthiness
- 机车电传动 2024年第1期页码：31-38
- 作者机构：
  
  1.西南交通大学轨道交通运载系统全国重点实验室，四川成都 610031
  2.中车大同电力机车有限公司技术中心，山西大同 037038
- 作者简介：
  
  朱　涛（ 1984—），男，博士，副研究员，主要研究方向为机车车辆设计与理论研究；E-mail: zhutao034@swjtu.edu.cn
- 基金信息：
  
  国家自然科学基金资助项目(52172409);四川省杰出青年基金资助项目(2022JDJQ0025)
- DOI：10.13890/j.issn.1000-128X.2024.01.105
  中图分类号： U264;U260.32
- 纸质出版日期：2024-01-10，
  
  收稿日期：2023-08-14，
  
  修回日期：2023-10-26，
- 稿件说明：
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谷鹏, 齐红瑞, 朱涛, 等. 电力机车底架前端结构耐撞性拓扑优化研究[J]. 机车电传动, 2024(1): 31-38.

GU Peng, QI Hongrui, ZHU Tao, et al. Topology optimization study of electric locomotive underframe front-end structure crashworthiness[J]. Electric drive for locomotives, 2024(1): 31-38.
谷鹏, 齐红瑞, 朱涛, 等. 电力机车底架前端结构耐撞性拓扑优化研究[J]. 机车电传动, 2024(1): 31-38. DOI：10.13890/j.issn.1000-128X.2024.01.105.

GU Peng, QI Hongrui, ZHU Tao, et al. Topology optimization study of electric locomotive underframe front-end structure crashworthiness[J]. Electric drive for locomotives, 2024(1): 31-38. DOI：10.13890/j.issn.1000-128X.2024.1.105.

摘要

为提高电力机车碰撞安全性，文章以某型电力机车车体为研究对象，对底架前端部位开展耐撞性动态拓扑优化研究。首先，建立电力机车有限元模型，通过基于混合元胞自动机法的动态拓扑优化分析得到底架能量流动的主要路径；然后，结合电力机车车体结构特点，对底架前端结构进行优化设计与铝蜂窝吸能材料填充；最后，将优化前后的有限元模型进行碰撞仿真计算对比。研究结果表明：优化后的车体碰撞峰值加速度为402.56 m/s

，较优化前的车体碰撞峰值加速度663.04 m/s

降低了39.29% ，优化后碰撞峰值界面力比优化前降低 35.71% ，验证了机车耐撞性结构拓扑优化设计的合理性与有效性，提升了该型机车的耐撞性能。

Abstract

In order to improve crashworthiness of electric locomotives

this paper presents a dynamic topology optimization study aimed at improving the crashworthiness at the underframe's front end of a certain model of electric locomotives. Firstly

a finite element model of the electric locomotives was established

and the main path of energy flow in the underframe was identified by dynamic topology optimization analysis based on hybrid cellular automata. Then

according to the structural characteristics of the electric locomotive body

the front-end structure of the underframe was optimized in design and the inclusion of aluminum honeycomb energy absorbing materials. Finally

the finite element models before and after optimization were compared through the collision simulation calculation. The results reveal a significant reduction in peak acceleration

with the optimized car body at 402.56 m/s

which is 39.29% lower than value before optimization of 663.04 m /s

. Additionally

the peak interface force upon collision is reduced by 35.71% after optimization. These findings demonstrate the rationality and effectiveness of topology optimization design in improving the crashworthiness of this specific locomotive model's structures.

关键词

电力机车机车耐撞性动态拓扑优化混合元胞自动机法铝蜂窝

Keywords

electric locomotivecrashworthiness of locomotivedynamic topology optimizationhybrid cellular automataaluminum honeycomb

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