Optimization Design of Main Energy-absorbing Structure Fixed on the Cab End of Urban Rail Vehicles

Li LIU; Zhe XU; Feng GAO

doi:10.13890/j.issn.1000-128x.2020.01.121

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Optimization Design of Main Energy-absorbing Structure Fixed on the Cab End of Urban Rail Vehicles

Urban Rail & Vehicle | 更新时间：2021-12-10

- Optimization Design of Main Energy-absorbing Structure Fixed on the Cab End of Urban Rail Vehicles
- Electric Drive for Locomotives Issue 1, Pages: 139-143(2020)
- 作者机构：
  
  1.中车唐山机车车辆有限公司　技术研究中心，河北　唐山　063035
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128x.2020.01.121
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Li LIU, Zhe XU, Feng GAO. Optimization Design of Main Energy-absorbing Structure Fixed on the Cab End of Urban Rail Vehicles. [J]. Electric Drive for Locomotives (1):139-143(2020)
DOI：

Li LIU, Zhe XU, Feng GAO. Optimization Design of Main Energy-absorbing Structure Fixed on the Cab End of Urban Rail Vehicles. [J]. Electric Drive for Locomotives (1):139-143(2020) DOI： 10.13890/j.issn.1000-128x.2020.01.121.

摘要

为了提高城轨车辆司机室端部主吸能结构的吸能性能，采用仿真分析的方法对底架端梁和吸能结构的板材厚度进行了优化设计。考虑优化部位对吸能量的影响，建立某城轨车辆司机室车与司机室车以相对速度25 km/h的正撞模型，通过碰撞分析计算得到了结构优化前后的吸能量及车体不发生压溃的最大撞击速度。研究结果表明：提高底架端梁结构的刚度，减小主吸能结构的板材厚度能够满足司机室端部吸能系统的顺序可控变形规律，其吸能性能也得到提升，为主吸能结构的优化设计提供了理论参考。

Abstract

In order to improve the energy-absorbing performance of the main energy-absorbing structure at the cab end of the urban rail vehicles, the underframe end sill and the sheet thickness of the main energy-absorbing structure were optimized by means of simulation analysis. Considering the influence of optimal location on energy absorption, the collision model of cab car versus cab car modal of one urban rail vehicle with a relative velocity of 25 km/h was developed. The maximum impact velocity without crushing and the energy absorption before and after structural optimization were obtained by collision analysis and calculation. The results showed that increasing the stiffness of the underframe end sill and reducing the sheet thickness of the main energy-absorbing structure can satisfy the orderly controllable deformation law of the cab end energy-absorbing system, as well as the energy-absorbing performance can be improved, which provided a theoretical reference for the optimization design of the main energy-absorbing structure.

关键词

城轨车辆碰撞吸能结构吸能性能仿真分析有限元模型

Keywords

urban rail vehiclecrashenergy-absorbing structureenergy-absorbing performancesimulation analysisfinite element model

references

张乐乐, 张啸雨, 崔进, 等. 地铁头车车体耐撞性仿真分析[J]. 铁道学报, 2012, 34(3): 22-27.

杨慧芳. CRH3动车组被动安全性和耐撞性优化研究[D]. 大连: 大连交通大学, 2010: 1-20.

刘金朝, 房加至, 王成国, 等. 铁道客车大变形仿真研究[J]. 中国铁道科学, 2004, 25(6): 1-8.

姚松, 田红旗, 高广军. 显式有限元法在车辆耐撞性研究中的应用[J]. 交通运输工程学报, 2003, 3(1): 13-16.

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