DESIGN AND SIMULATION VERIFICATION OF METRO ENERGY ABSORBED STRUCTURE BASED ON ASME RT-2 STANDARD (MT)

LIU ZhaoXin; LI YongKuan; XIA DongWei

doi:10.16579/j.issn.1001.9669.2023.04.026

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DESIGN AND SIMULATION VERIFICATION OF METRO ENERGY ABSORBED STRUCTURE BASED ON ASME RT-2 STANDARD (MT)

更新时间：2023-09-25

- DESIGN AND SIMULATION VERIFICATION OF METRO ENERGY ABSORBED STRUCTURE BASED ON ASME RT-2 STANDARD (MT)
- Journal of Mechanical Strength Issue 4, Pages: 948-954(2023)
- 作者机构：
  
  1. 中车长春轨道客车股份有限公司
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2023.04.026
  CLC：
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LIU ZhaoXin, LI YongKuan, XIA DongWei. DESIGN AND SIMULATION VERIFICATION OF METRO ENERGY ABSORBED STRUCTURE BASED ON ASME RT-2 STANDARD (MT). [J]. Journal of Mechanical Strength (4):948-954(2023)
DOI：

LIU ZhaoXin, LI YongKuan, XIA DongWei. DESIGN AND SIMULATION VERIFICATION OF METRO ENERGY ABSORBED STRUCTURE BASED ON ASME RT-2 STANDARD (MT). [J]. Journal of Mechanical Strength (4):948-954(2023) DOI： 10.16579/j.issn.1001.9669.2023.04.026.

摘要

为保证列车在发生碰撞时前端次要部位尽可能吸收撞击能量，减小主体结构的碰撞损伤，轨道车辆前端设有吸能结构以提高车辆的被动安全性，保证乘客和司机的安全。首先，对比了国内外不同碰撞标准对于碰撞条件的要求，总结出各标准在撞击场景和撞击障碍物方面规定的异同。其次，选取严苛的ASME RT-2标准作为设计输入条件，设计了两种吸能结构方案，其结构主要包括压溃元件、端梁和角柱等，通过Ls-Dyna对两种方案进行了仿真计算，计算结果表明，两种方案吸收能量均超过1.22 MJ。最后，对其中一种二级压溃吸能结构进行了碰撞试验，验证了仿真计算方法的有效性，验证了该结构能够满足ASME RT-2标准的要求。

Abstract

In order to ensure the secondary part at the front end of vehicles absorb the impact energy as much as possible in case of collision, reduce the impact on main parts, and ensure the safety of passengers and drivers, the energy absorption structure is set at the front end of the vehicle to improve the passive safety. Firstly, compared different standards at home and abroad and their requirements for collision conditions. Secondly, ASME RT-2 standard is selected as the standard, two energy absorbing structures are designed respectively. Structures mainly include head girders, corner posts and crash elements. The result shows that both structures can absorb more than 1.22 MJ of energy through the simulation by Ls-Dyna. At last, energy absorbing structures which has two energy absorb stages is tested to verify the reliability of the simulation results, and it is proved that the structure can meet the requirements of ASME RT-2.

关键词

轨道车辆吸能结构防撞性有限元分析被动安全

Keywords

Railway vehicleAbsorbing energy structureCrash worthinessFinite element analysisPassive safety

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