轨道车辆膨胀管式吸能元件吸能特性分析

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英文篇名：RESEARCH ON THE ENERGY ABSORPTION CHARACTERISTICS OF EXPANSION TUBE ENERGY ABSORBING ELEMENTS FOR RAIL VEHICLES 作者：贺世忠 ; 黄科 英文作者：HE ShiZhong;HUANG Ke;CRRC Zhuzhou Locomotive Co.,Ltd;Shenzhen Cansinga Technology Co.,Ltd; 关键词：膨胀管式吸能元件 ; 准静态压缩 ; 动态冲击 ; 吸能特性 英文关键词：Expansion tube energy absorbing element;;Quasi-static compression;;Dynamic impact;;Energy absorption characteristics 中文刊名：JXQD 英文刊名：Journal of Mechanical Strength 机构：中车株洲电力机车有限公司;深圳市乾行达科技有限公司; 出版日期：2019-08-05 出版单位：机械强度 年：2019 期：v.41;No.204 语种：中文; 页：JXQD201904038 页数：6 CN：04 ISSN：41-1134/TH 分类号：247-252

摘要

以膨胀管式吸能元件为研究对象,通过全自动电液伺服压力机和大型落锤冲击试验机,对9个样件进行了18次试验。基于试验数据和数值模拟结果,分别研究了壁厚、锥头外径、冲击速度这三个参数对吸能元件吸能特性的影响。试验结果表明:膨胀管式吸能元件对速度冲击不敏感,落锤冲击下吸能元件的平稳缓冲力与准静态压缩时平稳缓冲力的比值约为0.96～0.98;当锥头外径一定时,吸能元件缓冲力与膨胀管壁厚基本成线性关系;当膨胀管壁厚一定时,吸能元件缓冲力与锥头外径近似成线性关系,且随着锥头外径的增加,缓冲力增加量有减小的趋势。为膨胀管式吸能元件的设计提供了依据。
        In this paper, the expansion tube type energy absorbing element was taken as the research object, and 9 samples were tested by automatic electro-hydraulic servo press and large drop hammer impact tester. Based on the experimental data and numerical simulation results, the effects of wall thickness, cone outer diameter and impact velocity on the energy absorption characteristics of energy absorbing components were studied. The test results show that the expansion tube type energy absorbing element is not sensitive to the impact speed. The ratio of the smooth crash force of the energy absorbing element under the drop hammer impact to the smooth crash force of the quasi-static compression is about 0.96～0.98; when the outer diameter of the cone is constant, the force of the energy absorbing element is substantially linear with the wall thickness of the expansion tube; when the wall thickness of the expansion tube is constant, the force of the energy absorbing element is approximately linear with the outer diameter of the cone, and with the outer diameter of the the cone increases, the amount of increase in the force tends to decrease. This paper provides a basis for the design of the expansion tube type energy absorbing element.

引文

[1] 王贵久.轨道列车被动防护装置及应用[J].机械工程师,2016(12):202-205.WANG GuiJiu.Passive protection device for rail trains and its application[J].Mechanical Engineer,2016(12):202-205 (In Chinese).
    [2] WonMokChoi,TaeSu Kwon,HyunSung Jung,et al.Influence of impact velocity on energy absorption characteristics and friction coefficient of expansion tube[J].International Journal of Crashworthiness,2012,17(6):621-629.
    [3] Seibi A C,Barsoum I,Molki A.Experimental and Numerical Study of Expanded Aluminum and Steel Tubes[J].Procedia Engineering,2011,10(7):3049-3055.
    [4] 马彦婷.胀管式缓冲器吸能特性及优化设计研究[D].秦皇岛:燕山大学,2014:18-22.MA YanTing.Study on energy absorption characteristics and optimization design of expanded tube buffer[D].Qinhuangdao:Yanshan University,2014,18-22 (In Chinese).
    [5] 张巍.轻质薄壁金属结构冲击吸能性与数值研究[D].大连:大连理工大学,2008:13-17.ZHANG Wei.Impact energy absorption and numerical study of lightweight thin-walled metal structures[D].Dalian:Dalian University of Technology,2008:13-17 (In Chinese).
    [6] 徐龙江,雷君相,高贵杰.变径管与薄壁圆管轴向压缩过程研究[J].机械工程与自动化,2015(3):137-138.XU LongJiang,LEI JunXiang,GAO GuiJie.Study on Axial Compression Process of Reducer and Thin Wall Tube[J].Mechanical Engineering and Automation,2015(3):137-138 (In Chinese).
    [7] 薛贵林,隋允康,杜家政.薄壁管轴向冲击的数值模拟与吸能优化[J].机械强度,2010,32(6):9-13.XUE GuiLin,SUI YunKang,DU JiaZheng.Numerical Simulation and Energy Absorption Optimization of Axial Impact of Thin-walled Tubes[J].Journal of Mechanical Strength,2010,32(6):9-13 (In Chinese).