基于车轮磨耗寿命预测的轨道参数研究  

Parametric study of the railway based on wheel wear lifetime prediction

作　　者：丁军君[1] 李芾[1] 周张义[1] 黄运华[1] 孙树磊[1] 

机构地区：[1]西南交通大学机械工程学院,四川成都610031

出　　处：《铁道科学与工程学报》2013年第4期13-18,共6页Journal of Railway Science and Engineering

基　　金：国家"863"计划项目(2008AA030706);中央高校基本科研业务费专项资金资助项目(SWJTU12CX041)

摘　　要：为研究轨道参数对车轮磨耗寿命的影响,以C80型货车为例在SIMPACK软件中建立车辆-轨道动力学模型,利用傅里叶逆变换将轨道不平顺的功率谱密度从频域转换为时域;基于半赫兹接触理论、FASTSIM算法和Zobory磨耗模型在MATLAB中编制车轮磨耗仿真程序,分析轨道曲线半径、轨距、钢轨轨底坡、钢轨型面、轨道不平顺和轮轨摩擦因数对车轮磨耗的影响。计算结果表明:曲线半径从400 m增加到2 000 m后,段修磨耗寿命增加5.1倍;轮缘磨耗减小13.4倍;当轨距从1 430 mm增加到1 435 mm和1 440 mm时,磨耗寿命分别增加了12.6%和27.5%;轨底坡从1/20减小为1/30,1/40和1/50时,段修磨耗寿命分别增加3.7%,7.4%和6.9%;采用CN75钢轨和UIC60时的磨耗寿命较CN60钢轨分别增加20.1%和13.9%;五级谱、六级谱和三大干线谱时磨耗寿命较四级谱时分别增加21.4%,35.9%和26.0%;轮轨摩擦系数为0.25、0.4和0.55时,磨耗寿命较摩擦因数为0.1分别减少24.2%,24.8%和22.3%。In order to study the influence of railway＇ s parameters on wheel wear, C80 freight car＇ s dynamical model was built in SIMPACK software, and the power spectrum density of track irregularity was transformed from frequency - domain to time - domain by inverse fourier transform, Program of wheel wear simulation was developed in MATLAB based on wheel/rail semi -Hertzian contact theory, FASTSIM algorithm and Zobory＇ s wear model, and the effects of curve radius, rail gauge, rail cant, rail profile, track irregularity, and wheel/rail fric- tion coefficient on wheel wear were analyzed. The results indicate that when curve radius increases from 400 m to 2 000 m, the wheel wear lifetime increases 5.1 times and flange wear reduced by 13.4 times; When rail gauge increases from 1 430 mm to 1 435 mm and 1 440 mm, the wheel wear lifetime increases by 12.6% and 27.5%, respectively. When rail cant decreases from 1/20 to 1/30, 1/40 and 1/50, the wheel wear lifetime increases by 3.7%, 7.4% and 6. 9%, respectively. When using CN75 and UIC60 rail profile, the wheel wear lifetime is 20.1% and 13.9% larger than CN60, respectively. The Wheel wear lifetime with America five grade railway, America six grade railway and China mainline railway is 21.4% ,35.9% and 26.0% larger than America four grade railway, respectively. When the friction coefficient is 0.25, 0.4 and 0.55, the wheel wear lifetime is 24. 2%, 24.8% and 22.3% shorter than that With friction coefficient being 0.1, respectively.

关 键 词：车轮磨耗 半赫兹接触 曲线半径 轨距 钢轨轨底坡 钢轨型面 轨道不平顺 轮轨摩擦因数 

分 类 号：U260[机械工程—车辆工程]