Design method of rail grinding target profile based on non-uniform rational B-spline
Design method of rail grinding target profile based on non-uniform rational B-spline
复制标题
基于非均匀有理B样条的钢轨磨削目标轮廓设计方法
DOI：
10.1177/0954409720972819
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发表时间：
2020-11
期刊：
影响因子：
--
通讯作者：
Songtao Wang
中科院分区：
文献类型：
--
作者：
Fengtao Lin;Songtao Wang
钢轨磨耗后的修磨方式对钢轨的使用寿命和维修成本有着重要的影响。目前的磨削策略是将磨损的钢轨磨削到其原始轮廓，这导致去除过量的材料并缩短钢轨的使用寿命。基于非均匀有理B样条理论（NURBS）对曲线光顺性的控制，结合钢轨轮廓的几何特征，建立了一种钢轨轮廓重构方法。以降低钢轨磨耗为目标，以材料去除量和脱轨系数为优化目标，采用优化方法设计经济打磨钢轨型面。将Archard磨耗模型、有限元接触模型和车辆-轨道耦合动力学模型相结合，可以设计出一种新的钢轨型面。结果表明，与原CN 60型相比，左、右钢轨磨损量分别减少了29.26%和31.06%。采用新的钢轨轮廓，动态性能得到改善，接触应力、疲劳指数和材料去除量减少。这种优化的钢轨打磨轮廓有助于减少钢轨磨损，保证列车运行的安全性。
The grinding strategies for worn rails have a significant influence on the service life and maintenance cost of railways. Current grinding strategies, grinding the worn rails to their original profiles, leads to excessive amount of material removed and reduction of rail service life. Based on Non-Uniform Rational B-Spline theory (NURBS), which contributes to the control of curve smoothness, a rail profile reconstruction method was established considering the geometrical characteristics of the rail profile. The design of economical grinding rail profile can be achieved by using optimization method, which regards the amount of material removed and derailment coefficient as objectives, aiming at reducing rail wear. A new rail profile can be designed by integration of Archard wear model, FE contact model and vehicle-track coupling dynamic model. The result indicated that the wear of left and right rail is reduced by 29.26% and 31.06% compared with original CN60 profile, respectively. With the new rail profile, the dynamic performance is improved, and the contact stress, fatigue index and the amount of material removed is reduced. This optimized rail grinding profile contributes to the reduction of rail wear and guarantees the safety of train operation.
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影响因子：
--
作者：
W. Zeng;Wen-sheng Qiu;Tao Ren;Wen Sun;Yue Yang
通讯作者：
W. Zeng;Wen-sheng Qiu;Tao Ren;Wen Sun;Yue Yang
影响因子：
5
作者：
Yoshihiko Sato
通讯作者：
Yoshihiko Sato
影响因子：
--
作者：
S. Iwnicki
通讯作者：
S. Iwnicki
影响因子：
3.6
作者：
I. Persson;R. Nilsson;Ulf Bik;M. Lundgren;S. Iwnicki
通讯作者：
I. Persson;R. Nilsson;Ulf Bik;M. Lundgren;S. Iwnicki
DOI：
10.1046/j.1460-2695.2002.00535.x
发表时间：
2002-10-01
影响因子：
3.7
作者：
Ekberg, A;Kabo, E;Andersson, H
通讯作者：
Andersson, H