Research on Time-varying Contact Behavior and Simulation for Waved Rail Surface Grinding by Abrasive Belt

被引：5

作者：

Fan W. ^{[1
,2
]}

Cheng J. ^{[1
,2
]}

Lü H. ^{[1
,2
]}

Li J. ^{[1
,2
]}

Song X. ^{[3
]}

机构：

[1] School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing

[2] Key Laboratory of Vehicle Advanced Manufacturing, Measuring and Control Technology, Ministry of Education, Beijing Jiaotong University, Beijing

[3] Railway Engineering Research Institute, China Academy of Railway Sciences, Beijing

来源：

Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2018年 / 54卷 / 04期

关键词：

Abrasive belt; Contact; Rail grinding; Simulation;

D O I：

10.3901/JME.2018.04.087

中图分类号：

TG506 [金属切削加工工艺];

学科分类号：

摘要：

Due to the complex and varied load impact, the longitudinal rail surface tends to form the wavy irregularity with certain length and amplitude, resulting that the equivalent curvature of rail surface and normal contact stress of the contact area in the process of grinding operation change dynamically. For this purpose, the basic contact characteristic for the waved rail surface grinding by abrasive belt is analyzed. Based on the Hertz contact theory, the macro time-varying contact theory model involved with time, grinding pressure, feed speed, diameter and rubber layer thickness of contact wheel is built, by which the more practical contact area form and stress distribution at any time are revealed. The theory and finite element simulation comparison analysis for the three typical different moments (close to the peak of wave, the trough of wave and the horizontal position respectively) is implemented. Results show that the theoretical calculation data and the simulation data agree well, which verifies correctness and validity of the proposed theory model. © 2018 Journal of Mechanical Engineering.

引用

页码：87 / 92

页数：5

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