西南交通大学学报2017，Vol.52Issue(1)：141-147,7.DOI:10.3969/j.issn.0258-2724.2017.01.020
面向钢轨砂带打磨的砂带磨耗过程建模
Abrasion Process Modeling of Abrasive Belt Grinding in Rail Maintenance
摘要
Abstract
Considering the contact area state under elastic contact of curved surfaces,an abrasive belt wear process model for rail grinding was established using the Archard equation and Heltzian contact theory to investigate the influence of technological parameters on the belt service life.The curves of wear height and belt service life were calculated through numerical simulations under different grinding forces,belt speeds,running car speeds,rail surface curvature radius and average variances of grit protrusion height.The rationality of the model was proved by comparing the simulational curves with existing experimental results.Simulation analysis illustrates that the wear contour of abrasive belt surface typically presents as a half ellipsoid,and the belt service life reduces exponentially with an increase in both the contact pressure and belt speed,but rise approximate linearly with the growth of running car speed.Taking the 60 kg/m rail as an example,under the same process conditions,the belt wear for grinding the R13 segment is clearly worse than that for both R80 and R300 segments.In the range of allowable rail surface roughness,a large grit protrusion height variance would be helpful to prolonging the abrasive belt service life.关键词
钢轨打磨/砂带磨削/磨粒磨耗/赫兹接触Key words
rail grinding/abrasive belt grinding/abrasive wear/Hertzian contact分类
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王文玺,李建勇,樊文刚,何喆..面向钢轨砂带打磨的砂带磨耗过程建模[J].西南交通大学学报,2017,52(1):141-147,7.基金项目
中国铁路总公司科技研究开发计划资助项目(2015G003-G) （2015G003-G）
