Friction and wear in railway ballast stone interfaces

被引：9
|
作者：
Suhr, B. [1 ]
Butcher, T. A. [2 ]
Lewis, R. [2 ]
Six, K. [1 ]
机构：
[1] Virtual Vehicle Res GmbH, Graz, Austria
[2] Univ Sheffield, Dept Mech Engn, Sheffield, S Yorkshire, England
来源：
TRIBOLOGY INTERNATIONAL | 2020年 / 151卷
基金：
英国工程与自然科学研究理事会; 奥地利科学基金会;
关键词：
Friction measurement; Sliding friction; Contact area; Wear model; DISCRETE; BEHAVIOR; CALIBRATION; SIMULATION; CONTACT; SHAPE;
D O I：
10.1016/j.triboint.2020.106498
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Particle friction in railway ballast influences strongly the behaviour of ballasted tracks. New challenges posed on railway infrastructure increase the requirement for simulations, which need the friction coefficient as an input parameter. Measured friction coefficients of ballast stone contacts were found only in two studies, both under constant loads. In this work, two types of ballast were investigated in cyclic friction tests with incremental increase of the applied load after several cycles. Before each load increase, 3D-scans of some ballast stones allowed to calculate the contact area. Estimating the stress in the contact, the stress-dependency of the friction coefficient and wear were investigated. These experimental observations are discussed regarding their impact for friction modelling in the simulation of railway ballast.
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收藏
页数：13
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