Investigation of the effect of relative humidity on lateral force in rolling contact and curve squeal

Liu, Xiaogang and Meehan, Paul A. (2014) Investigation of the effect of relative humidity on lateral force in rolling contact and curve squeal. Wear, 310 1-2: 12-19. doi:10.1016/j.wear.2013.11.045


Author Liu, Xiaogang
Meehan, Paul A.
Title Investigation of the effect of relative humidity on lateral force in rolling contact and curve squeal
Journal name Wear   Check publisher's open access policy
ISSN 0043-1648
1873-2577
Publication date 2014-02-05
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.wear.2013.11.045
Open Access Status Not Open Access
Volume 310
Issue 1-2
Start page 12
End page 19
Total pages 8
Place of publication Amsterdam, The Netherlands
Publisher Elsevier BV
Language eng
Subject 3104 Condensed Matter Physics
3110 Surfaces and Interfaces
2505 Materials Chemistry
2508 Surfaces, Coatings and Films
2211 Mechanics of Materials
Abstract Curve squeal is the result of the lateral force in rolling contact of rail and wheels along curves. Recently, field measurements of wheel squeal occurrences at a site in Australia showed an increasing possibility for a squeal event to occur as the relative humidity increases. To verify these results, a new method to measure the lateral and normal force simultaneously was developed on a test rig, so as to determine the friction-creep curves. To investigate the effect of relative humidity on squeal and friction creep curves, the relative humidity inside the acoustic enclosure of test rig was adjusted under controlled conditions of 50%, 70% and 90%. The test rig results show that the lateral adhesion ratio decreases slightly with the increase of relative humidity and that squeal is more likely in high relative humidity. The modelling analysis shows that the critical creepage decreases with the increase of the relative humidity, which means negative damping occurs for lower angle of attack.
Keyword Lateral adhesion
Lateral contact damping
Relative humidity
Squeal noise
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2014 Collection
 
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