Quantitative Wear Analysis of a Simulated Steel Wheel and Rail

Item

Title
Quantitative Wear Analysis of a Simulated Steel Wheel and Rail
Creator
Kumar, Sudhir
Margasahayam, Ravi
Publisher
Department of Mechanics, Mechanical and Aerospace Engineering
Date
1977
Abstract
A preliminary analytical, parametric and experimental investigation of the combined friction-creep and wear behavior of a simulated steel wheel on a rail under dry, tractive conditions is presented. This study is aimed at enhancing the understanding of the complex wheel-rail wear problem in a quantitative manner. A dimensional analysis of the various parameters influencing the friction and wear behavior of the whee-rail system for tractive rolling process has been carried out. With the aid of both the analytical and dimensional analysis, generalized expressions for interrelationship of creep, wear, normal load, hardness, toughness; roughness and time have been derived to yield wear-creep, wear roughness and other non-dimensional expressions. Both laboratory and field considerations for tangent track are included. General quantitative wear relations derived were checked with experimental data showing reasonable agreement. From the experiments, it was found that the wear of the rail is proportional to the hardness of the wheel and vice versa. Wear of the rail increases both with friction coefficients and normal loads, however, increase in rail wear due increase in friction coefficients (>0.25) is much larger than its increase due to larger axle loads, e.g. those for 75 ton cars. Wear increases significantly with creep. Roughness of wheel and rail increases with cycles of loading. Increase in roughness is usually associated with increased wear. Wear-creep, wear-roughness and hardness-toughness Pi's seem to be significant in wear analysis.
Date Issued
1977-07
Extent
86
Corporate Author
Department of Mechanics, Mechanical and Aerospace Engineering, Illinois Institute of Technology
Corporate Report Number
IIT-TRANS-77-3
Access Rights
Document is available to the public through the National Technical Information Service, Springfield, Virginia 22151
Photo Quality
incomplete
Distribution Classification
1
DTIC Record Exists
No
Report Availability
Full text available by request
Contract
DOT-FR-64228
Provenance
S. Kumar
Type
report
Format
86 pages ; 28 cm.