Influences of Material on Surface Damage at Wheel/Rail Contact
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Date
2016-06
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Addis Ababa University
Abstract
The paper will study the influence of material on surface damage on the wheel - rail materials
The study begins with identifying basic criteria to select an appropriate steel materials for wheel
and rail among different alternatives. The basic criteria are cost, material compositions,
mechanical properties such as tensile strength, proof load, fatigue strength, toughness by using the
criteria two pair of wheel- rail material selected (AS4140-V1657) and (C74-U75V) comparing
with AALRT wheel - rail material (CL60&U71MN)
Next analyzing and identifying the stresses on the wheel –rail contact due to the load to predict
and minimize failures caused. the 3D model has done on modeling package of CATIAV5R16.
Assembly model has created in assemble workbench of CATIA after individual wheel and rail
had created on part work bench after the assembly is accomplished on CATIA. it was imported in
to the ANSYSR14.5 to analyze the stress caused by vertical load. During the analysis of
wheel/rail contact in ANSYS software, the parameters have been used axle load, displacement,
heat fulx, heat convection.
From ANSYS software simulation the results obtained for the one wheels-rail contact show that,
(AS4140&V1657) has excellent strength, toughness and good resistance to thermal damage due
to better hardness than (CL60-U71MN ) &(C74&U75V). Therefore, the (AS4140&V1657) steel
materials can be applied to wheel - rail in the railway systems.
Description
Keywords
Surface Damage, Wheel/Rail Contact, Material