Stress Analysis & Life Assessment of Alestum Locomotive's Wheels using Analytical Techniques

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Shayannejad, Mohammad | 2009

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 40601 (45)
University: Sharif University of Technology
Department: Aerospace Engineering
Advisor(s): Adib Nazari, Saeed
Abstract:
In this thesis contact problem between wheel and rail has been studied. Also rolling contact fatige (RCF) has been studied in detail. Unlike previous studies that have focused on FEM solution, in this study the problem has been formulated based on analytical methods. Evaluating the loads in wheel-rail contact zone is necessary to find the defects. This thesis presents the evaluation of the stress field inside elastic rolling bodies with an elliptic area of contact. This kind of model can be applied to wheel-rail contact mechanics. The problem has been solved for two main models: with friction and without friction. The results have shown that shear stress reaches the maximum magnitude below the surface of contact, and this explains the presence of cracks in that place
Keywords:
Potential Function ; Stress Analysis ; Fatigue ; Contact Problem ; Wheel/Rail Contact ; Alestum

No TOC