Stress Analysis of the Rail Joint under Wheel Load

Guta, Sisay (2014) Stress Analysis of the Rail Joint under Wheel Load. Masters thesis, Addis Ababa University.

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The main objective of this study is analysing and identifying the stresses on bolted rail joint due to the wheel load to predict and minimize failures caused. This studies use the hertz contact theory to perform the analysis for three various position of bolted rail joint on sleeper. This study covers only the stress and failure caused by the wheel load. The 3D model has done on modeling package of CATIAV5R16. Assembly model has created in assemble workbench of CATIA after individual component of joint had created on part work bench. The assembly of bolted rail joint contains rail, joint bars, bolts, nuts and washers. After the assembly is accomplished on CATIA, it was imported in to the ANSYSR14.5 to analyze the stress caused by vertical load. ANSYS solves governing differential equations by breaking the problem into small elements. The wheel structure discretized using CONTA174 element. CONTA 170 three dimensional elements is used to discretize rail. During the analysis of wheel/rail contact in ANSYS software, the parameters have been used axle load, angular velocity and gravitational acceleration. From ANSYS software simulation result when the rail joint between sleepers, the rail joint highly exposed to the equivalent, normal, shear stresses and contact pressure than the rest. For this reason, the service life of the rail joint between sleepers is small as compared to the remaining rail joint location. When the joint is on the sleeper, the stress on the rail joint is small in comparison to the rail joint between sleepers and rail joint approach to the sleeper, it will be better.

Item Type: Thesis (Masters)
Uncontrolled Keywords: rail joint, stress, pressure
Subjects: H Social Sciences > HD Industries. Land use. Labor > HD28 Management. Industrial Management
H Social Sciences > HE Transportation and Communications
T Technology > T Technology (General)
T Technology > TF Railroad engineering and operation
T Technology > TJ Mechanical engineering and machinery
T Technology > TL Motor vehicles. Aeronautics. Astronautics
Divisions: Africana
Depositing User: Andriamparany Edilbert RANOARIVONY
Date Deposited: 29 Nov 2018 09:05
Last Modified: 29 Nov 2018 09:05

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