Fatigue Analysis Of Aalrt Bolted Rail Joint

The goal of this study is analyzing and identifying the stresses on bolted rail joint due to thernwheel load to predict and minimize failures caused. The three dimensional model has beenrndeveloped on modeling package of CATIAV5R16. In CATIAV5R16, different components ofrnwheel/rail assembly i.e. wheel, rail, joint, bars, nuts, bolts are created separately then allrncomponents are assembled, and create a complete model of wheel/rail assembly. Assemblyrnmodel has created in assemble workbench of CATIA after individual component of joint hadrncreated on part work bench. After the assembly is accomplished on CATIA, it was imported in tornthe ANSYS v14.5 to analyze the stress caused by vertical load. The material properties of the railrnand wheel are assumed to be same. All the material properties and boundary conditions are beingrnapplied to estimate fatigue stress. The analysis using the software ANSYS includes fatiguernstress, fatigue life, von miss stresses, shear stress and Equivalent elastic strain. These values havernbeen determined under the influence of axle load. The result obtained in this analysis is betterrnstress values for rail joint assembled by the modified geometry than the existing joint bar. Duringrnthe rail joint analysis Joint between the sleepers needed more attention than other parts, to reducernthe problem related to the rail joint.

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