Design Optimization and Fatigue Analysis of Indian Railway Draft Gear Housing |
Author(s): |
Sanjeev Pujari , DON BOSCO INSTITUTE OF TECHNOLOGY,BANGALORE; Sharanabasappa, DBIT,BANGALORE |
Keywords: |
Draft Gear Housing, Fatigue Life, Multiple Loading Conditions, S-N Curve, Etc |
Abstract |
The draft gear housing is used to connect railway cars. Hence it is continuous subjected to buff and drag forces. These forces cause the failure of draft gear frequently due to fatigue loading. This work aims in analysing the draft gear housing assembly under service load conditions and finding the stresses, number of cycles to failure respectively. And also finding the more stress concentration regions and studying the effect of these on elements with duration. Finding and analyzing the reason for failure of these components and finding the corrective measures by modifying design to required extent. If the design is failing under the service load (2500kN, 2000kN, 1500kN) conditions, design needs to be modified and improve the fatigue life of the component by understanding the stress concentration zone, load distribution etc. There are two types design modification of the component i.e. Without undercut draft gear housing (at load 2500kN, 2000kN, 1500kN) and With undercut draft gear housing (at load 1500kN), after geometry modifications to reduce the stress levels and finally comparing the FEA results with a analytical calculated values to validate and also comparison a S-N curve for without undercut and with undercut of a draft gear housing and find the number of cycles. CATIA V5 used for the modelling, HYPERMESH is used for meshing, ABAQUS is used for analysis and FE-safe is used for finding the fatigue life of component. |
Other Details |
Paper ID: IJSRDV3I60160 Published in: Volume : 3, Issue : 6 Publication Date: 01/09/2015 Page(s): 186-191 |
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