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Fatigue Failure Analysis on Curved Rail or Root of Addis Ababa Light Rail Transit (AALRT)

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dc.contributor.advisor Daniel, Tilahun (PhD)
dc.contributor.author Gemechu, Dugassa
dc.date.accessioned 2019-01-23T13:12:38Z
dc.date.available 2019-01-23T13:12:38Z
dc.date.issued 2017-07
dc.identifier.uri http://localhost:80/xmlui/handle/123456789/15997
dc.description.abstract The rails are the supporting parts with which the wheels are in contact. Rails, as the heart of the railway system, are subjected to very high service loads and harsh environmental conditions. Fatigue failure in rails can be initiated at the rail head, at the web and/or at the foot. The main objective of the study is analyzing fatigue on curved rail due to cyclic wheel load that causes failures and determining fatigue life of rail in Addis Ababa Light Rail Transit. The fatigue analysis on curved rail route ongoing with 3D modelling on CATIA V5 software and imported to ANSYSv16 workbench software for finite element analysis. The analysis deals with the curved rail route profile with fifty meter radius located at three places (stadium, saint lideta and autobistera) with working period during morning peak hour, day flat hour, and afternoon peak hour. During the analysis of wheel/rail contact in ANSYS software, the parameters have been used are wheel vertical load, wheel lateral load, angular velocity and gravitational acceleration. From ANSYS workbench software result at stadium during afternoon peak hour is highly exposed to the equivalent alternating stress, pressure distribution and fatigue damage than the result at saint lideta and autobistera. For this reason, the rail service life at stadium during afternoon peak hour is small as compared to the rail service life at saint lideta and autobistera curved rail route location. On the curved rail at autobistera: the equivalent alternating stress, pressure distribution and fatigue damage is small in comparison to the curved rail at stadium and saint lideta. The fatigue life will be better at autobistera. en_US
dc.language.iso en_US en_US
dc.publisher Addis Ababa University en_US
dc.subject Addis Ababa Light Rail Transit (AALRT) en_US
dc.subject Fatigue failure on curved rail en_US
dc.subject Fatigue Life en_US
dc.title Fatigue Failure Analysis on Curved Rail or Root of Addis Ababa Light Rail Transit (AALRT) en_US
dc.type Thesis en_US


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