Friday 21 May 2010

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Transactions: WSEAS TRANSACTIONS ON APPLIED AND THEORETICAL MECHANICS
Transactions ID Number: 89-836
Full Name: Mircea Nicoara
Position: Associate Professor
Age: ON
Sex: Male
Address: POILTEHNICA University, Fac. Mecanica IMF, Bd. M. Viteazul 1, 300222 Timisoara
Country: ROMANIA
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E-mail address: mircea.nicoara@mec.upt.ro
Other E-mails: mnicoara@gmail.com
Title of the Paper: On The Influence of Residual Stresses on Fatigue Fracture of Railway Axles
Authors as they appear in the Paper: Aurel Raduta, Cosmin Locovei, Mircea Nicoara, Laurentiu Roland Cucuruz
Email addresses of all the authors: aurel.raduta@mec.upt.ro,cosmin.locovei@mec.upt.ro,mircea.nicoara@mec.upt.ro,roland.cucuruz@mec.upt.ro
Number of paper pages: 11
Abstract: Influence of residual stresses on the fatigue propagation of cracks represents a major concern for important components subject to complex loading. The purpose of present research is to numerically predict the lifetime of axles used for railway tank wagons in various theoretical conditions. The developed procedure is based on both calculating residual thermal stresses by mean of finite element method, and the number of cycles to fracture, using the closed form solution of NASGRO equation for fatigue. Calculations of fatigue resistance are based on fatigue crack development starting from an initial crack detectable by means of non-destructive testing. The numerical prediction of number of cycles (or kilometers) to fracture for axles belonging to railway tank wagons has proved the deep negative impact of residual thermal stresses introduced by poorly controlled heat treatments or other processing procedures.
Keywords: Fatigue fracture, NASGRO equation, Von Misses stresses, Finite element analysis, Residual thermal stresses, Lifetime prediction
EXTENSION of the file: .doc
Special (Invited) Session: Analysis of Fatigue Fracture of Tank Wagon Railway Axles
Organizer of the Session: 634-306
How Did you learn about congress: Bogdan Radu (bogdan.radu@mec.upt.ro), Mircea Voda (mircea.voda@mec.upt.ro), Danut Sosdean (dsosdean@eng.upt.ro)
IP ADDRESS: 89.136.43.47