Abstract




 
   

Vol. 13, No. 1 (February 2000) 61-76   

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  ON MINIZING MECHANICAL STRESSES OF THE RAIL WAY WHEELS
 
 
H. Moosavi and M. Esfahanian

Department of Mechanical Engineering
Isfahan university of Technology
Isfahan, Iran
 
 
( Received: November 18, 1998 – Accepted: July 29, 1999 )
 
 

Abstract    The purpose of this paper is to study the behavior of elastic-plastic stresses under severe drag braking. A railway wheel performs three tasks, aiding in trian movement, supporting the car load, and acting as a brake drum. Finite element computer programs are developed for elasto-plastic stress analysis. An attempt is made here to find an improved fillet profile of the wheel with the intention of minimizing high tensile mechanical stresses. Three new fillet profiles for the wheel are tested. A penalty function is used as a criterion for comparison of stresses between the new designs and the old design. The design with the least penalty is chosen to be the improved one.

 

Keywords    Railway Wheels, Mechanical Stresses, Profile Optimization

 

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