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On Quasi-Newton Method Applied To 2D Wheel-Rail Contact Models

Pislaru, Crinela and Anyakwo, Arthur (2014) On Quasi-Newton Method Applied To 2D Wheel-Rail Contact Models. International Journal of Engineering Research & Technology, 3 (3). pp. 1962-1971. ISSN 2278-0181

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Reliable and proficient numerical methods are required to determine the contact points between wheel and rail. This paper presents the use of Quasi-Newton method for determining the solution of a reduced number of non-linear wheel-rail contact geometry equations that arise as a result of the interaction of wheel and rail on the track.
A novel two dimensional (2D) wheel-rail contact model is developed by using the wheel-rail contact co-ordinates to calculate the wheel-rail normal contact forces without approximating the contact angle. The simulated results are stored in a lookup table and accessed during the simulation of the bogie dynamic behaviour thus reducing the computational time. The reduced number of non-linear wheel-rail contact geometry equations and employment of Quasi-Newton method enable the proposed 2D wheel-rail contact model to be used for fast and real time simulations of complex and non-linear wheel-rail contact mechanics.

Item Type: Article
Uncontrolled Keywords: wheel-rail interface; lateral displacement; yaw angle; wheel-rail contact model; railway vehicle dynamics; normal forces
Subjects: T Technology > TJ Mechanical engineering and machinery
Schools: School of Computing and Engineering
School of Computing and Engineering > Institute of Railway Research
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Depositing User: Crinela Pislaru
Date Deposited: 03 Apr 2014 15:46
Last Modified: 28 Aug 2021 11:36


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