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Optimisation of support stiffness at railway crossings

Grossoni, Ilaria, Bezin, Yann and Neves, Sérgio (2017) Optimisation of support stiffness at railway crossings. Vehicle System Dynamics, 56 (7). pp. 1072-1096. ISSN 0042-3114

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Turnouts are a key element of the railway system. They are also the part of the system with the highest number of degradation modes and associated failures. There are a number of reasons for this, including high dynamic loads resulting from non-uniform rail geometry and track support stiffness. The main aim of this study is to propose a methodology to optimise the pad stiffness along a crossing panel in order to achieve a decrease in the indicators of the most common failure modes. A three-dimensional vehicle/track interaction model has been established, considering a detailed description of the crossing panel support structure. A genetic algorithm has been applied to two main types of constructions, namely direct and indirect fixing, to find the optimum combinations of resilient pad characteristics for various cases of travelling direction, travelling speed and support conditions.

Item Type: Article
Uncontrolled Keywords: Crossing panel; Support stiffness; Fixing systems; Design optimisation; Vehicle/track interaction model
Subjects: T Technology > TF Railroad engineering and operation
Schools: School of Computing and Engineering > Institute of Railway Research
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Depositing User: Ilaria Grossoni
Date Deposited: 29 Nov 2017 10:16
Last Modified: 28 Aug 2021 14:15


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