Calculation of the crosswind displacement of pantographs

Bouferrouk, Abdessalem; Baker, Chris; Sterling, Mark; O'Neil, Hugh; Wood, Stephen

Abstract

The static crosswind displacements of a high speed pantograph and contact wire are studied. The aim is to assess the overall pantograph sway in crosswinds based on the relative movements of the pantograph and contact wire, taking into account the crosswind deflection of the train body. The pantograph and wire deflections are derived from simplified models of such structures, whereas train body displacements are computed via Vampire. A spectral approach is used to simulate the turbulent crosswind, which is then used with aerodynamic admittance function to obtain unsteady crosswind loading. Analysis of data shows negligible crosswind deflections of the pantograph itself in the range of few millimeters, but train body and wire deflections are much larger. It is shown that crosswinds may cause the pantograph sway to exceed prescribed limits for some combinations of wind gust and track conditions.

• Presentation Conference Type: Conference Paper (unpublished)
• Conference Name: BBAA VI International Colloquium on Bluff Bodies Aerodynamics & Applications
• Start Date: Jul 20, 2008
• End Date: Jul 24, 2008
• Publication Date: Jul 20, 2008
• Deposit Date: Jan 21, 2015
• Peer Reviewed: Peer Reviewed
• Keywords: crosswind displacement, pantographs
• Public URL: https://uwe-repository.worktribe.com/output/1010744
• Publisher URL: http://bbaa6.mecc.polimi.it/papers.html#papers
• Additional Information: Title of Conference or Conference Proceedings : BBAA VI International Colloquium on Bluff Bodies Aerodynamics & Applications
• Contract Date: Nov 15, 2016