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In-service assessment of equivalent conicity with the aim of preventing the unstable ride of rail vehicles
Project: Ministry of Science, Technological Development and Innovation of the Republic of Serbia (Institution: University of Belgrade, Faculty of Mechanical Engineering) (MESTD - 451-03-68/2020-14/200105)
Keywords: equivalent conicity; assessment methods; ride stability; in-service assessment; rail vehicles; rail infrastructure
Abstract
The paper provides a general survey of methods for equivalent conicity assessment. Different aspects of interest are addressed: type tests of new rail vehicles, acceptance of new railway tracks, as well as vehicles and infrastructure in-service. The paper discusses the procedure if the ride instability appears in service. According to European legislation, this situation requires equivalent conicity assessment on vehicle and infrastructure. The procedure is demonstrated for one vehicle in service, combined with reference rail profiles and rail profile samples acquired by track recording vehicle at the new Belgrade-Novi Sad railway line for 200 km/h, in combination with reference wheel profiles.
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