Nonlinear optimal specification of a locomotive axle-box hydraulic damper for vibration reduction and track-friendliness

W. L. Wang, D. S. Yu, S. Iwnicki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

As speeds and loads continue to increase in modern railway transportation, it becomes more and more important to be able to model the exact characteristics of all elements of the vehicle suspension. In this paper, the issue of symmetric and asymmetric damping characteristics for hydraulic dampers used in railway applications is discussed and a comparison of three different damper models and their effects on the Chinese SS9 locomotive system dynamics has been carried out. The three damper models included are a simple linear damper model, the Maxwell damper model and a fully nonlinear ‘in-service’ damper model. An optimization has been carried out using the nonlinear ‘in-service’damper model and the Design of Experiments (DoE) approach to optimise the SS9 locomotive axle-box hydraulic dampers. Global optimal nonlinear damping characteristics of the axle-box dampers were obtained and the locomotive dynamic responses show that both the vibrations of the bogie frame and the dynamic wheel-rail interaction forces can be significantly reduced, compared to the results when conventional linear damper models were employed. The locomotive stability and track-friendliness is also improved. The nonlinear model and the approach introduced in this study can also be applied to the engineering specification of other kinds of hydraulic dampers where nonlinearities are significant.

Original languageEnglish
Title of host publicationThe Dynamics of Vehicles on Roads and Tracks
Subtitle of host publicationProceedings of the 24th Symposium of the International Association for Vehicle System Dynamics, IAVSD 2015
PublisherCRC Press/Balkema
Pages1471-1480
Number of pages10
ISBN (Print)9781138028852
Publication statusPublished - 3 May 2016
Event24th Symposium of the International Association for Vehicle System Dynamics - Graz, Austria
Duration: 17 Aug 201521 Aug 2015
Conference number: 24

Conference

Conference24th Symposium of the International Association for Vehicle System Dynamics
Abbreviated titleIAVSD 2015
CountryAustria
CityGraz
Period17/08/1521/08/15

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Wang, W. L., Yu, D. S., & Iwnicki, S. (2016). Nonlinear optimal specification of a locomotive axle-box hydraulic damper for vibration reduction and track-friendliness. In The Dynamics of Vehicles on Roads and Tracks: Proceedings of the 24th Symposium of the International Association for Vehicle System Dynamics, IAVSD 2015 (pp. 1471-1480). CRC Press/Balkema.