Rail vehicle dynamics
Rail vehicle dynamics
The vehicle–track interaction and the resulting dynamic response of the vehicle involve a number of complex wenonlinear problems. Large vertical loads act through a small contact patch leading to very high contact pressures. Transverse loads acting through this contact induce a relative velocity between wheel and rail expressed in non-dimensional form as a creepage. The wheel and rail profiles determine the contact patch shape and affect the ability of the vehicle to run stably. If the yaw stiffness of the axles is too low, the vehicle will become unstable at a relatively low speed; conversely, if the yaw stiffness is too high, the curving behaviour will be adversely affected. The vehicle suspension, especially the secondary suspension, also affects the ride comfort of passengers. Finally, it is shown how the speed profiles of accelerating and decelerating trains can be calculated from basic assumptions about the train power, adhesion and rolling resistance.
Curving behaviour, Ride comfort, Suspension design, Train performance, Vehicle dynamics, Wheel/rail contact
133-147
Thompson, David
bca37fd3-d692-4779-b663-5916b01edae5
Squicciarini, Giacomo
c1bdd1f6-a2e8-435c-a924-3e052d3d191e
8 August 2022
Thompson, David
bca37fd3-d692-4779-b663-5916b01edae5
Squicciarini, Giacomo
c1bdd1f6-a2e8-435c-a924-3e052d3d191e
Thompson, David and Squicciarini, Giacomo
(2022)
Rail vehicle dynamics.
In,
Sustainable Railway Engineering and Operations.
(Transport and Sustainability, 14)
Emerald Publishing, .
(doi:10.1108/S2044-994120220000014008).
Record type:
Book Section
Abstract
The vehicle–track interaction and the resulting dynamic response of the vehicle involve a number of complex wenonlinear problems. Large vertical loads act through a small contact patch leading to very high contact pressures. Transverse loads acting through this contact induce a relative velocity between wheel and rail expressed in non-dimensional form as a creepage. The wheel and rail profiles determine the contact patch shape and affect the ability of the vehicle to run stably. If the yaw stiffness of the axles is too low, the vehicle will become unstable at a relatively low speed; conversely, if the yaw stiffness is too high, the curving behaviour will be adversely affected. The vehicle suspension, especially the secondary suspension, also affects the ride comfort of passengers. Finally, it is shown how the speed profiles of accelerating and decelerating trains can be calculated from basic assumptions about the train power, adhesion and rolling resistance.
This record has no associated files available for download.
More information
Published date: 8 August 2022
Additional Information:
Publisher Copyright:
© 2022 by Emerald Publishing Limited.
Keywords:
Curving behaviour, Ride comfort, Suspension design, Train performance, Vehicle dynamics, Wheel/rail contact
Identifiers
Local EPrints ID: 473324
URI: http://eprints.soton.ac.uk/id/eprint/473324
ISSN: 2044-9941
PURE UUID: eee7c3af-5031-41e2-9e97-6e561a58913b
Catalogue record
Date deposited: 13 Jan 2023 18:08
Last modified: 17 Mar 2024 03:27
Export record
Altmetrics
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
