TY - JOUR
T1 - Influence of the Friction Modelling Decisions on the Acceptance of the Running Behaviour of a Friction-Damped Locomotive
AU - Millan, Pedro
AU - Pagaimo, Joao
AU - Pacheco Magalhaes, Hugo
AU - Antunes, Pedro
AU - Ambrósio, Jorge
N1 - Funding Information:
To the European project LOCATE, under Shift2Rail Joint Undertaking of the European Union’s Horizon 2020 research and innovation programme with grant agreement no. 881805 – LOCATE – H2020-S2RJU-OC-IP5-01-2019 and to its partners Evoleo (Portugal), FGC – Ferrocarrils Generalitat Catalunya (Spain), Vibratec (France), HUD – University of Huddersfield (UK) and UIC (France), the authors thank for the data and characterisation of the application case.
Publisher Copyright:
© 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
PY - 2024/1/1
Y1 - 2024/1/1
N2 - Multibody simulations are widely used for the dynamic analysis of railway vehicles, including the acceptance of vehicle running behaviour. Among these, the freight vehicles have, generally, friction damped suspensions for which numerical modelling is particularly challenging due to the contacting geometries, the intermittent contact, and the frequent stick-slip transitions. The impact of modelling decisions of friction-damped suspensions on the acceptance quantities for vehicle behaviour is the focus of this work. The selection of friction models and tuning of their parameters is challenging. In particular, the selection of friction coefficients is not straight forward, as friction conditions vary during operation and over time. This work aims to address both problems. A model of a friction-damped freight locomotive is used to simulate the dynamic response of the vehicle under realistic operation conditions and assess the impact of the friction modelling decisions. The results show that the use of different friction models provides similar results if the parameters are appropriately tuned. In contrast, the selection of friction coefficients significantly impacts the acceptance quantities, with emphasis on the wheel-rail forces at small radius curve transitions. The results recommend that the standard should include variations of the friction coefficients used for the friction-damped suspensions.
AB - Multibody simulations are widely used for the dynamic analysis of railway vehicles, including the acceptance of vehicle running behaviour. Among these, the freight vehicles have, generally, friction damped suspensions for which numerical modelling is particularly challenging due to the contacting geometries, the intermittent contact, and the frequent stick-slip transitions. The impact of modelling decisions of friction-damped suspensions on the acceptance quantities for vehicle behaviour is the focus of this work. The selection of friction models and tuning of their parameters is challenging. In particular, the selection of friction coefficients is not straight forward, as friction conditions vary during operation and over time. This work aims to address both problems. A model of a friction-damped freight locomotive is used to simulate the dynamic response of the vehicle under realistic operation conditions and assess the impact of the friction modelling decisions. The results show that the use of different friction models provides similar results if the parameters are appropriately tuned. In contrast, the selection of friction coefficients significantly impacts the acceptance quantities, with emphasis on the wheel-rail forces at small radius curve transitions. The results recommend that the standard should include variations of the friction coefficients used for the friction-damped suspensions.
KW - Multibody Dynamics
KW - Railway Dynamics
KW - Vehicle Approval
KW - Contact Mechanics
UR - http://www.scopus.com/inward/record.url?scp=85151352971&partnerID=8YFLogxK
U2 - 10.1080/00423114.2023.2195668
DO - 10.1080/00423114.2023.2195668
M3 - Article
VL - 62
SP - 719
EP - 738
JO - Vehicle System Dynamics
JF - Vehicle System Dynamics
SN - 0042-3114
IS - 3
ER -