CUED Publications database

Inertance-Integrated Primary Suspension Optimisation on an Industrial Railway Vehicle Model

Lewis, T and Li, Y and Tucker, G and Jiang, JZ and Neild, S and Smith, MC and Goodall, R and Iwnicki, S and Dinmore, N (2020) Inertance-Integrated Primary Suspension Optimisation on an Industrial Railway Vehicle Model. In: UNSPECIFIED pp. 570-579..

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Improving the track friendliness of a railway vehicle is highly beneficial to the rail industry, as it substantially increases its cost effectiveness. Rail surface damage under curving conditions can be reduced by using vehicles with a reduced Primary Yaw Stiffness (PYS); however, a lower PYS often leads to a reduction in high-speed stability and can negatively impact ride comfort. Previous studies have suggested that this trade-off, between track friendliness and passenger comfort, can be successfully improved by using an inerter in the primary suspension; however, these studies used simplified two-axle vehicles and simplified contact models, and track inputs. Considering a more realistic four-axle passenger vehicle model, this paper investigates the extent to which the PYS can be reduced using inertance-integrated primary lateral suspensions without increasing Root Mean Square (RMS) lateral carbody accelerations when running over a 5 km example track (with a number of vertical, lateral and longitudinal irregularities, and gauge variations). The vehicle, with inertance-integrated primary lateral suspensions, has been modelled in$$\mathrm{VAMPIRE}^{\textregistered }$$, and the vehicle dynamics are captured over a range of different velocities and wheel-rail equivalent conicities. Several inertance-integrated suspensions are optimised, leading to permissible PYS reductions of up to 47% compared to the original vehicle, whilst lateral carbody accelerations remain at acceptable levels. This level of PYS reduction would result in a potential Network Rail Variable Usage Charge saving of 26%.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Divisions: Div F > Control
Depositing User: Cron Job
Date Deposited: 29 Jun 2020 20:01
Last Modified: 02 Sep 2021 05:48
DOI: 10.1007/978-3-030-38077-9_68