CUED Publications database

Design of passive vehicle suspensions for maximal least damping ratio

Smith, MC and Swift, SJ (2016) Design of passive vehicle suspensions for maximal least damping ratio. Vehicle System Dynamics, 54. pp. 568-584. ISSN 0042-3114

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This paper studies the use of the least damping ratio among system poles as a performance metric in passive vehicle suspensions. Methods are developed which allow optimal solutions to be computed in terms of non-dimensional quantities in a quarter-car vehicle model. Solutions are provided in graphical form for convenient use across vehicle types. Three suspension arrangements are studied: the standard suspension involving a parallel spring and damper and two further suspension arrangements involving an inerter. The key parameters for the optimal solutions are the ratios of unsprung mass to sprung mass and suspension static stiffness to tyre vertical stiffness. A discussion is provided of performance trends in terms of the key parameters. A comparison is made with the optimisation of ride comfort and tyre grip metrics for various vehicle types.

Item Type: Article
Divisions: Div F > Control
Depositing User: Cron Job
Date Deposited: 05 Jan 2018 20:37
Last Modified: 09 Sep 2021 00:37
DOI: 10.1080/00423114.2016.1145242