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Roll- and pitch-plane-coupled hydro-pneumatic suspension. Part 2 dynamic response analyses

Research output: Contribution to journalJournal article

Published

Associated organisational unit

Journal publication date2010
JournalVehicle System Dynamics
Journal number4
Volume48
Number of pages22
Pages507-528
Original languageEnglish

Abstract

In the first part of this study, the potential performance benefits of fluidically coupled passive suspensions were demonstrated through analyses of suspension properties, design flexibility and feasibility. In this second part of the study, the dynamic responses of a vehicle equipped with different configurations of fluidically coupled hydro-pneumatic suspension systems are investigated for more comprehensive assessments of the coupled suspension concepts. A generalised 14 degree-of-freedom nonlinear vehicle model is developed and validated to evaluate vehicle ride and handling dynamic responses and suspension anti-roll and anti-pitch characteristics under various road excitations and steering/braking manoeuvres. The dynamic responses of the vehicle model with the coupled suspension are compared with those of the unconnected suspensions to demonstrate the performance potential of the fluidic couplings. The dynamic responses together with the suspension properties suggest that the full-vehicle-coupled hydro-pneumatic suspension could offer considerable potential in realising enhanced ride and handling performance, as well as improved anti-roll and anti-pitch properties in a very flexible and energy-saving manner.

Bibliographic note

The final, definitive version of this article has been published in the Journal, Vehicle System Dynamics, 48 (4), 2010, © Informa Plc