Title: Steady-state response of fluid-structure interactions in hydraulic piping system of passive interconnected suspensions

Authors: Jing Zhao; Nong Zhang; JinChen Ji

Addresses: School of Electrical, Mechanical and Mechatronic Systems, FEIT, University of Technology Sydney, Broadway, NSW 2007, Australia ' School of Electrical, Mechanical and Mechatronic Systems, FEIT, University of Technology Sydney, Broadway, NSW 2007, Australia ' School of Electrical, Mechanical and Mechatronic Systems, FEIT, University of Technology Sydney, Broadway, NSW 2007, Australia

Abstract: Pressure changes in the liquid-filled fluid circuit of a hydraulically interconnected suspension (HIS) system can induce vibrations of the whole pipeline and the associated structure, and hence become a source of structural noise which degrades ride comfort. This paper presents a numerical and experimental investigation into the vibration of the hydraulic piping system of a passive interconnected suspension. The transfer matrix method (TMM) is used to develop a mathematical model, which consists of various pipe sections, hose sections, concentrated masses, spring supports, elbows, damper valves, and accumulators. Laboratory experiments are performed on two liquid-filled piping systems. The measured steady-state responses of the hydraulic circuits are compared with those obtained from numerical simulations of the developed model. It is found that the developed model of the hydraulic system has a reasonable accuracy in the frequency range of interest, and thus can be employed to optimise the design of the hydraulic system.

Keywords: fluid-structure coupled vibration; liquid-filled piping systems; passive interconnected suspension; TMM; transfer matrix method; steady state response; fluid-structure interaction; FSI; hydraulic piping systems; pressure changes; vehicle noise; vehicle suspension; ride comfort; vehicle ride; hydraulic system design; mathematical modelling; numerical simulation.

DOI: 10.1504/IJVD.2016.082362

International Journal of Vehicle Design, 2016 Vol.72 No.4, pp.305 - 331

Received: 21 Nov 2014
Accepted: 22 Nov 2015
Published online: 21 Feb 2017 *

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