Characteristic analysis of pitch-resistant hydraulically interconnected suspensions for two-axle vehicles

Ding, F; Han, X; Zhang, N; Luo, Z

Characteristic analysis of pitch-resistant hydraulically interconnected suspensions for two-axle vehicles

Ding, F Han, X Zhang, N

Luo, Z

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Publication Type:: Journal Article
Citation:: JVC/Journal of Vibration and Control, 2015, 21 (16), pp. 3167 - 3188
Issue Date:: 2015-01-01

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Field	Value	Language
dc.contributor.author	Ding, F	en_US
dc.contributor.author	Han, X	en_US
dc.contributor.author	Zhang, N https://orcid.org/0000-0001-6408-0044	en_US
dc.contributor.author	Luo, Z https://orcid.org/0000-0002-6953-3986	en_US
dc.date.issued	2015-01-01	en_US
dc.identifier.citation	JVC/Journal of Vibration and Control, 2015, 21 (16), pp. 3167 - 3188	en_US
dc.identifier.issn	1077-5463	en_US
dc.identifier.uri	http://hdl.handle.net/10453/33983
dc.description.abstract	© The Author(s) 2014. This paper proposes a new method to investigate the characteristics of pitch-resistant hydraulically interconnected suspension (HIS) systems for two-axle vehicles in the pitch plane. The equations of motion for the mechanical and hydraulic coupled system are developed, in which the hydraulic strut forces are derived using the impedance transfer matrix method. The stiffness and damping matrices of the coupled systems are described in a manner similar to the generalized form of uncoupled conventional suspension (UCS) systems. The additional properties of HIS systems are explicitly described via hydraulic physical parameters. Based on the generalized form, (1) the accumulators of HIS systems can be functionally equivalent to a combined system with tandem bump and pitch-angular springs; (2) the direction damper valves (DDVs), which are located at the outlets of actuator cylinders, function like uncoupled tandem dampers; (3) the pitch damper valves (PDVs), which are fitted on the hose to connect the accumulators, alter the mode damping similar to the accumulators changing the mode stiffness; (4) the opposite installation corresponding to the schematic of front piston-rod-upward and rear piston-rod-downward produces higher mode stiffness and damping than the other installations. The dynamic responses are studied between the vehicles with HIS and UCS. Moreover, the damping coefficients are evaluated with the modal analysis method. The obtained results indicate that (1) the top and bottom DDVs mainly affect the vehicle body's pitch motion and bounce vibration, respectively, (2) the PDVs are able to alter the load distribution among wheel stations, and (3) damping parameters can be designed to minimize the vehicle body's pitch motion.	en_US
dc.relation.ispartof	JVC/Journal of Vibration and Control	en_US
dc.relation.isbasedon	10.1177/1077546314520829	en_US
dc.subject.classification	Acoustics	en_US
dc.title	Characteristic analysis of pitch-resistant hydraulically interconnected suspensions for two-axle vehicles	en_US
dc.type	Journal Article
utslib.citation.volume	16	en_US
utslib.citation.volume	21	en_US
utslib.for	091304 Dynamics, Vibration and Vibration Control	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
utslib.for	0913 Mechanical Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
utslib.copyright.status	closed_access
pubs.issue	16	en_US
pubs.publication-status	Published	en_US
pubs.volume	21	en_US

Abstract:

© The Author(s) 2014. This paper proposes a new method to investigate the characteristics of pitch-resistant hydraulically interconnected suspension (HIS) systems for two-axle vehicles in the pitch plane. The equations of motion for the mechanical and hydraulic coupled system are developed, in which the hydraulic strut forces are derived using the impedance transfer matrix method. The stiffness and damping matrices of the coupled systems are described in a manner similar to the generalized form of uncoupled conventional suspension (UCS) systems. The additional properties of HIS systems are explicitly described via hydraulic physical parameters. Based on the generalized form, (1) the accumulators of HIS systems can be functionally equivalent to a combined system with tandem bump and pitch-angular springs; (2) the direction damper valves (DDVs), which are located at the outlets of actuator cylinders, function like uncoupled tandem dampers; (3) the pitch damper valves (PDVs), which are fitted on the hose to connect the accumulators, alter the mode damping similar to the accumulators changing the mode stiffness; (4) the opposite installation corresponding to the schematic of front piston-rod-upward and rear piston-rod-downward produces higher mode stiffness and damping than the other installations. The dynamic responses are studied between the vehicles with HIS and UCS. Moreover, the damping coefficients are evaluated with the modal analysis method. The obtained results indicate that (1) the top and bottom DDVs mainly affect the vehicle body's pitch motion and bounce vibration, respectively, (2) the PDVs are able to alter the load distribution among wheel stations, and (3) damping parameters can be designed to minimize the vehicle body's pitch motion.

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http://hdl.handle.net/10453/33983