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Heavy vehicle pitch dynamics and suspension tuning

Research output: Contribution to journalJournal article

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Heavy vehicle pitch dynamics and suspension tuning. / Cao, Dongpu; Rakheja, Subhash; Su, Chun-Yi.

In: Vehicle System Dynamics, Vol. 46, No. 10, 2008, p. 931-953.

Research output: Contribution to journalJournal article

Harvard

Cao, D, Rakheja, S & Su, C-Y 2008, 'Heavy vehicle pitch dynamics and suspension tuning', Vehicle System Dynamics, vol. 46, no. 10, pp. 931-953. https://doi.org/10.1080/00423110701732899

APA

Cao, D., Rakheja, S., & Su, C-Y. (2008). Heavy vehicle pitch dynamics and suspension tuning. Vehicle System Dynamics, 46(10), 931-953. https://doi.org/10.1080/00423110701732899

Vancouver

Cao D, Rakheja S, Su C-Y. Heavy vehicle pitch dynamics and suspension tuning. Vehicle System Dynamics. 2008;46(10):931-953. https://doi.org/10.1080/00423110701732899

Author

Cao, Dongpu ; Rakheja, Subhash ; Su, Chun-Yi. / Heavy vehicle pitch dynamics and suspension tuning. In: Vehicle System Dynamics. 2008 ; Vol. 46, No. 10. pp. 931-953.

Bibtex

@article{5cd1a221ae824dfc9ede40e81a16251c,
title = "Heavy vehicle pitch dynamics and suspension tuning",
abstract = "The influence of suspension tuning of passenger cars on bounce and pitch ride performance has been explored in a number of studies, while only minimal efforts have been made for establishing similar rules for heavy vehicles. This study aims to explore pitch dynamics and suspension tunings of a two-axle heavy vehicle with unconnected suspension, which could also provide valuable information for heavy vehicles with coupled suspensions. Based on a generalised pitch-plane model of a two-axle heavy vehicle integrating either unconnected or coupled suspension, three dimensionless measures of suspension properties are defined and analysednamely the pitch margin (PM), pitch stiffness ratio (PSR), and coupled pitch stiffness ratio (CPSR)for different unconnected suspension tunings and load conditions. Dynamic responses of the vehicle with three different load conditions and five different tunings of the unconnected suspension are obtained under excitations arising from three different random road roughness conditions and a wide range of driving speeds, and braking manoeuvres. The responses are evaluated in terms of performance measures related to vertical and pitch ride, dynamic tyre load, suspension travel, and pitch-attitude control characteristics of the vehicle. Fundamental relationships between the vehicle responses and the proposed suspension measures (PM, PSR, and CPSR) are established, based on which some basic suspension tuning rules for heavy vehicles with unconnected suspensions are also proposed.",
keywords = "heavy vehicles, pitch dynamics, suspension tuning, unconnected suspension, dimensionless suspension measures, tuning rules, BRAKING, MODEL",
author = "Dongpu Cao and Subhash Rakheja and Chun-Yi Su",
note = "The final, definitive version of this article has been published in the Journal, Vehicle System Dynamics, 46 (10), 2008, {\textcopyright} Informa Plc",
year = "2008",
doi = "10.1080/00423110701732899",
language = "English",
volume = "46",
pages = "931--953",
journal = "Vehicle System Dynamics",
issn = "0042-3114",
publisher = "Taylor and Francis Ltd.",
number = "10",

}

RIS

TY - JOUR

T1 - Heavy vehicle pitch dynamics and suspension tuning

AU - Cao, Dongpu

AU - Rakheja, Subhash

AU - Su, Chun-Yi

N1 - The final, definitive version of this article has been published in the Journal, Vehicle System Dynamics, 46 (10), 2008, © Informa Plc

PY - 2008

Y1 - 2008

N2 - The influence of suspension tuning of passenger cars on bounce and pitch ride performance has been explored in a number of studies, while only minimal efforts have been made for establishing similar rules for heavy vehicles. This study aims to explore pitch dynamics and suspension tunings of a two-axle heavy vehicle with unconnected suspension, which could also provide valuable information for heavy vehicles with coupled suspensions. Based on a generalised pitch-plane model of a two-axle heavy vehicle integrating either unconnected or coupled suspension, three dimensionless measures of suspension properties are defined and analysednamely the pitch margin (PM), pitch stiffness ratio (PSR), and coupled pitch stiffness ratio (CPSR)for different unconnected suspension tunings and load conditions. Dynamic responses of the vehicle with three different load conditions and five different tunings of the unconnected suspension are obtained under excitations arising from three different random road roughness conditions and a wide range of driving speeds, and braking manoeuvres. The responses are evaluated in terms of performance measures related to vertical and pitch ride, dynamic tyre load, suspension travel, and pitch-attitude control characteristics of the vehicle. Fundamental relationships between the vehicle responses and the proposed suspension measures (PM, PSR, and CPSR) are established, based on which some basic suspension tuning rules for heavy vehicles with unconnected suspensions are also proposed.

AB - The influence of suspension tuning of passenger cars on bounce and pitch ride performance has been explored in a number of studies, while only minimal efforts have been made for establishing similar rules for heavy vehicles. This study aims to explore pitch dynamics and suspension tunings of a two-axle heavy vehicle with unconnected suspension, which could also provide valuable information for heavy vehicles with coupled suspensions. Based on a generalised pitch-plane model of a two-axle heavy vehicle integrating either unconnected or coupled suspension, three dimensionless measures of suspension properties are defined and analysednamely the pitch margin (PM), pitch stiffness ratio (PSR), and coupled pitch stiffness ratio (CPSR)for different unconnected suspension tunings and load conditions. Dynamic responses of the vehicle with three different load conditions and five different tunings of the unconnected suspension are obtained under excitations arising from three different random road roughness conditions and a wide range of driving speeds, and braking manoeuvres. The responses are evaluated in terms of performance measures related to vertical and pitch ride, dynamic tyre load, suspension travel, and pitch-attitude control characteristics of the vehicle. Fundamental relationships between the vehicle responses and the proposed suspension measures (PM, PSR, and CPSR) are established, based on which some basic suspension tuning rules for heavy vehicles with unconnected suspensions are also proposed.

KW - heavy vehicles

KW - pitch dynamics

KW - suspension tuning

KW - unconnected suspension

KW - dimensionless suspension measures

KW - tuning rules

KW - BRAKING

KW - MODEL

U2 - 10.1080/00423110701732899

DO - 10.1080/00423110701732899

M3 - Journal article

VL - 46

SP - 931

EP - 953

JO - Vehicle System Dynamics

JF - Vehicle System Dynamics

SN - 0042-3114

IS - 10

ER -