Multi-performance analyses and design optimisation of hydro-pneumatic suspension system for an articulated frame-steered vehicle

Auteurs

Yuming Yin, School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou, China, CONCAVE Research Centre, Department of Mechanical and Industrial Engineering, Concordia University, Montreal, QC, Canada
Subhash Rakheja, CONCAVE Research Centre, Department of Mechanical and Industrial Engineering, Concordia University, Montreal, QC, Canada
Paul-Emile Boileau, Robert-Sauve Research Institute of Occupational Health and Safety (IRSST), Montreal, QC, Canada

Type de document

Études primaires

Année de publication

2019

Langue

Anglais

Titre de la revue

Vehicle System Dynamics

Première page

108

Dernière page

133

Résumé

This study investigates the coupled ride and directional performance characteristics of an articulated frame-steered vehicle (AFSV). A three-dimensional multi-body dynamic model of the vehicle is formulated integrating the hydro-mechanical frame steering and hydro-pneumatic suspension (HPS) systems. The model parameters are obtained from field-measured data acquired for an unsuspended AFSV prototype and a validated scaled HPS model. The HPS is implemented only at the front axle, which supports the driver cabin. The main parameters of the HPS, including the piston area, and flow areas of bleed orifices and check valves, are selected through design sensitivity analyses and optimisation, considering ride vibration, and roll- and yaw-plane stability performance measures. These include the frequency-weighted vertical vibration of the front unit, root-mean-square lateral acceleration during the sustained lateral load transfer ratio period prior to absolute rollover of the rear unit, and yaw-mode oscillation frequency following a lateral perturbation of the vehicle. The results suggested that the implementation of the HPS to the front unit alone could help preserve the directional stability limits compared to the unsuspended prototype vehicle and reduce the ride vibration exposure by nearly 30%. The results of sensitivity analyses revealed that the directional stability performance limits are only slightly affected by the HPS parameters. Further reduction in the ride vibration exposure was attained with the optimal design, irrespective of the payload variations. The vehicle operation at relatively higher speeds, however, would yield greater vibration exposure. © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.

Mots-clés

Cadre et cabine de sécurité, Safety frame and cab, Véhicule, Vehicule, Système hydraulique sous pression, Hydraulic pressure system

Numéro de projet IRSST

n/a

Citation recommandée

Yin, Y., Rakheja, S. et Boileau, P.-E. (2019). Multi-performance analyses and design optimisation of hydro-pneumatic suspension system for an articulated frame-steered vehicle. Vehicle System Dynamics, 57(1), 108-133. https://doi.org/10.1080/00423114.2018.1453079