Stability Study of Articulated Vehicles Fitted with Hydraulically Interconnected Suspension

Li Hongxue, Li Shiwu,Sun Wencai,Yang Zhifa


 In order to explore the influence of suspension performance and saddle structure parameters on the handling stability of articulated vehicles,an anti-roll hydraulically interconnected system was proposed for single-axle semi-trailer suspension. Firstly,the frequency domain model of single-axle hydraulically interconnected suspension was established and verified by the roll displacement transfer function. At the same time,effective stiffness and damping were obtained according to the theory of complex mode vibration. On this basis,an articulated vehicle coupling Hydraulically Interconnected Suspension(HIS) model with saddle characteristics was presented to conduct the simulation. The results show that the hydraulically interconnected suspension system can only enhance the roll stability of the semi-trailer when the saddle stiffness parameters are not taken into account. When the roll stiffness parameters of the saddle are considered,the roll stability,yaw stability and coordination stability of the tractor and semi-trailer under the HIS system are improved,and the improvement effect is more significant when the yaw stiffness of the saddle is increased or the distance between the saddle and mass center of the semi-trailer is reduced. The results provide a theoretical basis for the design optimization of the articulated vehicle fitted with hydraulically interconnected suspension.



Keywords:  Hydraulically Interconnected Suspension(HIS),  articulated vehicle, saddle characteristics,  handling stability,  design optimization

Full Text:



YAO Z. Dynamic simulation for the rollover stability performances of articulated vehicles [J]. Journal of Automobile Engineering, 2014,228 (7):771—783.

ZHANG N,SMITH W A,JEYAKUMARAN J. Hydraulically inter- connected vehicle suspension:background and modeling[J]. Vehicle System Dynamics,2010,48 (1):17—40.

ZHOU B,HUANG X T,GENG Y. Influence of hydraulic parameters on hydraulically interconnected suspension based on Morris [J]. Journal of Hunan University (Natural Sciences),2016,43(2):70— 76.(In Chinese)

WANG L F,ZHANG N,DU H P. Experimental investigation of a hydraulically interconnected suspension in vehicle dynamics and stability contro [l J]. SAE International Journal of Passenger Cars-Mechanical Systems,2012,5(2):759—768.

WILDE J R. Experimental evaluation and ADAMS simulation of the Kinetic suspension system [D]. Ohio:College of Mechanical Engi- neering,Ohio State University,2005:128—159.

SMITH W A,ZHANG N,HU W. Hydraulically interconnected vehicle suspension:handling performance [J]. Vehicle System Dynamics,2011,49(1/2):87—106.

ZHOU M,ZHANG J,ZHENG M Y,et al. Simulation and experimental study on the off-road performance of vehicle with hydraulically interconnected suspension [J]. Automobile Engineering,2017,39 (4):447—456.(In Chinese)

GUO Y H. Design and research on the stiffness parameters of bus e- quipped with hydraulically interconnected suspension [J]. Dual- use Technology and Products,2016(18):71—73.(In Chinese)

ZHANG J,ZHOU M,ZHANG B J,et al. Dynamics analysis and ex- perimental study on a mining vehicle fitted with hydraulically inter- connected suspension [J]. Automobile Engineering,2016,38(6): 716—724.(In Chinese)

DING F,ZHANG N,HAN X. Dynamics analysis of pitch -resistant hydraulically interconnected suspensions for tri-axle straight trucks [J]. Chinese Journal of Automotive Engineering,2011,1(4):415— 423.(In Chinese)

DING F,ZHANG N,LIU J,et al. Dynamics analysis and design methodology of roll -resistant hydraulically interconnected suspensions for tri-axle straight trucks [J]. Journal of the Franklin Insti- tute,2016,353(17):4620—4651.

WILDE J R,HEYDINGER G J,GUENTHER D A,et al. Experimental evaluation of fishhook maneuver performance of a kinetic suspension system [R]. Washington DC:SAE International,2005:387—396.


  • There are currently no refbacks.