抗俯仰液压互联悬架三轴重型货车动态特性

抗俯仰液压互联悬架三轴重型货车动态特性丁飞1,2张农2韩旭11.湖南大学汽车车身先进设计制造国家重点实验室，湖南，长沙410082； 2.悉尼科技大学电机、机械与机械电子学院，悉尼，澳大利亚2007摘要：完成了安装抗俯仰液压互联悬架(HIS)三轴货车动力学方程的推导。采用自由图法和阻抗传递矩阵方法推导建立耦合机械系统和液压系统的动力学方程，该特征方程以机械系统的位移和速度以及机械与液压耦合边界处的压力作为状态矢量。对比分析HIS对车体恢复力和力矩及车体振动固有频率的影响。结果表明，液压互联悬架HIS系统能够为车体提供较大的抗俯仰力矩。自由振动分析表明，HIS改变了车体垂向和俯仰振荡中心位置，且增加了车体俯仰模态对应的固有频率，同时车体垂向跳动模态对应的固有频率几乎保持不变。液压互联悬架(HIS)；舒适性；抗俯仰悬架；三轴货车U463.33+5A10.3969/j.issn.2095-1469.2011.04.022Dynamic Characteristics of a Tri-axle Heavy Truck Fitted Hydraulically Anti-pith Interconnected Suspension Ding Fei 1,2Zhang Nong2Han Xu11. State key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha, Hunan 410082, China； 2. School of Electrical, Mechanical and Mechatronic Systems, University of Technology, Sydney, Australia 2007)Abstract: This paper briefly presents the derivation of the equations of motion of a tri-axle truck fitted with pitch resistant hydraulically interconnected suspension (HIS) system. Based on free body diagram and fluid transfer impedance matrix method, the characteristic equations of this mechanically and hydraulically coupled system are derived with a state vector including the displacements and velocities of mechanical system and the pressure at the mechanical-hydraulic boundary section. The comparison analysis of the sprung mass responses to road inputs is carried out between the trucks with conventional suspension and hydraulically interconnected suspension system. The obtained results indicate that the HIS system can provide great pitch restoring moment of sprung mass. And the free decay vibration analysis reveals that the HIS system changes the bounce and pitch oscillation center of sprung mass, and the obtained natural frequencies of bounce and pitch modes of sprung mass illustrate that the pitch stiffness is increased while the bounce stiffness is slightly softened.HIS； ride comfort； pitch resistant specific suspension； tri-axle truck 2011-9-11Foundation item: Key Project of Chinese National Programs for Fundamental Research and Development (2010CB832705)； National Science Fund of China for Distinguished Young Scholars (10725208)system isthe hydraulicderivationimpedancesprung mass,systems withperformance.1 GILLESPIE T D. Heavy Truck RideC. SAE Paper 850001.2 SMITH M C, WALKER G W. Interconnected Vehicle Suspension J. Proc. IMechE. Part D: J. Automobile Engineering, 2005, 219: 259-307.3 LIU P J, RAKHEJA S, AHMED A K W. An Analytical Study of an interconnected Vehicle SuspensionC/ ASME International Mechanical Engineering Congress and Exposition. San Francisco: s.n., 1995.4 WILDE J R, HEYDINGER G J, WGUENTHER D A. ADAMS Simulation of Ride and Handling Performance of the Kinetic Suspension System C. SAE Paper 2006- 01-1972.5 ZHANG N, SMITH W A, JEYAKUMARAN J. Hydraulically Interconnected Vehicle Suspension: Background and ModellingJ. Vehicle System Dynamics, 2010, 48 (1) : 17-40.6 CAO D, RAKHEJA S, SU C Y. Pitch Attitude Control and Braking Performance Analysis of Heavy Vehicle with Interconnected Suspensions C/SAE Paper 2007-01- 1347.7 Ding Fei, Zhang Nong, Han Xu. Dynamic Characteristic Analysis of Heavy Duty Truck Using Simplified Tandem Suspension ModelC/ The First IFToMM Asian Conference on Mechanism and Machine Science. Taipei, Taiwan: Department of Mechanical Engineering,National Taiwan University, 2010.8 WYLIE E B, STREETER V L. Fluid Transients M. New York: McGraw-Hill International Book Co., 1978.9 MILLIKEN W F, MILLIKEN D L. Chassis Design: Principles and Analysis M.UK: Professional Engineering Publishing, 2002.Corresponding Author: Prof Zhang Nong received his BE degree from Northeastern University in 1982, ME from Shanghai Jiao Tong University, China in 1984, and PhD from the University of Tokyo, Japan in 1989. He worked at several prestigious universities in China,Japan, USA and Australia respectively before joining the Faculty of Engineering and Information Technology of University of Technology, Sydney in 1995. Since 2009, he has been the Professor of Mechanical Engineering, at School of Electrical,Mechanical and Mechatronic Systems. For more than 20 years,Prof Zhang has been involved in research in areas of dynamcs and control of automotive systems including powertrains with various types of transmissions, hybrid propulsion systems,vehicle dynamics, passive and active suspensions； and mechanical vibration including experimental modal analysis, rotor dynamics,cold rolling mill chatter and machine condition monitoring.E-mail: .au Responsible Author:Ding Fei(1983-),Mister, Chongqing, China. PhD student, his current research interests include mechanism research and application of hydraulically interconnected suspension system, chassis dynamics analysis of heavy truck, passive and active safety research of heavy truck.E-mail:adf_hnu 163.com.抗俯仰液压互联悬架三轴重型货车动态特性作者： 丁飞， 张农， 韩旭， Ding Fei， Zhang Nong， Han Xu作者单位： 丁飞,Ding Fei(湖南大学汽车车身先进设计制造国家重点实验室 湖南 长沙410082；悉尼科技大学电机、机械与机械电子学院 悉尼 澳大利亚2007)， 张农,Zhang Nong(悉尼科技大学电机、机械与机械电子学院悉尼 澳大利亚2007)， 韩旭,Han Xu(湖南大学汽车车身先进设计制造国家重点实验室 湖南 长沙410082)刊名： 汽车工程学报英文刊名： CHINESE JOURNAL OF AUTOMOTIVE ENGINEERING年，卷(期)： 2011,01(4) 参考文献(9条)1.GILLESPIE T D Heavy Truck RideSAE Paper 8500012.SMITH M C.WALKER G W Interconnected Vehicle Suspension 20053.LIU P J.RAKHEJA S.AHMED A K W An Analytical Study of an interconnected Vehicle Suspension 19954.WILDE J R.HEYDINGER G J.WGUENTHER D A ADAMS Simulation of Ride and Handling Performance of the Kinetic Suspen