The characteristics of friction-induced vibration of wet clutch engagement are investigated based on a four-degree-of-freedom dynamic model. The steady-state nonlinear LuGre friction model is employed. Stability analysis is performed by applying eigenvalue method and numerical simulation for the dynamic model is conducted in MATLAB/Simulink. The results demonstrate that negatively sloped friction coefficient with sliding velocity and the fluctuation of interface pressure both contribute to clutch judder. It also indicates that clutch judder will get intense with more difference between static and kinetic coefficients of friction, and less difference between the frequency of pressure fluctuation, and the inherent frequency of the unstable mode when the instability occurs. Load excitation has a similar effect on clutch judder with interface pressure fluctuation.
杨立昆,李和言,马彪. 湿式离合器接合过程摩擦振颤机理研究[J]. 振动与冲击, 2016, 35(9): 117-122.
YANG Li-kun, LI He-yan, MA Biao. Research on Friction-induced Vibration of Wet Clutch Engagement. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(9): 117-122.
[1] Crowther A, Zhang N, Liu D K, et al.Analysis and Simulation of Clutch Engagement Judder and Stick-slip in Automotive Powertrain Systems [J].Journal of Automobile Engineering, 2004, 218(12):1427-1446.
[2] Crowther A, Zhang N.Torsional Finite Elements and Nonlinear Numerical Modelling in Vehicle Power-train Dynamics [J].Journal of Sound and vibration, 2005, 284(3-5):825-849.
[3] Centea D, Rahnejat H, Menday M T.Non-linear Multi-body Dynamic Analysis for the Study of Clutch Torsional Vibrations (Judder) [J].Applied Mathematical Modelling, 2001, 25(3):177-192.
[4] Centea D, Rahnejat H, Menday M T.The Influence of the Interface Coefficient of Friction Upon the Propensity to Judder in Automotive Clutches [J].Journal of Automobile Engineering, 1999, 213(3):245-259.
[5] Duan C W, Singh R.Stick-slip Behavior of Torque Converter Clutch [J].SAE paper, 2005, 1:2456-2466.
[6] Duan C W, Singh R.Transient Responses of a 2-dof Torsional System with Nonlinear Dry Friction Under a Harmonically Varying Normal Load [J].Journal of Sound and Vibration, 2005, 285(4-5):1223-1234.
[7] Duan C W, Singh R.Super-harmonics in a Torsional System with Dry Friction Path Subject to Harmonic Excitation Under a Mean Torque [J].Journal of Sound and Vibration, 2005, 285(4-5):803-834.
[8] 胡宏伟,周晓军,杨先勇等.离合器结合过程中抖动及其影响因素的分析[J].浙江大学学报(工学版),2009,43(3):535-539.
HU Hong-wei, ZHOU Xiao-jun, YANG Xian-yong.Analysis of clutch engagement judder and its influence factors [J].Journal of Zhejiang University (Engineering Science), 2009, 43(3): 535-539.
[9] 陈俐,王昊松,习纲.离合器接合过程抖振机理与控制研究[J].系统仿真学报,2011,23(7):1451-1458.
CHEN Li, WANG Hao-song, XI Gang.Clutch engagement control based on stability analysis [J].Journal of System Simulation, 2011, 23(7): 1451-1458.
[10] 颜克志,方宗德,张国胜.汽车离合器接合过程中的稳定性分析研究[J].机械科学与技术,2007,26(5):615-618.
YAN Ke-zhi, FANG Zong-de, ZHANG Guo-sheng.Stability analysis and study of automotive clutch engagement [J].Mechanical Science and Technology for Aerospace Engineering, 2007,26(5): 615-618.
[11] Popov V L.Contact Mechanics and Friction Physical Principles and Applications [M].Berlin:Springer, 2010.
[12] Astrom K J, Canudas-De-Wit C.Revisiting the LuGre Friction Model [J].IEEE Control Systems Magazine, 2008:101-114.
[13] Sinou J.-J, Dereure O, Mazet G.-B, et al.Friction-induced Vibration for an Aircraft Brake System-Part 1: Experimental Approach and Stability Analysis [J]. Journal of Mechanical Sciences, 2006, 48(5):536-554