摘要
根据湿式离合器接合过程特点,应用平均雷诺方程和粗糙表面弹性接触模型对湿式离合器接合过程建立了有效数学模型。利用Runge-Kutta方法对模型求解,分别研究了摩擦衬片渗透性、润滑油粘度、接合压力、动静摩擦因数特性等因素对接合过程中转矩响应、粘性转矩峰值、锁止处转矩峰值和接合时间的影响规律,并通过试验验证了模型的正确性和有效性。仿真与试验结果表明:增大摩擦衬片渗透性或接合压力,可以加快转矩响应,缩短接合时间;增大润滑油粘度,可以减慢转矩响应,缩短接合时间;减小摩擦副的动静摩擦因数差值,可以减小锁止处转矩峰值。
Based on engagement process characteristics of wet clutch,average Reynolds equation and elastic contact model of two rough surfaces were applied to establishment of an efficient mathematical model for wet clutch engagement process.Runge-Kutta method was used to calculate the model.Rules of influences of friction-lining permeability,lubricant viscosity,engagement pressure and characteristics of static and sliding friction coefficient on torque response,peak value of viscous torque,lock-up torque peak value and engagement time were studied.The correctness and effectiveness of the model were verified by experiment.The simulated and experimental results indicate that increase of the permeability of friction lining or engagement pressure can accelerate the torque response and shorten engagement time;increase of lubricant viscosity can retard the torque response and shorten engagement time;reduce of the difference of static and sliding friction coefficient of friction pairs can decrease torque peak value at lock-up.
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
2010年第3期115-120,共6页
China Journal of Highway and Transport
基金
浙江大学校长基金项目(0820070615)
