Thin-Film Lubrication Friction Characteristics of Wet Brake

doi:10.3969/j.issn.1674-0696.2015.06.33

Abstract

Abstract: In order to improve the braking and safety performance of wet brake, a mathematics method to explore the friction characteristics based on thin-film lubrication model for wet brake was proposed. The effective mathematical model was established by the research on brake oil film layer. The velocity distribution of the film on the interface of brake in the adsorption layer and normal layer and the friction distribution in oil were analyzed. And then the model was simulated and analyzed by MATLAB. The results of analysis show that the oil velocity distribution changes with the thickness of oil film adsorption layer and normal layer, and the brake friction of wet brake is mainly obtained from the continued shear the oil film between the friction pair; the more effective of the adsorption layer between the friction pair is, the better the braking and safety performance of the whole brake is.

Key words: electromechanical engineering, wet brake, thin-film lubrication, adsorption layer

摘要： 为改善湿式制动器制动效能以及安全性能，提出了一种基于薄膜润滑模型的湿式制动器摩擦特性探究方法；通过对制动油膜分层研究，建立了有效的数学模型；讨论了油膜吸附层、常规层中油液在制动界面上的速度分布情况以及油液中摩擦力的分布情况；利用MATLAB对模型进行仿真分析。结果表明：油液流速分布与油膜吸附层和常规层的厚度有关，且湿式制动器的制动摩擦力主要是通过不断剪切摩擦片之间的油膜而获得的，而摩擦片间吸附层区域越好，整个制动器的制动性能越好，安全性能也越优良。

关键词: 机电工程, 湿式制动器, 薄膜润滑, 吸附层

CLC Number:

Jia Ce, Zheng Xunjia, Luo Tianhong, Pan Xuejiao. Thin-Film Lubrication Friction Characteristics of Wet Brake[J]. Journal of Chongqing Jiaotong University(Natural Science), 2015, 34(6): 176-180.

贾策，郑讯佳，罗天洪，潘雪娇. 湿式制动器的薄膜润滑摩擦特性分析[J]. 重庆交通大学学报（自然科学版）, 2015, 34(6): 176-180.

References

［1］ Sergienko V P,Tseluev M Yu.Effect of operation parameters on thermal loading of wet brake discs,Part 1:Problem formulation and methods of study ［J］.Journal of Friction and Wear,2012,33(5):322-329.
［2］ Sergienko V P,Tseluev M Yu.Effect of operation parameters on thermal loading of wet brake discs,Part 2:Study results ［J］.Journal of Friction and Wear,2012,33(6):472-478.
［3］ Zivanovic Z,Milic M.Thermal load of multidisc wet friction assemblies at braking regime ［J］.Journal of Mechanical Engineering,2012,58(1):29-36.
［4］孙东野,胡丰宾,秦大同,等.湿式多片制动器热应力分布规律试验分析［J］.中国机械工程,2010,21(16):2006-2010.
Sun Dongye,Hu Fengbin,Qin Datong,et al.An experimental analysis on thermal stress distributions in a multiple disc wet brake ［J］.China Mechanical Engineering,2010,21(16):2006-2010.
［5］孙东野,秦大同,王玉兴.热机现象对湿式多片制动器设计的影响［J］.农业机械学报,1999,15(3):147-150.
Sun Dongye,Qin Datong,Wang Yuxing.Influence of thermo mechanical phenomena on design of multiple disc wet brakes ［J］.Transactions of the Chinese Society of Agricultural Engineering,1999,15(3):147-150.
［6］孙东野,秦大同,王玉兴,等.湿式多片制动器衬片压力分布的影响因素［J］.农业机械学报,1999,30(1):68-72.
Sun Dongye,Qin Datong,Wang Yuxing,et al.Study on influenced factors of lining pressure distribution of wet multi disc brake ［J］.Transactions of the Chinese Society of Agricultural Engineering,1999,30(1):68-72.
［7］罗天洪,张会莉,罗文军,等.基于ADAMS 的楔式制动器摩擦特性研究［J］.重庆交通大学学报:自然科学版,2011,30(3):461-464.
Luo Tianhong,Zhang Huili,Luo Wenjun,et al.Friction characteristics of air wedged brake based on ADAMS ［J］.Journal of Chongqing Jiaotong University:Natural Science,2011,30(3):461-464.
［8］罗天洪,吴不得,罗文军,等.重载盘式制动器热-结构耦合温度场分析［J］.重庆交通大学学报:自然科学版,2011,33(5):152-156.
Luo Tianhong,Wu Bude,Luo Wenjun,et al.Thermal structure coupling temperature field of heavy duty disc brake ［J］.Journal of Chongqing Jiaotong University:Natural Science,2011,33(5):152-156.
［9］刘林.装载机驱动桥湿式制动器的研究［D］.浙江：浙江大学,2011.
Liu Lin.The Research on the Wet Brake in the Axle for the Wheel Loader ［D］.Zhejiang:Zhejiang University,2011.
［10］曾凡林,孙毅.纳米薄膜润滑及其改性的分子动力学模拟［J］.机械工程学报,2006,42(7):138-143.
Zeng Fanlin,Sun Yi.Molecular dynamics simulation of nanometer-scale thin film lubrication and its modification ［J］.Chinese Journal of Mechanical Engineering,2006,42(7):138-143.

[1]	DENG Renren1,2，ZUO Hongbing1,2, HE Shengli1,2, TIAN Dawei1,2, DENG Feng1,2, SONG Jinhai1,2. Diversified Design of Onshore Power Supply for Ships and Its Application [J]. Journal of Chongqing Jiaotong University(Natural Science), 2020, 39(05): 138-144.
[2]	WANG Qiang1,2, QI Xiaojie1, WANG Yunlong1, JIANG Li1, WANG Guotian1. Economic Model and Evaluation of Engineering Retread Tires Based on Life Cycle Theory [J]. Journal of Chongqing Jiaotong University(Natural Science), 2019, 38(05): 118-122.
[3]	CAO Yuanwen1, ZHOU Hua1, XIAO Wei1, YANG Xue1, XIA Zhulin2, ZHENG Nanxiang3. Stirring and Dispersing Mechanism of PVA Fiber Bundle Based on ANSYS CFX [J]. Journal of Chongqing Jiaotong University(Natural Science), 2019, 38(01): 125-130.
[4]	XU Guangjv，GAO Jian，ZHAO Yang. Simulation Analysis on Dynamic Balancing for Crankshaft of a Three Cylinder Diesel Engine [J]. Journal of Chongqing Jiaotong University(Natural Science), 2019, 38(01): 131-136.
[5]	ZHANG Min, ZHANG Hongxin, LIU Yongzhen, LEI Lin. Experimental Research on Internal Piezoelectric Cantilever Energy Harvesting From FIV [J]. Journal of Chongqing Jiaotong University(Natural Science), 2018, 37(12): 133-137.
[6]	YAN Guojun1, 2, 3, YANG Yan1, GU Jianhua1, YAO Yueqin1, QI Miao1, 4. Nonlinear Vibration Analysis of Electromechanical Coupling System of Pure Electric Tractor [J]. Journal of Chongqing Jiaotong University(Natural Science), 2018, 37(10): 123-132.
[7]	MEI Jianwei，TIAN Yanfang，LUO Min，LIU Jie，WEI Haibo. Temperature Compensation Technology for Induction Motor Vector Control System [J]. Journal of Chongqing Jiaotong University(Natural Science), 2018, 37(02): 123-128.
[8]	YANG Jingdong, LIU Yongzhen, ZHANG Min, ZHANG Hongxin. Modeling of Vortex-Induced Vibrations (VIV) Energy Harvesting and Experimental Validation [J]. Journal of Chongqing Jiaotong University(Natural Science), 2017, 36(9): 104-107.
[9]	JIA Ce，LU Shiqiu，LUO Tianhong. Temperature Prediction of Friction Interface of Wet Brake Based on Extrapolation [J]. Journal of Chongqing Jiaotong University(Natural Science), 2017, 36(6): 121-124.
[10]	WANG Hai, WANG Yongzhi, LIU Huida, KOU Yuping, YUAN Xiaoming, SUN Rui. Development of Servomotor Driven Shaking Table and Performance Assessment of Its System [J]. Journal of Chongqing Jiaotong University(Natural Science), 2017, 36(4): 114-120.
[11]	LI Junwei，CAI Liangsheng，GAO Song. Study on AC Induction Motor for Vehicles Start ControlBased on Field Improved Vector Control [J]. Journal of Chongqing Jiaotong University(Natural Science), 2017, 36(2): 115-122.
[12]	CHEN Hu. Support Vector Machine Based on Parameter Optimization and Its Application in Fault Diagnosis [J]. Journal of Chongqing Jiaotong University(Natural Science), 2017, 36(10): 119-122.
[13]	ZHANG Min1，2，XIE Yulin2，LEI Lin2，LAI Yuyang3. Numerical Research of Piezoelectric Energy Harvesting from VIV Based on XFlow [J]. Journal of Chongqing Jiaotong University(Natural Science), 2017, 36(1): 103-109.
[14]	DUAN Xiaochen, DAI Pengfei, WANG Hui. Virtual Optimization Management Technology in Construction of Subway Electromechanical Installation Project [J]. Journal of Chongqing Jiaotong University(Natural Science), 2016, 35(1): 184-190.
[15]	Zuo Yanyan, Wei Mingtao, Zeng Xianren, Zhu Chenxi. Vibration and Noise Control of Pile Centrifuge [J]. Journal of Chongqing Jiaotong University(Natural Science), 2015, 34(6): 186-190.