中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2015, Vol. 34 ›› Issue (5): 160-164.DOI: 10.3969/j.issn.1674-0696.2015.05.32

• 载运工具与机电工程 • 上一篇    下一篇

基于分形几何的湿式制动器制动噪声分析

罗天洪1,王云璐2,罗文军3,林超3   

  1. 1.重庆交通大学 机电与汽车工程学院,重庆 400074;2.重庆长安汽车股份有限公司,重庆 400023;3.重庆大学 机械传动国家重点实验室,重庆 400030
  • 收稿日期:2014-02-01 修回日期:2014-04-11 出版日期:2015-11-04 发布日期:2015-11-04
  • 作者简介:罗天洪(1975—),男,四川乐至人,教授,博士,主要从事工程机械设计、机电液一体化、多领域仿真等方面的研究。E-mail: Tianhong.luo@163.com。
  • 基金资助:
    重庆市科学基金重点资助项目(035679);2012年高等学校博士学科点专项科研资助项目(20020183061)

Wet Brake Noise Analysis Based on Fractal Geometry

Luo Tianhong1, Wang Yunlu2, Luo Wenjun3, Lin Chao3   

  1. 1. School of Mechatronics & Automobile Engineering, Chongqing Jiaotong University, Chongqing 400074, China;2.Chongqing Chang’an Automobile Co.Ltd.,Chongqing 400023, China;3. The State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400030, China
  • Received:2014-02-01 Revised:2014-04-11 Online:2015-11-04 Published:2015-11-04

摘要: 湿式制动器的制动噪声产生机理与其摩擦介质的黏滑振动特性有关。为了研究摩擦系数对制动噪声的影响,建立了摩擦系数的分形几何计算模型,将摩擦系数作为变量,分别在忽略与考虑接触斑点的微粒间相互作用时,分析摩擦系数的变化对系统不稳定的影响趋势。在这两种情况下,系统的不稳定趋势完全不同。由此得到了多个参数影响系统的稳定性,在研究湿式制动器制动噪声的时候需要匹配各个参数,使制动系统趋于稳定。

关键词: 车辆工程, 湿式制动器, 摩擦系数, 分形几何, 噪声

Abstract: The generation mechanism of brake noise of wet brakes is related with the stick-slip vibration characteristic of its friction media. In order to study the effect of friction coefficient on the brake noise, the fractal geometry model of friction coefficient was established, regarding the friction coefficient as a variable. The influence trend of friction coefficients change on the instability trend of system was analyzed, when the interaction of particles between contact patterns was ignored or considered. In both cases above, the instability trends of system were completely different. So it is concluded that multiple parameters affect the stability of system. When the brake noise of wet brake is studied, each parameter needs to be consistent with each other, which makes the brake system trend to be stable.

Key words: vehicle engineering, wet brake, friction coefficient, fractal geometry, brake noise

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