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。
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.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
2015年第6期176-180,共5页
Journal of Chongqing Jiaotong University(Natural Science)
关键词
机电工程
湿式制动器
薄膜润滑
吸附层
electromechanical engineering
wet brake
thin-film lubrication
adsorption layer
