多锥形摩擦副接合过程摩擦转矩特性研究  

Friction Torque Characteristics of Multi-Conical Friction Pair in Clutch Engagement Process

作　　者：刘雨薇[1] 付崇智 孙园植 靳爽 衣超[3] 程正坤 LIU Yuwei;FU Chongzhi;SUN Yuanzhi;JIN Shuang;YI Chao;CHENG Zhengkun(School of Mechanical Electronic and Information Engineering,China University of Mining and Technology,Beijing 100083,China;School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China;China North Vehicle Research Institute,Beijing 100072,China;Shenzhen Polytechnic,Shenzhen,Guangdong 518055,China)

机构地区：[1]中国矿业大学(北京)机械与电气工程学院,北京100083 [2]北京理工大学机械与车辆学院,北京100081 [3]中国北方车辆研究所,北京100072 [4]深圳职业技术学院,广东深圳518055

出　　处：《北京理工大学学报》2024年第6期635-644,共10页Transactions of Beijing Institute of Technology

基　　金：国家自然科学基金资助项目(52105232);中央高校基本科研业务费专项资金(2022YQJD04);广东省基础与应用基础研究基金海上风电联合基金项目(2022A1515240057)。

摘　　要：多锥形摩擦副是新型湿式离合器的关键部件,具有体积小、转矩传递性能好等优点.针对多锥形摩擦副的特殊构型,考虑油膜承载力、微凸体接触以及摩擦元件温升等因素,建立了接合过程中摩擦转矩的多物理场耦合数学模型并进行数值求解.计算得到的摩擦转矩与试验数据相比误差小于10%,仿真模型具有较高的准确性.基于该模型对不同加载压力和相对转速下的摩擦转矩特性进行了研究.此外,采用Box-Behnken Design试验设计,通过响应面分析得到锥面数量、锥形角度、锥形高度等锥形参数对摩擦转矩的影响规律.结果表明:摩擦转矩与加载压力呈正相关关系,当加载压力从0.1 MPa增加到0.2 MPa时,摩擦转矩峰值增大了102.2%;减小锥形角度的同时增大锥形数量可更有效地提高摩擦副的转矩传递能力,缩短同步时间.研究结果可为新型多锥形摩擦副的优化设计提供参考依据.Multi-conical friction pair is a critical component of a new type of wet clutch,possessing the advantages of small size and good transmission effect.Considering the oil film load capacity,the asperity contact,the temperature rises,and so on characteristics of the friction pair with special configurations,a coupling mathematics model was established to calculate the friction torque of the clutch engagement process for multi-physical field coupling environment,and a numerical solution was carried out.The calculated results show that the error is less than 10%between the calculated friction torque and the test data,validating the high accuracy of the simulation model.And then,the friction torque characteristics under different pressures and relative speeds were investigated based on this model.And taking the Box-Behnken Design as experiment design tool,the influences of the number of the friction cones,cone angle and cone height on friction torque were analyzed based on response surface methodology.The results show that the friction torque is positively related to the loading pressure,the peak friction torque can be increased to 102.2%when increasing the loading pressure from 0.1 MPa to 0.2 MPa.Increasing the number of the cones and reducing the cone angle can enhance the torque transmission ability of the friction pair and make the synchronization time shorten.This study results can provide basic reference for the optimal design of novel multi-conical friction pairs.

关 键 词：多锥形摩擦副 摩擦转矩 影响因素 响应面法 

分 类 号：U463.2[机械工程—车辆工程]