踏面与盘式两种制动模式温度分布特征的模拟分析  

Simulation Analysis of Temperature Distribution Characteristics of Tread and Disc Braking Modes

作　　者：祁伟[1] 符蓉[1] 杨升 QI Wei;FU Rong;YANG Sheng(Engineering Research Center of Continuous Extrusion(Ministry of Education),Dalian Jiaotong University,Dalian Liaoning 116028,China)

机构地区：[1]大连交通大学连续挤压教育部工程研究中心,辽宁大连116028

出　　处：《润滑与密封》2024年第5期78-84,共7页Lubrication Engineering

摘　　要：探究1∶1踏面制动与缩比盘式制动得到的温度场存在偏差的原因,有利于提高利用缩比制动模式评价制动摩擦副热负荷能力的精度。基于TM-I型缩比车辆制动试验台和1∶1制动试验台,采用ADINA有限元软件,在制动压力10、15、20 kN和初速度60、80、105 km/h条件下,模拟计算2种制动模式的温度场,并分析影响2种制动模式温度偏差的因素。结果表明:1∶1踏面制动模式和缩比盘式制动模式得到的温度存在明显差别,踏面制动的温度均高于缩比盘式制动的温度;2种制动模式的温度差别随压力的变化不明显,但随制动初速度增加而明显加大;踏面制动由于摩擦面积集中,散热程度不良,随初速度从60 km/h增加到105 km/h,制动温度增加幅度为56%~77%,盘式制动由于摩擦弧长沿盘半径方向的不均匀,散热面积大,制动温度随初速度增加幅度为32%~44%。Exploring the reasons for the deviation in the temperature field obtained from the 1∶1 tread brake and the re-duced-scale disc brake is beneficial for improving the accuracy of using reduced-scale braking mode to evaluate the ther-mal load capacity of brake friction pairs.Based on the TM-I reduced-scale vehicle brake test bench and 1∶1 brake test bench,using the ADINA software,the temperature fields of the two braking modes were simulated under the conditions of braking pressure of 10 kN,15 kN,20 kN and initial speed of 60 km/h,80 km/h,105 km/h.The factors affecting the tem-perature deviation of the two braking modes were analyzed.The results show that there is a significant difference in temper-ature between the 1∶1 tread brake mode and the reduced-scale disc brake mode,and the temperature obtained by the 1∶1 tread brake is higher than that of the disc brake.The temperature difference between the two braking modes is not signifi-cant with the change of pressure,but increases significantly with the increase of initial braking speed.Due to the concen-trated friction area and poor heat dissipation of tread brake mode,the braking temperature is increased by 56%to 77%as the initial speed increases from 60 km/h to 105 km/h.For disc braking,due to the uneven friction arc length along the di-rection of disc radius,the heat dissipation area is large,and the braking temperature is increased by 32%to 44%with the increase of speed.

关 键 词：踏面制动 盘式制动 缩比制动模式 摩擦 温度场 

分 类 号：TH117[机械工程—机械设计及理论]