某轻型履带车辆起步工况下主离合器接合过程传动轴疲劳损伤研究  

Research on Fatigue Damage of Transmission Shaft in the Process of Main Clutch Engagement During Starting of a Light Tracked Vehicle

作　　者：赵梓烨 刘海鸥[1] 陈慧岩[1] 徐宜[2] ZHAO Zi-ye;LIU Hai-ou;CHEN Hui-yan;XU Yi(Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China;China North Vehicle Research Institute,Beijing 100072,China)

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]中国北方车辆研究所,北京100072

出　　处：《兵工学报》2018年第8期1466-1472,共7页Acta Armamentarii

基　　金：工业和信息化部基础研究项目(3030021221505)

摘　　要：为确保履带车辆传动系统的疲劳可靠性,在车辆起步工况下对传动轴进行疲劳分析,确定了主离合器在接合过程中影响传动系统产生疲劳损伤的主要因素。建立车辆起步阶段动力学模型,获得整车传动系统载荷与主离合器接合位移关系。搭建履带车辆动态转矩测试平台,获取典型工况任务下传动系统试验数据。设计典型工况下主离合器的步进接合动态测试试验,采集传动系统在主离合器接合过程中传递的转矩数据。采用雨流计数法和雨流滤波法对原始数据进行处理,应用线性疲劳累计损伤理论,对主离合器在不同接合位移时的传动系统传动轴进行疲劳损伤计算,确定传动系统产生最大疲劳损伤时对应主离合器的接合状态。研究结果表明,主离合器接合过程中从动盘轴向移动速率变化最大的位移点是传动轴产生最大疲劳损伤的危险点,占全部接合过程总损伤的73.86%,损伤程度为接合过程中主离合器同步状态的2.87倍。This paper tries to figure out the fatigue damage of transmission shaft of transmission system caused by the engagement of main clutch under typical operating conditions,and then analyze the main factors causing the fatigue damage of transmission system. A dynamic model of vehicle starting is built to obtain the relationship between the vehicle transmission system load and the engagement displacement value of main clutch. A testing platform of tracked vehicle is built to get the test data of transmission system under typical operating conditions. The dynamic tests of stepper engagement of main clutch are designed to collect the torque data transmitted by the transmission system in the process of main clutch engagement. Finally,the rain-flow counting method and rain-flow filtering method are used to process the original data,and then the linear fatigue cumulative damage theory is used to calculate the fatigue damage of transmission shaft in transmission system to determine the engaging state of main clutch when the maxi-mum fatigue damage is caused to the transmission system. The results show that the displacement point at which the axial moving speed of the driven plate changes the most is the danger point when the maximum fatigue damage is caused to the transmission shaft,which is accounted for 73. 86% of the total damage,and the damage degree is 2. 87 times of the main clutch fully synchronized state.

关 键 词：履带车辆 传动系统 干式主离合器 动态转矩测试 疲劳损伤 

分 类 号：TJ810.321[兵器科学与技术—武器系统与运用工程]