摘要
离合器摩擦片表面温度是离合器传递转矩最直接的影响因素,对修正离合器参数、优化离合器控制具有重要意义。为了解决离合器摩擦片表面工作温度难以测量这一技术难题,在研究影响离合器摩擦片表面温度的主要因素时,通过设计离合器摩擦片表面温度无线采集系统,得到了不同工况下摩擦片表面温度沿径向和周向变化的数据,然后在仿真软件ANSYS中建立了摩擦片有限元模型,并进行热分析,仿真结果与试验数据显示:摩擦片表面温度主要沿径向变化,滑磨产生的热流量是导致摩擦片温升的主要因素,通过修正对流换热系数能提高摩擦片温度的计算精度,将仿真结果与试验数据的误差降低在3.75%以内,而热辐射对于摩擦片温度的影响可以忽略不计。通过对摩擦片温度场变化规律和温度影响因素的分析,对于离合器结构设计、离合器温度模型优化以及离合器控制具有参考价值。
Clutch temperature is a key factor affecting the performance of the clutch and it is of great significance to establish the model of clutch temperature for the correction of parameters and the optimization of clutch control. To measure the friction surface temperature and to analyze the influencing factors of temperature,a temperature acquisition system was designed based on the wireless transmission technology which can collect the surface temperature under different radius,circumferential and working conditions. Then,the finite element model of friction disc was created by ANSYS. The experimental date and simulation results show that heat flux is a major factor leading to temperature rise,the simulation accuracy can be improved by correcting convection heat transfer coefficient,and the error can be reduced about 3. 75%,and the influence of thermal radiation on temperature can beignored. By analyzing the change rule of temperature and the factors influencing the temperature,it has great significance to design clutch structure,to establish clutch temperature model and to optimize clutch control.
出处
《广西大学学报（自然科学版）》
CAS
北大核心
2016年第2期451-459,共9页
Journal of Guangxi University（Natural Science Edition）
基金
国家自然科学基金资助项目(51275038)
