多片离合器滑摩过程摩擦元件间的热流分配

发布时间：2018-03-13 03:21

本文选题：机械工程　切入点：多片离合器　出处：《机械传动》2016年10期 　论文类型：期刊论文

【摘要】：在湿式多片离合器滑摩过程中,摩擦元件之间的热流分配会受到厚度和摩擦材料特性的影响。针对有限厚摩擦元件,建立厚度方向上的有限元耦合传热模型,计算摩擦元件之间热流分配系数的变化过程,同时得到摩擦元件温度场。分析结果表明,热流分配系数会从初始值经过短时间上升,变化到另一个稳态值;将该热流分配规律与使用半无限厚模型所得的定热流分配系数对比,发现后者只能用于确定初始热流分配系数;进行离合器滑摩实验发现:使用变热流分配系数计算的钢片中平面温度上升过程非常接近实验结果,但使用固定热流分配系数则会高估实际的钢片中平面温度,而低估摩擦片温度。
[Abstract]:In the wet multi plate clutch, friction element between the effects of heat flux distribution will be affected by the thickness and friction material properties. For finite thickness friction element, coupled heat transfer finite element model is established on the thickness, the changing process of calculating the heat flux distribution coefficient of friction between the elements, at the same time. The analysis results of temperature field of friction element show that the heat flux distribution coefficient will rise after a short time from the initial value, change to another steady state value; the heat flux distribution and use of the semi infinite model the constant heat flux distribution coefficient of contrast, found only for determining the initial heat flux distribution coefficient of sliding friction clutch; experiment shows that the steel plate is calculated using variable the heat flux distribution coefficient of the surface temperature rising process is very close to the experimental results, in the steel sheet surface temperature but the use of fixed heat flux distribution coefficient will be overestimated, and underestimate The temperature of the friction plate.

【作者单位】：北京理工大学机械与车辆学院;北京电动车辆协同创新中心;江麓机电集团公司;
【基金】：国家自然科学基金(51575042) 工信部基础产品创新科研项目(VTDP3203)
【分类号】：TH133.4;TG115.5

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