离合器摩擦片非稳态温度场的计算

Numerical Investigation Determination Transient Temperature Field in Friction of Clutch

本文对片式摩擦离合器的热负荷进行了理论分析、计算和试验研究。文中考虑了影响离合器热负荷的冷却油流量、油温、环境温度以及离合器几何尺寸等多种因素,对离合器的接合、脱开以及连续接合、脱开过程进行了建模和动态分析,提出了片式离合器摩擦片非稳态温度场数值计算的方法。根据试验和计算结果,推荐使用“摩擦面许用瞬时温度”作为衡量摩擦片热负荷极限的一个指标,为离合器的设计和选型提供依据。

In the paper, theorefical, numerical and experimental investigations are performed for the determination of thermal heat loads tresses in muilti-disc wet clutches. Effects of such factors as cooling oil flow, oil and environment temperatures, and geometric dimensions on the thermal strength of the clutches are taken into account. Different working situations of the clutch at conection, seperation or a sequence of such operations are modeled and analysed by the approach proposed for numerial calculation of tran- sient temperatrre distribntions of the chutches. In view of the numerical testing and results, the use of 'permissible transient temperature' which can be treated as an indica- tion of detemining ultimate thermal stresses is recommend- ed for the design and selection of the churches.