Heat Partition between the Friction Components in Multi-disc Clutch during Sliding

Xiong Cenbo; Ma Biao; Li Heyan; Zhang Fenglian; Zhu Li’an

doi:10.16578/j.issn.1004.2539.2016.10.002

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Heat Partition between the Friction Components in Multi-disc Clutch during Sliding

更新时间：2022-10-20

- Heat Partition between the Friction Components in Multi-disc Clutch during Sliding
- Vol. 40, Issue 10, Pages: 5-10(2016)
- 作者机构：
  
  1. 北京理工大学机械与车辆学院
  2. 北京电动车辆协同创新中心
  3. 江麓机电集团公司
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2016.10.002
  CLC：
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[1]熊涔博,马彪,李和言,张凤莲,朱礼安.多片离合器滑摩过程摩擦元件间的热流分配[J].机械传动,2016,40(10):5-10.

Xiong Cenbo, Ma Biao, Li Heyan, et al. Heat Partition between the Friction Components in Multi-disc Clutch during Sliding. [J]. 40(10):5-10(2016)
[1]熊涔博,马彪,李和言,张凤莲,朱礼安.多片离合器滑摩过程摩擦元件间的热流分配[J].机械传动,2016,40(10):5-10. DOI： 10.16578/j.issn.1004.2539.2016.10.002.

Xiong Cenbo, Ma Biao, Li Heyan, et al. Heat Partition between the Friction Components in Multi-disc Clutch during Sliding. [J]. 40(10):5-10(2016) DOI： 10.16578/j.issn.1004.2539.2016.10.002.

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

During the sliding process of multi- disc clutch,the heat partition coefficient between friction components is affected by the disc thickness and material property. For the discs with finite thickness,a coupled heat conduction model is established,based on which the disc temperature fields and the heat partition coefficient are obtained at the same time. The results show that,the heat partition coefficient is a constant at the very beginning and varies to another steady- state constant after a short time rise. Comparing this heat partition coefficient with the constant value obtained by the semi- infinite model,it’s found that the latter can only determine the initial heat partition coefficient. Experimental results show that,the temperature field calculated with variable heat partition coefficient is very close to the measured temperatures. However,the temperature field predicted with the constant heat partition coefficient overestimates the separator disc temperature and underestimates the temperature of the friction disc.

关键词

机械工程多片离合器热流分配系数温度场有限元法

Keywords

Mechanical engineeringMulti-disc clutchHeat partition coefficientTemperature fieldFinite element method

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