离合器接合过程瞬态热弹性问题研究
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- 英文论文题名：Analysis on the Transient Thermoelastic Problem in the Jointing Process of the Clutch
- 论文作者：罗先杰 ; 廖日东 ; 鲍珂
- 英文论文作者：Luo Xianjie ; Liao Ridong ; Bao Ke ; School of Mechanical Engineering ; Beijing Institute of Technology ; General Technology Department ; China North Vehicle Research Institute
- 年：2016
- 作者机构：北京理工大学机械与车辆学院;中国北方车辆研究所总体技术部;
- 论文关键词：干式离合器 ; 摩擦副 ; 有限元 ; 应力场 ; 温度场
- 英文论文关键词：dry clutch ; friction pair ; FEM ; stress field ; temperature field
- 会议召开时间：2016-10-26
- 会议录名称：2016中国汽车工程学会年会论文集
- 英文会议录名称：Proceedings of 2016 SAE-China Congress
- 语种：中文
- 分类号：U463.211
- 学会代码：QCGC
- 会议名称：2016中国汽车工程学会年会暨展览会
- 会议地点：中国上海
- 主办单位：中国汽车工程学会
- 学会名称：中国汽车工程学会
- 页数：4
- 文件大小：1474k
- 原文格式：O
- 会议级别：全国
摘要
针对干式离合器工作过程中由于摩擦产生的热应力是导致摩擦副失效的主要因素,本文基于有限元理论计算了不同工况下摩擦副滑动过程应力场和温度场,分析了离合器接合过程的瞬态热弹性行为。结果表明:接合过程中,温度随着时间先增加后降低,摩擦副径向温度场与压力分布不均匀,中间高于两侧并且梯度较大;随着初始转速差的提高,钢片径向压力和温度场的梯度增大,接触表面容易产生局部高温高压区域。
The thermal stresses,generated between the contact surfaces of dry clutch due to the frictional heating during sliding,are considered to be one of the main reasons of clutch failure.A three-dimensional model of the friction pair was developed to investigate the effect of sliding speed on contact pressure distribution and temperature field along the frictional surfaces based on the theory of FEM.The results show that the temperature was increased first and then decreased near the end of sliding.The temperature field and stress field of the friction pair in the radial distribution was not uniform,Center part of the contacting surfaces showed higher temperature than both sides and presented an obvious stress gradient.With the increase of initial relative velocity,theinhomogeneous degreeof contact stresses and temperature field along the radial direction becomes obvious.
The thermal stresses,generated between the contact surfaces of dry clutch due to the frictional heating during sliding,are considered to be one of the main reasons of clutch failure.A three-dimensional model of the friction pair was developed to investigate the effect of sliding speed on contact pressure distribution and temperature field along the frictional surfaces based on the theory of FEM.The results show that the temperature was increased first and then decreased near the end of sliding.The temperature field and stress field of the friction pair in the radial distribution was not uniform,Center part of the contacting surfaces showed higher temperature than both sides and presented an obvious stress gradient.With the increase of initial relative velocity,theinhomogeneous degreeof contact stresses and temperature field along the radial direction becomes obvious.
引文
[1]Barber J R.Thermoelastic instabilities in the sliding of comforming solids[C]//Proceedings of the Royal Society of London A:Mathematical,Physical and Engineering Sciences.The Royal Society,1969,312(1510):381-394.
[2]Abdullah 0 I,Alshabibi A M.Thermoelastic Analysis of Multi-disc Clutches Using Finite Element Method[J].Cerebrovascular Diseases,2014,26(2):156-162.
[3]张金乐,马彪,张英锋,等.湿式换档离合器温度场和应力场影响因素分析[J].北京理工大学学报,2010,30(6):660-664.
[4]张家元,宋志文,李长庚,等.基于有限元法的湿式离合器热结构耦合分析[J].机械制造,2015,53(5):4-8.
[5]Li J,Barber JR.Solution of transient thermoelastic contact problems by the fast speed expansion method[J].Wear,2008,265(3):402-410.
[6]杨世铭,陶文铨.传热学[M].4版.北京:高等教育出版社,2010.
[2]Abdullah 0 I,Alshabibi A M.Thermoelastic Analysis of Multi-disc Clutches Using Finite Element Method[J].Cerebrovascular Diseases,2014,26(2):156-162.
[3]张金乐,马彪,张英锋,等.湿式换档离合器温度场和应力场影响因素分析[J].北京理工大学学报,2010,30(6):660-664.
[4]张家元,宋志文,李长庚,等.基于有限元法的湿式离合器热结构耦合分析[J].机械制造,2015,53(5):4-8.
[5]Li J,Barber JR.Solution of transient thermoelastic contact problems by the fast speed expansion method[J].Wear,2008,265(3):402-410.
[6]杨世铭,陶文铨.传热学[M].4版.北京:高等教育出版社,2010.