关节轴承瞬态温度场的红外测量与重建研究
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摘要
对推力关节轴承进行滑动摩擦试验,在受轴向载荷时,利用红外热像仪和红外测温仪分别测量了轴承侧表面温度及滑动接触区域温度;考虑轴承游隙,建立了结构-热顺序耦合分析模型,结合测得的动态摩擦因数实现了温度场的重建。结果表明:所建立的温度场分析模型满足分析需要;轴向载荷下推力关节轴承的摩擦热产生于球面底端,轴承外表面与滑动接触区域存在较大温差,该温差随着摩擦生热率的增加有变大趋势。
The sliding friction test is carried out for thrust spherical plain bearings,the temperature of lateral surface and sliding contact area of axially loaded bearings are measured using thermal infrared imager and infrared thermometer. A structure- thermal sequential coupling analysis model is built with considering clearance of bearings,and then the temperature field is rebuilt combining with measured dynamic frictional coefficient. The results show that the analysis model for temperature field meets the analysis requirements. The frictional heat of thrust spherical plain bearings under axial load concentrates at the bottom of spherical surface,there is large temperature difference between outer surface and sliding contact area,and the temperature difference increases with the increase of friction heat generation rate.
The sliding friction test is carried out for thrust spherical plain bearings,the temperature of lateral surface and sliding contact area of axially loaded bearings are measured using thermal infrared imager and infrared thermometer. A structure- thermal sequential coupling analysis model is built with considering clearance of bearings,and then the temperature field is rebuilt combining with measured dynamic frictional coefficient. The results show that the analysis model for temperature field meets the analysis requirements. The frictional heat of thrust spherical plain bearings under axial load concentrates at the bottom of spherical surface,there is large temperature difference between outer surface and sliding contact area,and the temperature difference increases with the increase of friction heat generation rate.
引文
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[3]Yang Y L,Zu D L,Zhang R J,et al.Effects of Friction Heat on the Tribological Properties of the Woven Self-Lubricating Liner[J].Chinese Journal of Mechanical Engineering,2009,22(6):918-924.
[4]Qiu M,Li Y,Chen L,et al.Effects of Rare Earth Treatment on Tribological Properties of Self-Lubricating Spherical Plain Bearings[J].Wear,2013,305(1/2):274-279.
[5]霍亚军,尹忠慰,李虎林,等.基于ABAQUS的关节轴承径向受载试验的热力耦合分析[J].轴承,2015(1):7-11,50.
[6]徐建宁,屈文涛,赵宁.止推滑动轴承的温度场和热变形分析[J].润滑与密封,2006(8):120-121,148.
[7]Shen X,Liu Y,Cao L,et al.Numerical Simulation of Sliding Wear for Self-Lubricating Spherical Plain Bearings[J].Journal of Materials Research and Technology,2012,1(1):8-12.
[8]Kennedy Jr,Francis E.Thermal and Thermomechanical Effects in Dry Sliding[J].Wear,1984,100(1/3):453-476.
[9]崔朝探.空间关节的轴承间隙演化规律研究[D].秦皇岛:燕山大学,2014.
[10]Chen X M,Wen H,Wang Q W,et al.The Research of Industrial Brake Temperature Measurement Based on Nano-Materials and Nano-Technology[J].Key Engineering Materials,2014(609/610):1 254-1 259.
[11]机械工程材料性能数据手册编委会.机械工程材料性能数据手册[M].北京:机械工业出版社,1995.
[12]张靖周.高等传热学[M].北京:科学出版社,2009:32.
[13]俞建卫,王礼飞,魏巍.关节轴承摩擦温度场计算方法[J].中国机械工程,2015,26(10):1 284-1 288.
[14]Kasem H,Dufr N P,Desplanques Y,et al.On the Use of Calcium Fluoride as an Infrared-Transparent First Body for In Situ Temperature Measurements in Sliding Contact[J].Tribology Letters,2011,42(1):27-36.