ISSN   1004-0595

CN  62-1224/O4

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颗粒流润滑系统力传输行为的试验研究

Experimental Study of Force Transmitting Behaviors in The Granular Lubrication System

  • 摘要: 为了研究颗粒流润滑状态下的力传输行为,设计了一个剪切平行板间颗粒流润滑的试验装置. 利用该试验装置,研究了颗粒材料、颗粒尺寸、剪切速度和颗粒湿度对颗粒流润滑状态下力传输行为的影响. 此外,试验结果主要考虑了测量得到的法向力和切向力,这些力是从下摩擦副通过颗粒润滑介质传递到上摩擦副的. 研究结果表明,测量得到的法向力和切向力随着剪切速度和颗粒湿度的增大而减小,随着颗粒尺寸的增大而增大. 颗粒流润滑比干摩擦具有较好的润滑效果,比油润滑具有更好的承载性能. 颗粒流润滑状态下的力传输路径主要决定于颗粒润滑介质之间的力链. 试验结果揭示了颗粒流润滑时的力传递机制并可以为颗粒流润滑的工业应用提供指导.

     

    Abstract: In order to study the force transmitting behaviors under the granular flow lubrication system, an experimental apparatus of granular lubrication medium sheared between the flat sliding friction pairs was developed. Using this experimental apparatus, the influence of the granular materials, granular size, velocity and humidity on the force transmission behaviors were researched. Besides, the experimental results mainly considered the measured normal force and the measured shear force, which was transmitted from bottom plate to the top plate via the granules. The study results show that the measured normal force and the measured shear force decreased with the increased shear velocity and the humidity, but increased with the increased granular size. Granular lubrication had better lubrication effect than the dry friction, and had better carrying capacity than the oil lubrication. The force transmitting paths under granular lubrication mainly depended on the force chains between the granular lubrication medium. The experimental results revealed the force transmitting mechanisms of granular flow lubrication and also provided a useful reference for the industrial application of granular flow lubrication.

     

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