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Microscopic dynamic observation of adhesion hysteresis friction and exploration of the influence of different pressures on friction transmission
Friction ( IF 6.8 ) Pub Date : 2020-06-04 , DOI: 10.1007/s40544-020-0372-5
Cun-ao Feng , De-kun Zhang , Kai Chen

The mechanism of adhesive friction between viscoelastic materials is a key question. In this study, the friction process of the adhesive interface between a friction lining and a wire rope is dynamically observed in real time to analyze the adhesion hysteresis friction intuitively and quantitatively. The adhesion is determined by the state of motion, while the relative displacement of the wire rope and lining is used to find the magnitude of the adhesive friction. The hysteresis friction is reflected by the internal deformation of the lining. The magnitude of the hysteresis friction is determined by the displacement difference (Δχ) in the sliding direction of two marked points at different distances from the contact surface. The results show that the adhesion friction is proportional to the loss modulus and the hysteresis friction is proportional to the ratio of the loss modulus to the square of the storage modulus (E″/(E2)). The frictional vibration first decreases and then increases with the increase in pressure. The K25 lining has the highest adhesion hysteresis friction and minimal frictional vibration. The result provides a simple and intuitive method for research into the friction transmission and vibration of viscoelastic materials.



中文翻译:

粘滞滞后摩擦的微观动态观察及不同压力对摩擦传递的影响

粘弹性材料之间的粘着摩擦机理是一个关键问题。在这项研究中,可以实时动态观察摩擦衬片和钢丝绳之间的粘合剂界面的摩擦过程,从而直观,定量地分析粘合滞后摩擦。粘附力由运动状态决定,而钢丝绳和衬里的相对位移用于确定粘附力的大小。磁滞摩擦力通过衬里的内部变形反映出来。磁滞摩擦的大小由两个标记点在距接触表面不同距离处的滑动方向上的位移差(Δχ)确定。È “/(ë ' 2))。摩擦振动首先随着压力的增加而减小,然后增加。K25衬里具有最高的附着滞后摩擦力和最小的摩擦振动。该结果为研究粘弹性材料的摩擦传递和振动提供了一种简单直观的方法。

更新日期:2020-06-04
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