Investigating relationship between deformation behaviours and stick-slip phenomena of polymer material

Deformation behaviours of polymer materials on a wear surface affect stick-slip phenomena. This study aimed to investigate the relationship between the deformation behaviours and stick-slip phenomena of plastic materials under water-lubricated and low speed conditions on a UMT-3 tribo-tester. The characteristics of the deformation behaviours and stick-slip phenomena were analysed and compared, and their relationships were revealed. The results showed that the velocity changed the deformation behaviours to influence the stick-slip phenomena. The deformation behaviours for large heights and lengths caused larger fluctuation amplitudes and fluctuation periods of stick-slip phenomena. The knowledge gained herein provides a better understanding of stick-slip phenomena and the deformation of plastic materials, which is useful for controlling or decreasing the deformation behaviours to control or decrease stick-slip phenomena.