Theory of stick-slip effect in friction

Friction in textile materials exhibits stick-slip effect in a pronounced way. Theoretical relationships have been derived to explain this stick-slip effect. These relationships give the velocity of the fibre pad holder, its displacement and the frictional force, measured as functions of time. The relationships clearly show that the extent of stick-slip effect depends on the difference between the static and dynamic frictional forces, and on the experimental parameters. The results also indicate why and when the phenomenon of stick-slip effect is observed/not observed. The experimental results have been found to agree well with those obtained by calculations based on the relationships derived.