A NEW CRITERION FOR OCCURRENCE OF STICK-SLIP MOTION IN DRIVE MECHANISM

This paper,using Karnopp’s model of friction force and phase planemethod,studies the stick-slip motion of the flexible drive mechanism.It is explainedthat a sudden drop of friction force is the essential source of stick-slip motion when thesliding is impending.A new criterion for occurrence of stick-slip motion is established.The stick-slip region and the stable region in a parameter plane are separated bya critical parameter curve.Moreover,for the stick-slip motion of the flexible drivemechanism without viscous damping,a parameter expression is obtained.The resultsmay be used in design of the flexible drive mechanism.