A new criterion for occurrence of stick-slip motion in drive mechanism

This paper, using Karnopp's model of friction force and phase plane method, studies the stick-slip motion of the flexible drive mechanism. It is expla ined that a sudden drop of friction force is the essential source of stick- slip motion when the sliding is impending. A new criterion for occurrence o f stick-slip motion is established. The stick-slip region and the stable re gion in a parameter plane are separated by a critical parameter curve. More over, for the stick-slip motion of the flexible drive mechanism without vis cous damping, a parameter expression is obtained. The results may be used i n design of the flexible drive mechanism.