A Dynamic Analysis of the Plane Crank-and-Rocker Mechanisms with Clearances

Abstract

The equations of motion of the plane four-bar mechanisms have been derived for all of possible numbers and positions of clearance-connections except the input-shaft position when the mechanisms rotate at constant speeds in a vertical plane. Applying the equations to a crank-and-rocker mechanism, the effects of the numbers and positions of clearance-connections, the magnitudes of clearances and the crank-speed upon the relative motions of pairing elements, the dynamic deviations of rocker angle and the input torque have been discussed together with experiments.