Dynamic Simulation of Planar Mechanical Systems With Lubricated Bearing Clearances Using Vector-Network Methods

Abstract

This paper describes the use of a “self-formulating” computer program, PLANET II, in the simulation of mechanisms with clearances in the revolute connections. The PLANET II program is based on the vector-network method, which is discussed briefly, and requires only the mechanism description to generate the dynamic response. Mathematical models of bearing elements which take into account the effects of clearance, surface compliance, and lubricant have been developed and are included in the program. The various bearing models are described and the results of the simulations of two planar mechanisms are presented. The PLANET II program appears to be a convenient and accurate means of simulating dynamic planar systems.