Theoretical and Experimental Modelling of the Combined Dry Friction Effects

Abstract

AbstractIt is presented phenomenological models of the sliding and spinning dry friction for the circle contact spots. These dry friction models permits to take into account both the dynamics coupling of the components defining force state and the more realistic representations about dry friction characteristics and the normal contact stresses distributions in the case of combined kinematics. Introduced models are based on the replacing of the exact integral models by the appropriate Pade expansions or Zhuravlev approximations. These dry friction models enable to describe adequately the relationship between force and kinematical characteristics over the entire range of angular and linear velocities. The approximate models preserve all analytical properties of the exact integrals models as functions of the kinematics parameters. Their coefficients are numbers that can be identified from experiments. Consequently, the models based on Pade or Zhuravlev approximations may be considered as phenomenological models of combined dry friction.