摘要:In a rolling element
system, the period of transition between motion
commencement and the attainment of steady state,
gross rolling, and termed prerolling is of common
concern to many engineering applications. This
region is marked by hysteresis friction
behavior, with a characteristic
friction-displacement curve, which is in
particular relevant to motion characterization
and control issues. In a previous paper, the authors carried out a
theoretical analysis of tractive prerolling,
leading to a model for simulating this
phenomenon. The present paper is dedicated to
the experimental investigation of tractive
prerolling friction behavior, including
validation of the theoretical model. Firstly, a
kinematic analysis of the rolling motion in
V-grooved tracks is carried out. Secondly, the
influence of the normal load on the frictional
behavior, in prerolling up to the attainment of
gross rolling, is investigated on a dedicated
test setup. Finally, the newly developed
theoretical model is validated by comparison
with the experimental results. Satisfactory
agreement is obtained between theory and
experiment.