ROLLING FRICTION IN A MICRO TRIBOSYSTEM

Dumitru OLARU¹

dolaru@mec.tuiasi.ro

Gheorghe PRISACARU¹

dgprisaca@mec.tuiasi.ro

Peter LORENZ²

lorenz@htw-saarland.de

¹ "Gh. Asachi" Technical University of Iasi, Romania

² HTW des Saarlandes, Saarbrucken, Germany

Abstract. These authors developed a theoretical model and an experimental procedure to evaluate the rolling friction coefficient in a micro rolling tribosystem. The proposed procedure is based on integration of the free oscillations equations of a micro ball on a concave spherical surface. The rolling friction coefficient was evaluated on the base of the number and amplitude of the ball oscillations, experimentally determined,. The influence of the atmospheric condensed water on the rolling friction coefficient at the level of micro rolling tribosystems was evidenced as well.
 

Keywords: microsystem, ball, rolling friction coefficient, equations of rolling oscillations