IUVSTA 15th International Vacuum Congress (IVC-15), AVS 48th International Symposium (AVS-48), 11th International Conference on Solid Surfaces (ICSS-11)
    Tribology Tuesday Sessions
       Session TR+MM-TuP

Paper TR+MM-TuP2
Investigations on Anisotropic Friction Factor

Tuesday, October 30, 2001, 5:30 pm, Room 134/135

Session: Poster Session
Presenter: V.V. Tarasov, Institute of Applied Mechanics of Ural Branch RAS, Russia
Authors: V.V. Tarasov, Institute of Applied Mechanics of Ural Branch RAS, Russia
A.V. Trubachev, Institute of Applied Mechanics of Ural Branch RAS, Russia
Correspondent: Click to Email
The anisotropy effect is caused by the difference in the microgeometry characteristics of the surface and its physico-mechanical properties, depending on the direction of tracks of a tool, left after mechanical processing of the surface. In the common case in the presence of the anisotropic friction, in contrast to the isotropic one, the body moves at a certain angle to the direction of the application of the disturbing (imposed) force. With the orthotropic friction (M. Guber) there are two directions on the surface of the body; when the isotropic body is moving in these directions it is possible to know maximal and minimal values of friction coefficient, respectively. We place the axes X and Y in these directions, and designate the corresponding friction coefficients as К and k. The mathematical model was suggested for description of the body motion due to anisotropic friction for the constituents of the friction force along the axes X and Y. At the report the a mechanical simulation model is schematically presented for visual study of the peculiarities of friction and motion of the couple of bodies "anisotropic - isotropic surface". For real pairs of friction are more then 0.6, and technologically it is difficult to realize its further decrease. The appearance of the materials with controlled friction characteristics will allow better use of the properties of anisotropic friction in various tribo-conjuctions. The experiments, conducted with the use of the mechanical model, have confirmed both qualitative and quantitative correspondence of experimental and calculated results. The experiments with the use of special samples were carried out for the pairs "isotropic - anisotropic surface" without lubricant. Thus, when the steel plate was used for the experiment, the limiting coefficients were determined: from 0.123 to 0.005. The experiments with the use of special samples were carried out for the pairs "isotropic - anisotropic surface" without lubricant.