Open AccessPRESSURE EFFECT ON POROUS ELEMENTS PERMEABILITY
Author(s) -
М. А. Мукутадзе,
М. А. Мукутадзе
Publication year - 2016
Publication title -
vestnik brânskogo gosudarstvennogo tehničeskogo universiteta
Language(s) - English
Resource type - Journals
ISSN - 1999-8775
DOI - 10.12737/22008
Subject(s) - lubricant , porosity , compressibility , mechanics , materials science , porous medium , permeability (electromagnetism) , lubrication , bearing (navigation) , composite material , physics , membrane , chemistry , biochemistry , astronomy
In the paper on the basis of nondimensional equations of motion of incompressible lubricant in a working gap and in porous layers of a bearing sleeve there is obtained a calculated model of a radial finite bearing with a double porous insert. A case is consi-dered when a permeability of porous layers on the boundary of gets one value. Lubricant is fed in a radial direction through a hole in a bearing body with subse-quent lubricant filtration through insert pores. As a result of the solution of the problem specified is obtained a field of rates and pressures in porous material and in a lubrication layer. There were determined analytical dependences for the constituents of a vector of a supporting force and a friction moment and also a load factor and a constant of friction were obtained. Besides, is defined a parameter characterizing a relative length of a porous constituent. It is proved that a rational running regime is achieved at the length of a porous constituent equal to 1/6 of a bearing length. The calculated specified models obtained allowed carrying out an analysis and comparison of theoretical results with experimental ones which defined a proximity of a new model to practice.