TY JOUR TI MAGNETIC LIQUID IN HYDRODYNAMIC LUBRICATION MODE OF SPHERICAL SURFACES KW magnetic lubrication KW hydrodynamics KW pressure KW layer thickness KW viscosity KW velocity JO Bulletin of Bryansk state technical university AU Albagachiev, A.Y. AU Danilov , V.. PY 2016 IS 2016 PB Bryansk State Technical University