Abstract

In paper the heat dissipation in rolling bearing with elastohydrodynamic and empirical calculation methods were compared. Also the heat dissipation modeling in the rolling bearing SKF NNCF 5040CV and the lubricant Mobil gear 600 XP320 used in cold-rolling mill 2000 JSC «MMK» with MathCAD 14 and software for technical computing MATLAB was prosecuted. In the process of solving a differential equation the standard method of Runge – Kutta was used. In addition to the application package for technical computing MATLAB R2010a a computer program, based on an empirical model and allowed to make the calculation of the thermal state of the bearing assembly in its set of geometric parameters, conditions of lubrication and power loading, was created. The solution, which was obtained using elastohydrodynamic calculation method, is more deterministic, has more versatility, its practical application in solving fluid friction greatly hampered by the lack of reliable, stable and algorithms for solving problems arising in the process of calculation. The problems related to use elastohydrodynamic theory impeding it widespread practical usage was described.

Keywords

Rolling bearing, elastohydrodynamic bearing calculation, the moment of resistance, the force of rolling friction, mathematical model, thermal equivalent circuit, the coefficient of friction, heat dissipation.