ABSTRACT
ABSTRACT: Squeeze film damper can attenuate vibration in the linear rolling guide of CNC machine tool. The damping effect occurs when the damper filled with very thin film approaches the rail. In this paper, squeeze film damping characteristics between the damper and rail are investigated. The mathematical models of squeeze film pressure and damping coefficient are established based on the two-dimensional Reynolds equation which is solved by using the finite difference method. Numerical simulations are performed to analyze influence of the damper parameters on the film pressure and damping coefficient. The results show that the film pressure and damping coefficient increase with the decreasing values of film thickness and increasing values of film length-width ratio of the damper, which can be as a reference for designers of squeeze film damper.
