Dynamic analyses of head sliders in near-contact region using MGL equation : CIP and perturbation method for wavy excitation

Abstract

In this paper the cubic interpolated propagation (CIP) method, which is an effective numerical scheme for differential equations including an advection term and the perturbation method, are employed in the dynamic analyses of the ultra-thin gas film lubrication using the molecular gas-film lubrication (MGL) equation. Pressure qenerations and the 2-DOF slider dynamics for the spacing of several tens of nanometers caused by a waving disk are investigated, and it is found that i) the CIP method is effective in the analyses of the near contact MGL dynamics, and ii) the infinite bearing number approximation is useful for the dynamic analysis of ultra thin spacings.