抄録
We numerically investigated the tracking ability and the dynamic contact and friction forces of a 2-DOF model of a tripad slider over a random wavy disk surface in the near-contact regime. We clarified the effects of the front and rear air bearing stiffnesses, the nominal flying height and the coefficient of friction on the tracking ability and contact force. As a result, we found that the spacing variation due to the micro-waviness is strongly influenced not only by the slider dynamics but also by the distance of the head-gap position from the rear air bearing center. Finally, we investigated the effect of the length of slider rail by means of distributed air bearing model. The slider cannot follow the disk surface waviness which is shorter than the slider rail, so that the 3 short pads type tripad slider is desirable.
