NUMERICAL SIMULATIONS OF DYNAMIC SPACING AND ASPERITY CONTACT OF A SHAPED RAIL SLIDER

Numerical simulation of dynamic spacing induced by a measured track to pography and asperity contact is presented for the IBM MR-head three r ail slider. The factored implicit scheme is modified for use with the shaped rail slider. The results show that the dynamic spacing consists of low frequency components and high frequency components that are du e to, respectively, the waviness and the roughness of the track topogr aphy. When disk runout is considered and asperity contact is at the ou ter rail, the response depends on the location of the asperity with re spect to the runout. However, when the asperity contact is at the cent er rail the response is similar at all locations on the runout.