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Finite element analysis is applied to simulate the head/tape interface in a Digital Linear Tape (DLT) drive. The numerical model was verified by contact spacing measurements using a “three-bump” glass head and three-wavelength interferometry. The effect of tape speed, tension and head contour parameters (island width, island radius, and penetration) on the head/tape spacing is investigated numerically for a three-bump and a five-bump DLT-type head. A “Local Tape Wrap Angle” is defined to characterize the head/tape interface.

The hedtape spacing for high-performance tape drives is strongly affected by the geometry of the head contour. In particular, head curvature, head width, bleed slot dimensions and bleed slot edge quality can enhance or negatively affect the performance of the head/tap interface. In this paper we study the effect of edge fabrication irregularities on the performance of the headhape interface for the c~s e of single and double module tape heads.Experimental Setup

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