テープと接触するヘッドの摩耗形状に関する研究 : 第2報, 解析法の検討

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Changes in head geometry caused by head-to-tape contact are investigated analytically. In this paper, an original algorithm of numerical analysis for wear progress of a head is proposed, and transient changes in the head-to-tape contact condition and head contour induced by wear on the head are analyzed. Numerical analysis on the amount of head wear was carried out under the concept that the head is divided into finite the elements and these elements wear cut selectively at the high-contact-pressure region during the wear process. The validity of the algorithm was examined by comparing the estimated wear amount and head geometry with the measured ones. From these investigations, the following points were clarified. The process of head wear can be calculated by the proposed algorithm whereby finite elements are scraped selectively by the contact force acting on the head. The sized of time steps and finite elements should be determined based on the surface roughness and the stability of nordal load, respectively. When the head starts to slide on the tape, an imbalance in contact pressure causes a rapid increase in contact pressure immediately due to redistribution of contact pressure, and it becomes maximum. The sooner the head comes into contact with the tape, the larger this maximum value becomes. However, in accordance with an increase in the contact region, contact pressure does not have maximum value and increases gradually. As the result, the head wears uniformly.
一般社団法人日本機械学会の論文
1991-10-25

テープと接触するヘッドの摩耗形状に関する研究 : 第2報, 解析法の検討

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