シュリンクフィッターを用いたセラミックスと金属の締りばめの高温結合強度に関する研究 : 第二報,締め付け圧力分布の計算

概要

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It has been shown experimentally in the previous paper that the fitting strength of the shrink fit between the ceramic shaft and the metal ring with the use of a shrink fitter does not decrease at elevated temperatures. In this paper, the distributions of the contact pressure of the shrink fit assembly were calculated in order to research the effects of the slit number of the shrink fitter and the coefficient of friction on the fitting strength. The shrink fit assembly has two contact interfaces which are between the shaft and the shrink fitter and between the shrink fitter and the outer ring. There are also two interferences at the inner contact interface and at the outer contact interface. The sum of two interferences has been kept constant in the paper. The mean contact pressure at the inner contact interface becomes greater at room temperature as the interference at the inner contact interface increases. This tendency becomes stronger with a larger coefficient of friction. The mean contact pressures at the inner contact interface are, however, equal to each other at elevated temperatures. Under a frictionless condition, the mean contact pressure is approximately equal to that from the simplified formula used in the previous work from room temperature to 100℃.
一般社団法人日本機械学会の論文
1989-12-25