ストップホールと付加円孔によるき裂の応力集中緩和について

概要

論文の詳細を見る
It is well known that a stress concentration of a crack tip can be relaxed by holing there. The hole is called the stop drilling hole. Some researchers also have proposed other relaxation methods of the. stress concentration of the crack. The relaxation effects of the stress concentration can improve by combining with some methods. The stress concentration of the crack with the stop drilling hole can be relaxed by adding two holes near the crack tip as the holes face with each other symmetrically. Then, it has been reported that the additional holes are effective in a retardation of the fatigue crack initiation. However, the optimum sizes and locations of the additional holes, and the extent of the relaxation effect of the stress concentration are not clarified quantitatively. In this paper, the finite element simulations were carried out on the cracks with the stop drilling holes and the additional holes changing the sizes and locations of the holes. The optimum sizes and locations of the stop drilling holes and the additional holes were examined.
一般社団法人日本機械学会の論文
2008-11-25