ローラチェーンの疲労強度解析と損傷評価

抄録

In this paper, the fatigue strength is considered for the roller chain which is composed of four components, that is, pin, bush, plate and roller. The finite element method (FEM) is applied to those components by focusing on the three states, which are the press fitting state, the static tensile state and the sprocket engaging state. Then, the stress amplitude and the average stress of each component are considered on the fatigue limit diagram. According to the analytical results, it is found that the fatigue crack initiation may start around the middle inner surface of the bush and also the inner plate has lower safety factor against fatigue fracture starting from the hole edge.