真空状態における回転遠心力による圧縮機動翼羽根根もと部のき裂解析

抄録

Recently, it has come that both reliability and safety are requested to the rotary machines because they are becoming largescaled together with their much higher speed of revolution aiming at better performance. To fulfill these requests, more precise stress distribution in the rotating parts under actual rotating conditions is needed. On the other hand, since the cracks may be initiated at the critical sites of rotating parts and some of them may develop into their final fracture, design concept based on the fracture mechanics should be taken into consideration. This paper deals with photoelastic analysis of the rotating discs having dovetail jointed blades with special attentions of stress distributions along the rotating blade and stress intensity factors K_I and K_II under its rotation of the vacuum condition.