翼群の共振応答特性に関する研究 : 第4報, 有限翼群の回転軸方向屈曲・振り連成固有振動の基本特性

抄録

Prior to investigating the resonant response characteristics of a finite group of blades, such as resonant stress increasing and decreasing effects, fundamental characteristics of the natural vibration in question must be elucidated. By means of the method described in Chapter 6 of the 3rd report, "coupled natural Vibration of axial deflection and torsion" is solved for the "shroud/blade thickness ratio" which is purposely changed from zero to infinity. The results are analyzed and itemized in comparison with tangential flexural vibration. Thus, the fundamental characteristics of natural vibration of such a coupled vibration are clearly shown.