翼群の共振応答特性に関する研究 : 第3報,有限翼群の回転軸方向屈曲・捩り連成固有振動とその共振応答特性の研究の方法論

概要

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In a continuation of our research on resonant response characteristics of a group of blades, other aspects of which were reported by sister papers (1), (2) and (3),coupled vibrations of axial deflection and torsion of a group of blades are thoroughly investigated in the present work. From the results, we explicity and quantitatively determine the resonant stress increasing and decreasing effects in such coupled vibrations and we provide a theoretical explanation of the cause of those effects. Our whole research, consisting of two series of studies, that is, the former study^<(1)〜(3)>on uncoupled ibration of only tangential deflection and the present on coupled vibration of axial deflection and torsion, is aimed at elucidating the essence of resonant stress increasing and decreasing effects in a group of turbine blades; it should be a contribution to rotating machine's dynamics. In this paper, the first of the new series, methodologies are presented for the investigation on the resonant response characteristics of such coupled vibration, comparing with the methodologies adopted in sister papers(1),(2)and(3).
一般社団法人日本機械学会の論文
1996-06-25