シュラウドでつづられたタービン翼群の連成振動に関する研究 : 第1報, 接線方向屈曲固有振動に及ぼすシュラウドの伸縮と曲げの影響

概要

論文の詳細を見る
In this report, the vibration system of 6 blades per shroud is analyzed by the transfer matrix method to show inherent characteristics of this construction of blades. As a result, it is proved that the tangential vibration is governed by two fundamental factors, one is the longitudinal flexibility of shroud, which gives the sequence of out-of-phase vibrations of blades from 1 node to 5 nodes in relation to the frequency, another is bending flexibility of shroud, which gives the sequence of outof-phase vibrations from 5 nodes to 1 node. The former fully governs the vibration behavior in the lower blade height region. The latter predominates in the higher blade height region, however, the effect of longitudinal flexibility of shroud still remains in this region and produces an irregular sequence and mode shape of out of-phase vibrations of blades.
一般社団法人日本機械学会の論文
1999-07-25