Characteristics of Natural Frequencies of Steam Turbine Blades : 1st Report, Relationship on Vibration between Grouped Blades and Disk

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概要

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• The fundamental nature of the natural frequencies of blades and disk system is studied using a model of the axial vibration of steam turbine blades. The relationship between the vibrations of grouped blades and the disk is discussed in detail. The relations between the number of nodal diameters and the natural frequencies and the transition of natural frequencies according to the change of blade length are clarified. The relationships between the natural frequencies of the grouped blades on a disk and that of a blade alone are also investigated. The natural frequencies of a disk with blades tend to converge towards a constant value related to the natural frequencies of the blade only for an increasing number of nodal diameters.

• 一般社団法人日本機械学会の論文

著者

• Shiga Motohiro

  Mechanical Engineering Research Laboratory Hitachi Ltd.

• SHIGA Motohiro

  Mechanical Engineering Research Laboratory, Hitachi Ltd.

関連論文

• Prevention of Torsional Vibration in Fan Motor Shaft Systems with Multiblade Fans : 3rd Report: Method of Frequency Control using Correction Weights
• Natural Frequencies of Stator Core of Induction Motor : 1st Report, Characteristics of Radial Vibration
• Characteristics of Natural Frequencies of Steam Turbine Blades : 1st Report, Relationship on Vibration between Grouped Blades and Disk
• Vibration Characteristics of Grouped Steam Turbine Blades
• Characteristics of Natural Frequencies of Steam Turbine Blades : 3rd Report, Vibration of Bound Blades on Entire Disk Circumference
• Characteristics of Natural Frequencies of Steam Turbine Blades : 2nd Report, Influence of Disk on Vibration of Grouped Blades
• Natural Frequencies of Stator Core of Induction Motor : 2nd Report, Analysis of Radial Natural Frequencies

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