IGTC-83 Vibrational Characteristics of Rotating Blade with Mechanical Damper(Session D-1 VIBRATION)

概要

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Recently, in order to improve power plant thermal efficiency, the turbine blade, which is the most important element of the power plant, has been used under severe conditions of high loading. Therefore, for the purpose of increasing plant reliability, the blade with friction dampers has been used. This paper presents the analysis method to predict damping characteristics of the damper blade by applying the substructure synthesis method and the harmonic balance method to the bladed disk. In order to verify the validity of the analytical method proposed here, the calculated results are compared with the rotational vibration test data. It is found that a large damping effect can be obtained by using the damper elements and the numerical results show the good agreement with the experimental data.
公益社団法人日本ガスタービン学会の論文
1995-10-00