502 翼・ディスク系の回転振動試験のシミュレーション解析(翼振動・羽根車,OS-4 ロータダイナミクス)

概要

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Recently, the blade with friction damper has been used in the steam turbine and gas turbine to improve the blade reliability. In designing the damper blade, the vibration characteristics can be predicted by the analysis and the optimal damper shape is determined. As for the verification test of the damper blades, sometimes rainbow test, in which several kinds of damper blades are installed on the desk, is carried out to reduce the cost of test. It is probable that the vibration characteristics of each damper blade cannot be identified from the rainbow test because of the coupling effect through the disk and mistuning. In this paper, the bladed-disk systems of damper blades are represented by the equivalent spring mass system and the simulation of the rainbow test is carried out to clarify the condition from which the vibration characteristics of each blade is identified.
社団法人日本機械学会の論文
2004-09-27