オープンクラックを有する回転軸系の有限要素モデリング : クラックに起因する2倍周波数振動によるモデルの実験的検証(<特集>D&D2009)

概要

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This paper develops and improves the concise, accurate and general purpose oriented finite element model of an open crack in the rotating shaft. The decision of the parameter involved in this crack model is discussed and proposed, and it is verified by investigating the natural frequencies in both static and rotating conditions experimentally. Furthermore, the theoretical analysis of the double-frequency vibration due to crack is performed. Both the theoretical and the experimental resonance curves of the double-frequency vibration are compared, and their quantitative agreement is confirmed. As the result, the accuracy of the developed crack model of the rotating shaft and the validity of the theoretical analysis discussed in this paper are clarified.
2010-05-25