513 周期加振時のクラックロータの有限要素解析(振動挙動・診断,OS-4 ロータダイナミクス)

概要

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It is very dangerous to continue operation of a cracked rotating machinery since the crack grows with time and finally cause a catastrophic accident. Recently, we proposed a method to detect the crack by applying a periodical external excitation force on the cracked rotor system, and clarified that various kinds of resonances which do not occur in a symmetric rotor or a asymmetric rotor occur due to the unique characteristics of rotor crack. In this paper, we investigate the vibration characteristics of the cracked rotor with applying the periodic excitation force by using finite element method. We clarified the effect of the depth and crack position on the vibration characteristics of the nonlinear resonances due to the rotor crack.
一般社団法人日本機械学会の論文
2004-09-27