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김병옥(B.O.Kim),김봉균(B.K.Kim),김용철(Y.C.Kim) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.11_1
In this study, the effects of initial shaft deflection on the unbalance response of a single mass rotor have been investigated with an experimental analysis. The analysis determined the amplitude, phase angle, and peak response speed for various combinations of initial deflection and unbalance. The response of a rotor with initial deflection is quite different from that with mass unbalance only. If the initial deflection and unbalance were exactly out of phase, there occurs a self-balancing-speed, where the amplitude was zero. The self-balancing-speed was corresponding to the square root of the ratio of initial deflection amplitude to unbalance eccentricity.<br/>
김용철(Y.C.Kim),김봉균(B.K.Kim),김병옥(B.O.Kim) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.6_2
In this study, the effects of residual shaft bow and flexble bearings of a single disk rotor are investigated. The stiffness coefficients of a shaft with initial deflection are different from those of a straight shaft. The stiffness coefficients are calculated using Castigliano theorem considering initial deflection. The stiffness coefficients, Which are obtained in this study, are in good agreement with FEM results. The speed which causes zero amplitude is shown to be the square root of the ratio of residual bow amplitude to unbalance eccentricity in the case of rigid bearings and isotropic flexible bearings, but not in anisotropic bearings.<br/>