Abstract
An analytical substructure synthesis and assumed modes method is developed to investigate the effect of the flexibility of a bladed disk assembly on the vibrational mode of a flexible rotor system. In modeling the system, Coriolis forces, gyroscopic moments and centrifugal stiffening effects are taken into account. Then the coupled vibrations between the shaft and bladed disk are extensively investigated, by using simplistic models, as the shaft rotational speed and the pretwist and stagger angles of blade are varied.
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