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- W2364334829 abstract "Aiming at a rubbing fault between a flexible blade and a rigid casing,taking a bar blade as a studying object,the blade was simplified as a rotating cantilever beam model.In addition,its analytic model was deduced using Hamilton's principle and a variational equation.According to the decentration relation between a disc and a casing,the clearance changing function between a blade tip and a casing was derived,it was used to figure out if a rubbing occurs.Considering the effect of centrifugal rigidization,spinning softening and Coriolis force,the numerical simulation of a bladecasing rubbing was performed by using Newmark-β explicit numerical integral algorithm.The results showed that due to Coriolis force,the coupling occurs between the blade's axial displacement and its transverse displacement;after the rubbing force disappears,the free vibration frequency of the blade's axial displacement is its bending dynamic one;at high rotating speed,the influence of the blade's transverse displacement on its axial displacement is weakened,and the randomness of the blade's bending vibration becomes larger." @default.
- W2364334829 created "2016-06-24" @default.
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- W2364334829 date "2013-01-01" @default.
- W2364334829 modified "2023-09-27" @default.
- W2364334829 title "Dynamic characteristics of a continuous rotating beam model with a rubbing fault" @default.
- W2364334829 hasPublicationYear "2013" @default.
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