Abstract

For the purpose of decreasing the lower critical speed of circular cylindrical shells which are used in centrifugal separators for uranium enrichment, and rotating at higher speeds, we consider circular cylindrical shells connected to bellows. Vibration analysis of circular cylindrical shells connected to bellows is carried out by the substructure synthesis method for various numbers and dispositions of bellows, and the optimum ones are examined. Moreover, the transfer matrix method, by which the critical speeds are simply obtained, is described, and the results are examined by the substructure synthesis method.

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