Vibration analysis of cylindrical shells connected with bellows.

Abstract

For the purpose of decreasing the lower critical speed of circular cylindrical shells, which are used in centrifugal separators to enrich uranium, and rotating at higher speeds, it is considered that circular cylindrical shells are connected with bellows. Vibration analysis of circular cylindrical shells connected with 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.