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Linear vibrations of cylindrical cantilever shells without imperfections
(НТУ "ХПІ", 2017) Taherzadeh, Hamed; Avramov, Konstantin Vitalievich
Cylindrical shells are commonly used as elements of rockets, aircrafts and others structures. The natural frequencies and eigenmodes of the linear cantilever cylindrical shells are very important to predict the dynamic behavior of complex engineering structures. The Rayleigh-Ritz method is applied to analyze the eigenfrequencies and the eigenmodes of the cantilever cylindrical shells. The Donnell’s and Sanders-Koiter shell theories with orthogonal polynomials are used to study the shell linear vibrations. The eigenfrequencies and the eigenmodes of the cantilever shell are investigated. The eigenfrequencies, which are obtained by these two theories, are close. The obtained results are compared with the data, obtained by software ANSYS. The properties of the conjugate eigenmodes are analyzed. The results of the analysis are compared with the data of finite element calculations.