Vibration of cylindrical shells with ring support

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Abstract

In this paper, a study on the vibration of thin cylindrical shells with ring supports is presented. The cylindrical shells have ring supports which are arbitrarily placed along the shell and which imposed a zero lateral deflection. The study is carried out using Sanders' shell theory. The governing equations are obtained using an energy functional with the Ritz method. Results are presented on the frequency characteristics, influence of ring support position and the influence of boundary conditions. The present analysis is validated by comparing results with those available in the literature.

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    Different researches were implemented on investigating the static and dynamic behavior of thin and moderately thick shell structures with different geometries using various types of solution methods including analytical (Zenkour, 2004; Shakouri and Kouchakzadeh, 2017; Alujević et al., 2017; Husain and Al-Shammari, 2020; Juhász and Szekrényes, 2020), semi-analytical (Ye et al., 2019; Monge et al., 2020; Rezaiee-Pajand et al., 2021; Pang et al., 2018; Li et al., 2018, 2019; Zhang et al., 2021a; Dastjerdi et al., 2020), and numerical (Lee and Bathe, 2010; Rezaiee-Pajand et al., 2018a, 2018b, 2019a, 2020a; Long et al., 2020; Rezaiee-Pajand and Masoodi, 2019a, 2020; Li et al., 2020; Wang et al., 2021; Zhang et al., 2021b; Sathyanarayana et al., 2021) ones in linear and nonlinear analysis. In the past, several studies were done on the linear and nonlinear vibration of cylindrical and elliptical shells implementing various numerical solution plans (Chen and Babcock, 1975; Chung, 1981; Loy and Lam, 1997; Loy et al., 1999; Shamoto and Moriwaki, 1994; Moriwaki and Shamoto, 1995; Krivoshapko and Gbaguidi-Aisse, 2016). Among the researches performed on the vibration of cylindrical and elliptical shells, a semi-analytical method namely modified mixed H–R variational principle, was employed by Qing et al. to analyze the free vibration of thick double-shell systems (Qing et al., 2006).

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