Abstract
This paper focuses on the free vibration characteristics of functionally graded sandwich cylindrical shells resting on Pasternak elastic foundation. The free vibration analysis is based on three-dimensional elasticity theory and the natural frequencies are obtained by means of generalized differential quadrature method. The two-constituent functionally graded shell consists of ceramic and metal. These constituents are graded through the thickness according to a generalized power-law distribution with four parameters. The benefit of using the considered power-law distribution is to illustrate and present useful results arising from symmetric, asymmetric and classic profiles. A detailed parametric study is carried out in order to reveal the effects of different profiles of ceramic volume fraction, two-parameter elastic foundation modulus, different geometrical parameters such as the mid radius-to-thickness ratio, length-to-mean radius ratio and the thickness of face sheets on the vibrational characteristics of the functionally graded sandwich cylindrical shell.
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