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- W2284747706 abstract "In this paper, we investigate the propagation characteristics of elastic guided waves in FGM spherical shells with exponentially graded material in the radial direction. A new separation of variables technique to displacements is proposed to convert the governing equations of the wave motion to the second-order ordinary differential equations with variable coefficients. By further a variables transform technique, these equations are transformed to the Whittaker equations so that analytic solutions can be obtained. For the spherical shell case, by satisfying the traction-free boundary conditions on both the inner and outer surfaces of the shell, we obtain the dispersion equations, which show that both the SH and Lamb-type wave modes are generated in the structure. The calculated dispersion curves in the functionally graded shell demonstrate a clear influence of the gradient coefficient as compared to those of the homogeneous shell, with the Lamb-type waves more sensitive to the gradient coefficient. The mode shapes and the distributions of stresses in the shells for various gradient coefficients are also presented to illustrate their dependence on the gradient coefficient." @default.
- W2284747706 created "2016-06-24" @default.
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- W2284747706 date "2016-04-01" @default.
- W2284747706 modified "2023-09-26" @default.
- W2284747706 title "Characteristics of elastic waves in FGM spherical shells, an analytical solution" @default.
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- W2284747706 doi "https://doi.org/10.1016/j.wavemoti.2016.01.001" @default.
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