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Stability Analysis of Clamped Nonhomogeneous Shells on the Elastic Foundation

100%
Sofiyev A., Deniz A., Ozyigit P., Pinarlik M.
Acta Physica Polonica A
|
2014
|
vol. 125
|
issue 2
459-461
EN
In the present study a theoretical analysis is presented for determining the stability characteristics of clamped non-homogeneous shells on the elastic foundation subjected to the lateral pressure. The basic equations have been derived for the shell, the Young modulus of which varies exponentially in the thickness direction and rests on the elastic foundation. By applying the Galerkin method to the basic equations, the expressions for the critical lateral pressure of the non-homogeneous shell with or without an elastic foundation are obtained. Finally, the effects of the non-homogeneity, elastic foundation and shell characteristics on the critical lateral pressure have been studied.
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Buckling of Shear Deformable Functionally Graded Orthotropic Cylindrical Shells under a Lateral Pressure

88%
Sofiyev A., Deniz A., Mecitoglu Z., Ozyigit P., Pinarlik M.
Acta Physica Polonica A
|
2015
|
vol. 127
|
issue 4
907-909
EN
In this study, the buckling of functionally graded (FG) orthotropic cylindrical shells with shear deformation subjected to a lateral pressure is discussed. The stability and compatibility equations for FG orthotropic cylindrical shells on the basis of first order shear deformation theory (FOSDT) are derived. The expressions for non-dimensional critical lateral pressure on the basis of FOSDT and classical shell theory (CST) are obtained. The parametric studies are carried out to investigate the influences of shear deformation, orthotropy and heterogeneity on the non-dimensional critical lateral pressure.
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