In this paper the thermal buckling analysis of laminated conical shell/panel embedded with and without piezoelectric layer subjected to uniform temperature rise based on a higher-order shear deformation theory is studied using the finite element method. The longitudinal and circumferential components of the displacement field are given as a power series of the transverse coordinate and recast in such a manner that the conditions of zero transverse shear stresses are satisfied a priori. The displacement field is further modified in such a way that the displacements are C0 confirming and the finite element is a panel with nodes having 56 degrees of freedom. The effect of stacking sequence, boundary condition, slant ratio and thickness ratio on the thermal buckling temperature has been examined. The buckling temperature increases as the semi-cone angle changes from 308 to 608. The piezoelectric conical shell analysis shows an improvement in the buckling coefficient and it depends upon a fraction of piezoelectric material in the whole laminate. The results have been validated with those available in the literature.
In this paper, the sensitivity of randomness in material parameters on the thermal buckling of conical shells embedded with and without piezoelectric layer is examined. A higher order shear deformation theory is used to model the system behaviour of the conical shell. The lamina material properties are modelled as basic random variables. A deterministic finite element method in conjunction with the first-order perturbation technique is employed to handle the randomness in the material properties. Typical numerical results for the second order statistics of the linear thermal buckling load of the composite conical shells/panels with and without piezoelectric layer are obtained. Mean value results are validated with those available in the literature and standard deviation results are also validated with an independent Monte Carlo simulation.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.