Postbuckling analysis of pressure-loaded functionally graded cylindrical shells in thermal environments

Postbuckling analysis of axially-loaded functionally graded cylindrical shells in thermal environments

Thermal postbuckling behavior of functionally graded cylindrical shells with temperature-dependent properties

Postbuckling of FGM plates with piezoelectric actuators under thermo-electro-mechanical loadings

Hygrothermal effects on the postbuckling of shear deformable laminated plates

Based on the boundary layer theory for the buckling of thin elastic shells suggested in ref. [14]. the buckling and postbuckling behavior of clamped circular cylindrical shells under lateral or hydrostatic pressure is studied applying singular perturbation method by taking deflection as perturbation parameter. The effects of initial geometric imperfection are also considered. Some numerical results for perfect and imperfect cylindrical shells are given. The analytical results obtained are compared with some experimental data in detail, which shows that both are rather coincident.

A boundary layer theory for the buckling of thin cylindrical shells under external pressure

In this paper, applving perturbation method to von Karman nonlinear large deflection equations of plates by taking deflection as perturbation parameter, the posibuckling behavior of simply supported rectangular plates under uniaxial compresion is investigated. Two types of in-plane boundary conditions are now considered and the effects of initial imperfections are also studied. It is found that the theoretical results are in good agreement with experiments.

Perturbation analyses for the postbuckling of simply supported rectangular plates under uniaxial compression

The buckling and postbuckling behaviors of perfect and imperfect antisymmetrically angle-ply laminated composite plates under uniaxial compression have been studied by perturbation technique which takes deflection as its perturbation parameter.

Buckling and postbuckling behavior of antisymmetrically angle-ply laminated composite plates

Postbuckling behaviour of perfect and imperfect rectangular plates under biaxial compression combined with lateral pressure is considered. Based on the nonlinear large deflection equations of von Karman plates, the lateral pressure is first converted into an initial deflection by the Galerkin method. The postbuckling behaviour of simply-supported rectangular plates under biaxial compression combined with lateral pressure is then studied using a perturbation technique, taking deflection as its perturbation parameter. Through comparison, it is found that a discrepancy exists between the two cases; with and without lateral pressure. In the case of rectangular plates under uniaxial compression combined with lateral pressure, it is seen that the results obtained from the present paper are quite in accord with other experiments.

Postbuckling behaviour of rectangular plates under combined loading

Functionally graded materials (FGMs) are microscopically inhomogeneous composites usually made from a mixture of metals and ceramics. By gradually varying the volume fraction of the constituent materials, their material properties exhibit a smooth and continuous change with respect to the spatial location, thus void of interface problems that are usually associated with fibre-reinforced composites and with less severe thermal stress concentrations. FGMs are now developed for general use as structural components in extremely high temperature environments. This article reviews recent investigations concerning the responses of functionally graded plates and shells. The discussion focuses on three major topics: (1) linear and nonlinear bending; (2) buckling and postbuckling; (3) free and forced vibration. Considerations are given both to thin and moderately thick plates and shells having various boundary conditions and subjected to mechanical and/or thermal loadings. Future research needs are highlighted.

Shen Hui-shen

Papers

A boundary layer theory for the buckling of thin cylindrical shells under external pressure

Perturbation analyses for the postbuckling of simply supported rectangular plates under uniaxial compression

Buckling and postbuckling behavior of antisymmetrically angle-ply laminated composite plates

Postbuckling behaviour of rectangular plates under combined loading

Bending, buckling and vibration of functionally graded plates and shells