Improved high-order bending analysis of double curved sandwich panels subjected to multiple loading conditions

Abstract

For the first time, the bending analysis of a double curved sandwich panel was presented which was subjected to point load, uniform distributed load on a patch, and harmonic distributed loads and was based on a new improved higher order sandwich panel theory. Since the cross-sectional warping was accurately modeled by this theory, it did not require any shear correction factor. Also, the present analysis incorporated trapezoidal shape factor (the 1+z/R terms) of a curved panel element. Geometry was used for the consideration of different radii curvatures of the face sheets, while the core was unique. Unlike most of other reference works, the core can have non-uniform thickness. The governing equations were derived by the principle of minimum potential energy. The effects of types of boundary conditions, types of applied loads, core to panel, and radii curvatures ratios on the bending response were also studied.

Numerical and experimental study on mechanical properties of glass fiber‐reinforced polymer sandwich structure with polyurethane foam‐filled M‐shaped core

“…In addition, they obtained relations in order to predict the fracture load for each rupture modes. Recently, Malekzadeh Fard et al [19] analyzed the flexural behavior of double curved sandwich panels that were exposed to concentrated, harmonic and uniform loads based on the third-order modified sandwich panel theory. Halder et al [20] studied the flexural characteristics of curved composite sandwich panels with X-Cor core.…”