Thermodynamical bending analysis of P-FG sandwich plates resting on nonlinear visco-Pasternak's elastic foundations
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Date
2023-09-22
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Abstract
In this research, the study of the thermoelastic flexural analysis of silicon carbide/Aluminum graded (FG) sandwich
2D uniform structure (plate) under harmonic sinusoidal temperature load over time is presented. The plate is modeled using a
simple two dimensional integral shear deformation plate theory. The current formulation contains an integral terms whose aim is
to reduce a number of variables compared to others similar solutions and therefore minimize the computation time. The
transverse shear stresses vary according to parabolic distribution and vanish at the free surfaces of the structure without any use
of correction factors. The external load is applied on the upper face and varying in the thickness of the plates. The structure is
supposed to be composed of "three layers" and resting on nonlinear visco-Pasternak's-foundations. The governing equations of
the system are deduced and solved via Hamilton’s principle and general solution. The computed results are compared with those
existing in the literature to validate the current formulation. The impacts of the parameters (material index, temperature
exponent, geometry ratio, time, top/bottom temperature ratio, elastic foundation type, and damping coefficient) on the dynamic
flexural response are studied.