Abstract
The chapter explores the relationships developed for the deflection values of sandwich plates in terms of the corresponding Kirchhoff plates for simply supported polygonal plates under any transverse load or for simply supported and clamped circular plates under any axisymmetric load. The chapter also explores the bending solutions of the first-order plate theory (FSDT) for functionally graded circular plates in terms of the deflections of isotropic circular plates based on the classical plate theory (CPT). Furthermore, the chapter explains the buckling load of sandwich plates based on the FSDT in terms of those of the Kirchhoff plates based on the CPT under uniform in-plane compressive load for simply supported general polygonal plates and simply supported and clamped circular plates. Finally, the chapter explains the vibration frequencies of simply supported sandwich polygonal plates in terms of those of polygonal Kirchhoff plates with the same boundary conditions and loads.
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