Simple Quasi-3D and 2D Integral Shear Deformation Theories for Buckling Investigation of Advanced Composite Plates

In this paper, both 2D and quasi-3D hyperbolic integral shear deformation theories are employed for buckling analysis of functionally graded (FG) plates. The simplicity the developed theory is due to reduced number unknowns used in field displacement. proposed model takes into account effect normal transverse deformations ensures nullity stresses at top bottom surfaces studied structure without including any correction factors. Properties material microscopically inhomogeneous change continuously according a power law z direction. Navier method utilized study mechanical response simply supported FG plate under uniaxial biaxial compressive loading. numerical validated by comparing obtained results with literature data. influence thickness stretching, geometric parameters, index, different loading cases on critical load examined.