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A mechanical behavior of composite plates using a simple three variable refined plate theory
Ahmed Bakoura,Ibrahim Klouche Djedid,Fouad Bourada,Abdelmoumen Anis Bousahla,S.R. Mahmoud,Abdelouahed Tounsi,Mofareh Hassan Ghazwani,Ali Alnujaie 국제구조공학회 2022 Structural Engineering and Mechanics, An Int'l Jou Vol.83 No.5
A novel three variable refined plate theory (TVRPT) is developed in this article for laminated composite plates for the first time. The theory takes into account the nonlinear variation of transverse shear deformations, and satisfies the boundary conditions of zero traction on the plate surfaces without considering the “shear correction factor”. The important characteristic of this new kinematic is that the unknowns numbers is only 3 as is employed in “classical plate theory” (CPT). The numerical results of the current theory are compared with 3D-elasticity solutions and the calculations of “first order theories” and other higher order models found in the literature.
Ahmed Bakoura,Fouad Bourada,Abdelmoumen Anis Bousahla,Abdeldjebbar Tounsi,Kouider Halim Benrahou,Abdelouahed Tounsi,Mesfer Mohammad Al-Zahrani,S.R. Mahmoud 사단법인 한국계산역학회 2021 Computers and Concrete, An International Journal Vol.27 No.1
In this article, the mechanical buckling analysis of simply-supported functionally graded plates is carried out using a higher shear deformation theory (HSDT) in conjunction with the stress function method. The proposed formulation is variationally consistent, does not use a shear correction factor and gives rise to a variation of transverse shear stress such that the transverse shear stresses vary parabolically through the thickness satisfying the surface conditions without stress of shear. The properties of the plate are supposed to vary across the thickness according to a simple power law variation in terms of volume fraction of the constituents of the material. Numerical results are obtained to study the influences of the power law index and the geometric ratio on the critical buckling load.