A quasi-three-dimensional (3D) theory considering transverse shear and normal deformation effects is presented for the static flexure of simply supported symmetric sandwich plates. The theory was developed based on the third- and fifth-order shear strain functions in terms of thickness coordinate. The displacement field accounts for nonlinear variation of in-plane displacements and transverse displacement through the plate thickness and enforces satisfying conditions of zero transverse shear stresses on the upper and lower surfaces of the plate. The present theory does not require the shear correction factor associated with the first-order shear deformation theory. Governing equations and boundary conditions were obtained using the principle of virtual work. The transverse shear and normal stresses were obtained from the stress equilibrium equations of theory of elasticity satisfying the continuity conditions at the layer interfaces and the stress-free boundary conditions at the top and bottom surfaces of the plate. The closed-form solutions for simply supported sandwich plates subjected to sinusoidal, uniform, and uniformly varying loads were obtained for various side to thickness ratios. The results of the present quasi-3D theory were compared with those of the exact theory, first- and third-order shear deformation theories, and the classical plate theory. Results showed that the present quasi-three-dimensional (3D) theory is in excellent agreement with the exact theory.


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    Titel :

    Bending Analysis of Sandwich Plates Subjected to Various Mechanical Loadings Using Quasi-Three-Dimensional Theory


    Weitere Titelangaben:

    J. Aerosp. Eng.


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    2022-07-01




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch