Techno Press
Techno Press

Steel and Composite Structures   Volume 22, Number 5, December10 2016, pages 975-999
A new five unknown quasi-3D type HSDT for thermomechanical bending analysis of FGM sandwich plates
Abdeldjalil Benbakhti, Mohamed Bachir Bouiadjra, Noureddine Retiel and Abdelouahed Tounsi

Abstract     [Full Text]
    This work investigates a thermomechanical bending analysis of functionally graded sandwich plates by proposing a novel quasi-3D type higher order shear deformation theory (HSDT). The mathematical model introduces only 5 variables as the first order shear deformation theory (FSDT). Unlike the conventional HSDT, the present one presents a novel displacement field which includes undetermined integral variables. The mechanical properties of functionally graded layers of the plate are supposed to change in the thickness direction according to a power law distribution. The core layer is still homogeneous and made of an isotropic ceramic material. The governing equations for the thermomechanical bending investigation are obtained through the principle of virtual work and solved via Navier-type method. Interesting results are determined and compared with quasi-3D and 2D HSDTs. The influences of functionally graded material (FGM) layer thickness, power law index, layer thickness ratio, thickness ratio and aspect ratio on the deflections and stresses of functionally graded sandwich plates are discussed.
Key Words
    sandwich plate; thermomechanical; analytical modeling; functionally graded material; stretching effect
(1) Abdeldjalil Benbakhti, Noureddine Retiel:
Faculté des Sciences et de la Technologie, Département de Génie Mécanique, University Abdelhamid Ibn Badis, Mostaganem, 27000, Algérie;
(2) Mohamed Bachir Bouiadjra:
Laboratoire des Structures et Matériaux Avancés dans le Génie Civil et Travaux Publics, Université de Sidi Bel Abbes, Faculté de Technologie, Département de génie civil, Algeria;
(3) Abdelouahed Tounsi:
Material and Hydrology Laboratory, University of Sidi Bel Abbes, Faculty of Technology, Civil Engineering Department, Algeria.

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