Techno Press
Techno Press

Steel and Composite Structures   Volume 15, Number 4, October 2013, pages 399-423
DOI: http://dx.doi.org/10.12989/scs.2013.15.4.399
 
Thermal buckling of functionally graded sandwich plates using a new hyperbolic shear displacement model
Fatima Zohra Kettaf, Mohammed Sid Ahmed Houari, Mohamed Benguediab and Abdelouahed Tounsi

 
Abstract     [Full Text]
    In the present study, the thermal buckling behavior of functionally graded sandwich plates is studied using a new hyperbolic displacement model. Unlike any other theory, the theory is variationally consistent and gives four governing equations. Number of unknown functions involved in displacement field is only four, as against five in case of other shear deformation theories. This present model takes into account the parabolic distribution of transverse shear stresses and satisfies the condition of zero shear stresses on the top and bottom surfaces without using shear correction factor. Material properties and thermal expansion coefficient of the sandwich plate faces are assumed to be graded in the thickness direction according to a simple power-law distribution in terms of the volume fractions of the constituents. The core layer is still homogeneous and made of an isotropic material. The thermal loads are assumed as uniform, linear and non-linear temperature rises across the thickness direction. The results reveal that the volume fraction index, loading type and functionally graded layers thickness have significant influence on the thermal buckling of functionally graded sandwich plates.
 
Key Words
    new plate theory; thermal buckling; functionally graded plate; volume fraction index
 
Address
1) Fatima Zohra Kettaf and Mohamed Benguediab: Departement de Genie Mecanique, Faculte de Technologie, Universite Sidi Bel Abbes, Algerie;
2) Mohammed Sid Ahmed Houari and Abdelouahed Tounsi: Laboratoire des Structures et Materiaux Avances dans le Genie Civil et Travaux Publics, Universite de Sidi Bel Abbes, Faculte de Technologie, BP 89 Cite Ben M\'hidi 22000 Sidi Bel Abbes, Algerie;
3) Abdelouahed Tounsi: Laboratoire des Materiaux et Hydrologie, Universite de Sidi Bel Abbes, Faculte de Technologie, BP 89 Cite Ben M\'hidi 22000 Sidi Bel Abbes, Algerie;
4) Abdelouahed Tounsi: Departement de Genie Civil, Faculte de Technologie, Universite Sidi Bel Abbes, Algerie.
 

Techno-Press: Publishers of international journals and conference proceedings.       Copyright © 2019 Techno Press
P.O. Box 33, Yuseong, Daejeon 305-600 Korea, Tel: +82-42-828-7996, Fax : +82-42-828-7997, Email: technop@chol.com