Document Details

Document Type : Thesis 
Document Title :
BUCKLING AND FREE VIBRATION OF ADVANCED PLATES RESTING ON ELASTIC FOUNDATIONS IN HYGROTHERMAL ENVIRONMENT
الإنبعاج والذبذبات الحرة لصفائح متقدمة تستند على أساسات مرنة في بيئة حرارية-رطبة
 
Subject : Faculty of Sciences 
Document Language : Arabic 
Abstract : Buckling and free vibrations of advanced plates resting on elastic foundations in hygrothermal environment Nawal Abdullah Ali Alshehri Abstract This thesis aims to study the hygro-thermo-mechanical buckling and elastic vibration of functionally graded materials (FGM) plates resting on elastic foundations. New refined quasi-3D is used to analyze the plate. The theory has six unknowns and includes the effects due transvers shear strain and normal deformation. The present theory satisfies the zero-traction boundary conditions on the top and bottom surfaces of the plate, that means it does not need shear correction factor. Equilibrium equations and associated boundary conditions of the theory have been derived using Hamiltons principle. The material properties of the FG plate are assumed to vary along the thickness direction according to a power low distribution in terms of the volume fractions of the constituents. A metal-ceramic FG plate with simply-supported boundary conditions is considered for the analysis. Three types of thermal and hygrothermal loading, uniform, linear, and non-linear thermal and hygrothermal distribution through the thickness are considered. The closed-form solution for mechanical buckling load, the buckling temperature difference, buckling hygrothermal difference, and free frequencies of FGM plates resting on two-parameters elastic foundation are obtained using Navier-technique. Numerical results are conducted to verify the accuracy and efficiency of the present theory. The effect played by the elastic foundation parameters, gradient index, side-to-thickness ratio, plate aspect ratio and loading type on the critical buckling of FGM plates are all investigated. Excellent agreement with the known results in the previous studies has been obtained. Additional results are reported to serve as benchmarks for future comparisons with other investigators. 
Supervisor : Dr. Ashraf Mubarez Zangour Salem 
Thesis Type : Doctorate Thesis 
Publishing Year : 1439 AH
2017 AD 
Added Date : Thursday, November 30, 2017 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
نوال عبدالله الشهريAl Shehri, Nawal AbdullahResearcherDoctorate 

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