Free vibration and buckling of porous power-law and sigmoid functionally graded sandwich plates using a simple higher-order shear deformation theory

被引:99
作者
Daikh, Ahmed Amine [1 ]
Zenkour, Ashraf M. [2 ,3 ]
机构
[1] Univ Djillali Liabes Sidi Bel Abbes, Fac Technol, Mech Struct & Solids Lab, Sidi Bel Abbes, Algeria
[2] King Abdulaziz Univ, Dept Math, Fac Sci, Jeddah 21589, Saudi Arabia
[3] Kafrelsheikh Univ, Dept Math, Fac Sci, Kafrelsheikh 33516, Egypt
来源
MATERIALS RESEARCH EXPRESS | 2019年 / 6卷 / 11期
关键词
porous sandwich plate; P-FGM; S-FGM; free vibration; buckling; simple higher-order shear deformation theory; FACE SHEETS; NONLINEAR VIBRATION; NATURAL FREQUENCIES; TRANSVERSE-SHEAR; EFFICIENT; SKINS;
D O I
10.1088/2053-1591/ab48a9
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Free vibration and mechanical buckling of porous functionally graded (FG) sandwich plates is studied in this paper by using a new and simple higher-order shear deformation theory (SHSDT). The present theory accounts for the distribution of transvers shear stresses that satisfy the free transverse shear stress conditions on the upper and lower surfaces of the sandwich plate. The FG sandwich plate is composed of three layers, an isotropic core and two FG face layers. Four porosities distribution and new model of FG sandwich plates based on a sigmoid function are presented. The boundary conditions for the FG sandwich plate are assumed to be simply-supported. Navier's solution is used to obtain the closed-form solutions of FG sandwich plates. The effect of porosity, sandwich plate geometry and inhomogeneity parameter on the buckling and free vibration of FG sandwich plate is investigated.
引用
收藏
页数:18
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