Thermo-mechanical post-buckling behavior of thick functionally graded plates resting on elastic foundations

被引:58
作者
Bakora, Ahmed [1 ]
Tounsi, Abdelouahed [1 ,2 ,3 ]
机构
[1] Univ Djillali Liabes Sidi Bel Abbes, Fac Technol, Dept Civil Engn, Mat & Hydrol Lab, Sidi Bel Abbes, Algeria
[2] Univ Djillali Liabes Sidi Bel Abbes, Fac Technol, Dept Genie Civil, Lab Struct & Mat Avances Genie Civil & Travaux Pu, Sidi Bel Abbes, Algeria
[3] Algerian Natl Themat Agcy Res Sci & Technol ATRST, Sidi Bel Abbes, Algeria
关键词
functionally graded materials; postbuckling; higher order shear deformation theory; elastic foundation; imperfection; HIGHER-ORDER SHEAR; FREE-VIBRATION ANALYSIS; NORMAL DEFORMATION-THEORY; NEUTRAL SURFACE POSITION; SANDWICH PLATES; FGM PLATES; RECTANGULAR-PLATES; BUCKLING ANALYSIS; BENDING ANALYSIS; REFINED THEORY;
D O I
10.12989/sem.2015.56.1.085
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Postbuckling of thick plates made of functionally graded material (FGM) subjected to in-plane compressive, thermal and thermomechanical loads is investigated in this work. It is assumed that the plate is in contact with a Pasternak-type elastic foundation during deformation. Thermomechanical non-homogeneous properties are considered to be temperature independent, and graded smoothly by the distribution of power law across the thickness in the thickness in terms of the volume fractions of constituents. By employing the higher order shear deformation plate theory together the non-linear von-Karman strain-displacement relations, the equilibrium and compatibility equations of imperfect FGM plates are derived. The Galerkin technique is used to determine the buckling loads and postbuckling equilibrium paths for simply supported plates. Numerical examples are presented to show the influences of power law index, foundation stiffness and imperfection on the buckling and postbuckling loading capacity of the plates.
引用
收藏
页码:85 / 106
页数:22
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