Thermal post-buckling behavior of imperfect temperature-dependent sandwich FGM plates resting on Pasternak elastic foundation
| Autor: | Kouider Halim Benrahou, Ahmed Bakora, Merbouha Barka, Abdelouahed Tounsi |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Tension (physics) Metals and Alloys 020101 civil engineering 02 engineering and technology Building and Construction Compression (physics) Power law 0201 civil engineering Stress (mechanics) Nonlinear system 020303 mechanical engineering & transports 0203 mechanical engineering Buckling Deformation (engineering) Composite material Galerkin method Civil and Structural Engineering |
| Zdroj: | Steel and Composite Structures. 22:91-112 |
| ISSN: | 1229-9367 |
| Popis: | In this paper, post-buckling behavior of sandwich plates with functionally graded (FG) face sheets under uniform temperature rise loading is examined based on both sinusoidal shear deformation theory and stress function. It is supposed that the sandwich plate is in contact with an elastic foundation during deformation, which acts in both compression and tension. Thermo-elastic non-homogeneous properties of FG layers change smoothly by the variation of power law within the thickness, and temperature dependency of material constituents is considered in the formulation. In the present development, Von Karman nonlinearity and initial geometrical imperfection of sandwich plate are also taken into account. By employing Galerkin method, analytical solutions of thermal buckling and postbuckling equilibrium paths for simply supported plates are determined. Numerical examples presented in the present study discuss the effects of gradient index, sandwich plate geometry, geometrical imperfection, temperature dependency, and the elastic foundation parameters. |
| Databáze: | OpenAIRE |
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