Asymmetric buckling analysis of the circular FGM plates with temperature-dependent properties under elastic medium

Subject Areas : Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering

علیرضا  نداف اسکویی ¹ (دانشیار، دانشکده مکانیک، دانشگاه جامع امام حسین (ع)، تهران)
هادی  محمدی هویه ² (مدرس، گروه مکانیک، دانشگاه ایوانکی، سمنان)
وحید  علایی ³ (کارشناس ارشد، دانشکده مکانیک، دانشگاه جامع امام حسین (ع)، تهران)
خداداد  واحدی ⁴ (دانشیار، دانشکده مکانیک، دانشگاه جامع امام حسین (ع)، تهران)

Received: 2016-01-22 Accepted : 2016-10-07 Published : 2016-07-22

Keywords: Elastic foundation, Functionally Graded Materials, Temperature-dependency, Circular plates, Asymmetric buckling,

Abstract :

In this paper, Asymmetric buckling analysis of functionally graded (FG) Circular plates with temperature dependent property that subjected to the uniform radial compression and thermal loading is investigated. This plate is on an elastic medium that simulated by Winkler and Pasternak foundation. Mechanical properties of the plate are assumed to vary nonlinearly by temperature change. The equilibrium equations are obtained using the classical plate theory (CPT), Von Karman geometric nonlinearity and virtual displacement method. Existence of bifurcation buckling is examined and stability equations are obtained by means of the adjacent equilibrium criterion. The effects of elastic foundation coefficient, thickness to radius, power law index, and temperature-dependency of the material properties on critical buckling load of FG plates are presented. The results of the present work have been compared with the results of other investigator and the results of the comparison are very good. It is found that by increasing temperature, critical buckling load decreases. It is also concluded that the critical buckling load of (FG) Circular plates increases with an increase in the Winkler and Pasternak constants of elastic foundation.

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