Computers and Concrete

Volume 24, Number 4, 2019, pages 347-367

DOI: 10.12989/cac.2019.24.4.347

Influences of porosity on dynamic response of FG plates resting on Winkler/Pasternak/Kerr foundation using quasi 3D HSDT

Farouk Yahia Addou , Mustapha Meradjah , Abdelmoumen Anis Bousahla , Abdelkader Benachour , Fouad Bourada , Abdelouahed Tounsi , S.R. Mahmoud

Abstract

This work investigates the effect of Winkler/Pasternak/Kerr foundation and porosity on dynamic behavior of FG plates using a simple quasi-3D hyperbolic theory. Four different patterns of porosity variations are considered in this study. The used quasi-3D hyperbolic theory is simple and easy to apply because it considers only four-unknown variables to determine the four coupled vibration responses (axial-shear-flexion-stretching). A detailed parametric study is established to evaluate the influences of gradient index, porosity parameter, stiffness of foundation parameters, mode numbers, and geometry on the natural frequencies of imperfect FG plates.

Key Words

Kerr foundation; porous FGM; quasi-3D plate model; vibration

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