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Nonlocal three-dimensional elasticity analysis of moderately thick porous functionally graded plates in a hygro-thermal environment

Abstract

This work performs a novel quasi three-dimensional (3D) bending analysis for a moderately thick functionally graded material (FGM) made of nanoceramics and metal powders, in presence of porosities due to some incorrect manufacturing processes. Such porosities can appear within the plate in two forms, namely, even and uneven distributions. The modeled system assumes a polymer matrix where both shear and transverse factors coexist. The bending equations are obtained by using the Hamiltonian principle. In order to apply the quantum effects for the nanosystem, the well-known nonlocal theory of Eringen is simply assumed, while checking for its numerical accuracy. A physically-consistent analysis of the nanostructures would investigate possible surrounding effects. Thus, the thermal and humidity influence is accounted for the 3D problem, whose governing equations are solved through a semi-analytical polynomial method (SAPM), as recently proposed in literature for different applications. The proposed method is based on a simple procedure with very accurate numerical outcomes, whose performance is checked against the available literature. After computing the deflection relations, a systematic study is performed for the bending response of nanoporous FGMs in a hygro-thermal surrounding environment, with promising results for practical applications.

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Authors (4)

Details

Category:
Articles
Type:
artykuły w czasopismach
Published in:
COMPOSITE STRUCTURES no. 255,
ISSN: 0263-8223
Language:
English
Publication year:
2021
Bibliographic description:
Dastjerdi S., Malikan M., Dimitri R., Tornabene F.: Nonlocal three-dimensional elasticity analysis of moderately thick porous functionally graded plates in a hygro-thermal environment// COMPOSITE STRUCTURES -Vol. 255, (2021), s.112925-
DOI:
Digital Object Identifier (open in new tab) 10.1016/j.compstruct.2020.112925
Verified by:
Gdańsk University of Technology

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