Buckling analysis of piezo-magnetoelectric nanoplates in hygrothermal environment based on a novel one variable plate theory combining with higher-order nonlocal strain gradient theory.

Journal article


Malikan, Mohammad and Nguyen, Van Bac 2018. Buckling analysis of piezo-magnetoelectric nanoplates in hygrothermal environment based on a novel one variable plate theory combining with higher-order nonlocal strain gradient theory. Physica E: Low-dimensional Systems and Nanostructures. https://doi.org/10.1016/j.physe.2018.04.018
AuthorsMalikan, Mohammad and Nguyen, Van Bac
Abstract

In the present investigation, a new first-order shear deformation theory (OVFSDT) on the basis of the in-plane stability of the piezo-magnetoelectric composite nanoplate (PMEN) has been developed, and its precision has been evaluated. The OVFSDT has many advantages compared to the conventional first-order shear deformation theory (FSDT) such as needless of shear correction factors, containing less number of unknowns than the existing FSDT and strong similarities with the classical plate theory (CPT). The composite nanoplate consisted of BaTiO3-CoFe2O4, a kind of material by which coupling between piezoelectric and piezomagnetic in nanosize was established. The plate is surrounded by a motionless and stationary matrix that is embedded in a hygrothermal surround in order to keep it more stable, and to take into consideration the influences of the moisture and temperature on the plate's mechanical behavior. The governing equilibrium equations for the smart composite plate have been formulated using the higher-order nonlocal strain gradient theory within which both stress nonlocality and second strain gradient size-dependent terms are taken into account by using three independent length scale parameters. The extracted equations are solved by utilizing the analytical approaches by which numerical results are obtained with various boundary conditions. In order to evaluate the proposed theory and methods of solution, the outcomes in terms of critical buckling loads are compared with those from several available well-known references. Finally, after determining the accuracy of the results of the new plate theory, several parameters are investigated to show the influences of material properties of the ceramic composite nanoplate on the critical buckling loads.

KeywordsShear deformation theory; Piezo-magnetoelectric composite nanoplate; Gradient theory; Load balancing; Aeronautical engineering
Year2018
JournalPhysica E: Low-dimensional Systems and Nanostructures
PublisherElsevier
ISSN13869477
Digital Object Identifier (DOI)https://doi.org/10.1016/j.physe.2018.04.018
Web address (URL)http://hdl.handle.net/10545/622713
hdl:10545/622713
Publication dates17 Apr 2018
Publication process dates
Deposited01 May 2018, 14:57
Accepted11 Apr 2018
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Archived with thanks to Physica E: Low-dimensional Systems and Nanostructures

ContributorsIslamic Azad University and University of Derby
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