Transient behavior of imperfect bi-directional functionally graded sandwich plates under moving loads

Esmaeilzadeh, M, Golmakani, ME, Luo, Y and Bodaghi, M ORCID: https://orcid.org/0000-0002-0707-944X, 2021. Transient behavior of imperfect bi-directional functionally graded sandwich plates under moving loads. Engineering with Computers. ISSN 0177-0667

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Abstract

An investigation of dynamic behaviors of a sandwich plate containing an imperfect two dimensional functionally graded (2D-FG) core surrounded by two faces on a two-parameter elastic foundation and subjected to a moving load is carried out in this paper. The present sandwich solid is composed of a porous 2D-FG core covered by two homogenous layers. It is assumed that the middle layer has micro voids dispersed uniformly and unevenly through the layer thickness. The fundamental equations are governed within the framework of first-order-shear deformation theory by utilizing Hamilton’s principle, von-Karman geometrical nonlinearity and the principal of mixtures. Newmark direct integration procedure is implemented to transform the dynamic equations into a static form and then the kinetic dynamic relaxation numerical technique in conjunction with the finite difference discretization method are employed to solve the nonlinear partial differential governing equations. Finally, the effects of porosity fraction and scattering patterns, boundary constrains, the variation of materials’ grading indexes and elastic foundation constants on the transient performances of the plate are studied in detail.

Item Type:	Journal article
Publication Title:	Engineering with Computers
Creators:	Esmaeilzadeh, M., Golmakani, M.E., Luo, Y. and Bodaghi, M.
Publisher:	Springer Science and Business Media LLC
Date:	16 October 2021
ISSN:	0177-0667
Identifiers:	Number Type 10.1007/s00366-021-01521-5 DOI 1479969 Other
Rights:	© The Author(s) 2021. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Divisions:	Schools > School of Science and Technology
Record created by:	Linda Sullivan
Date Added:	20 Oct 2021 10:46
Last Modified:	20 Oct 2021 10:46
URI:	https://irep.ntu.ac.uk/id/eprint/44479

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