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Computational hygro-thermal vibration and buckling analysis of functionally graded sandwich microbeams

A.I. Aria, M.I. Friswell, Michael Friswell

Composites Part B: Engineering, Volume: 165, Pages: 785 - 797

Swansea University Author: Michael Friswell

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DOI (Published version): 10.1016/j.compositesb.2019.02.028

Abstract

In this study, for the first time, hygro-thermal behaviour of functionally graded (FG) sandwich microbeams based on nonlocal elasticity theory is investigated. Temperature-dependent material properties are considered for the FG microbeam, which are assumed to change continuously through the thicknes...

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Published in: Composites Part B: Engineering
ISSN: 13598368
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa48935
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spelling 2019-04-01T12:52:46.8225010 v2 48935 2019-02-21 Computational hygro-thermal vibration and buckling analysis of functionally graded sandwich microbeams 5894777b8f9c6e64bde3568d68078d40 Michael Friswell Michael Friswell true false 2019-02-21 FGSEN In this study, for the first time, hygro-thermal behaviour of functionally graded (FG) sandwich microbeams based on nonlocal elasticity theory is investigated. Temperature-dependent material properties are considered for the FG microbeam, which are assumed to change continuously through the thickness based on the power-law form. The equations of motion are obtained on the basis of first-order shear deformation beam theory via Hamilton's principle. The size effects are considered in the framework of the nonlocal elasticity theory of Eringen. The detailed variational and finite element procedure for FG sandwich microbeams are presented with a five-noded beam element and numerical examinations are performed. The influence of several parameters such as temperature and moisture gradients, material graduation, nonlocal parameter, face-core-face and span to depth ratios on the critical buckling temperature and the nondimensional fundamental frequencies of the FG sandwich microbeams are analysed. Based on the results of this study, temperature and moisture rise soften the FG sandwich microbeam and result in the reduction of the critical buckling load and vibration frequency. In addition, the FG sandwich microbeam with a thicker ceramic core can resist higher temperature and moisture gradients. Journal Article Composites Part B: Engineering 165 785 797 13598368 Hygro-thermal analysis, Functionally graded, Sandwich, Nonlocal elasticity, Finite element method 31 12 2019 2019-12-31 10.1016/j.compositesb.2019.02.028 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2019-04-01T12:52:46.8225010 2019-02-21T09:01:34.5985017 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised A.I. Aria 1 M.I. Friswell 2 Michael Friswell 3 0048935-21022019090631.pdf aria2019v2.pdf 2019-02-21T09:06:31.0570000 Output 837803 application/pdf Accepted Manuscript true 2020-02-15T00:00:00.0000000 true eng
title Computational hygro-thermal vibration and buckling analysis of functionally graded sandwich microbeams
spellingShingle Computational hygro-thermal vibration and buckling analysis of functionally graded sandwich microbeams
Michael Friswell
title_short Computational hygro-thermal vibration and buckling analysis of functionally graded sandwich microbeams
title_full Computational hygro-thermal vibration and buckling analysis of functionally graded sandwich microbeams
title_fullStr Computational hygro-thermal vibration and buckling analysis of functionally graded sandwich microbeams
title_full_unstemmed Computational hygro-thermal vibration and buckling analysis of functionally graded sandwich microbeams
title_sort Computational hygro-thermal vibration and buckling analysis of functionally graded sandwich microbeams
author_id_str_mv 5894777b8f9c6e64bde3568d68078d40
author_id_fullname_str_mv 5894777b8f9c6e64bde3568d68078d40_***_Michael Friswell
author Michael Friswell
author2 A.I. Aria
M.I. Friswell
Michael Friswell
format Journal article
container_title Composites Part B: Engineering
container_volume 165
container_start_page 785
publishDate 2019
institution Swansea University
issn 13598368
doi_str_mv 10.1016/j.compositesb.2019.02.028
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 1
active_str 0
description In this study, for the first time, hygro-thermal behaviour of functionally graded (FG) sandwich microbeams based on nonlocal elasticity theory is investigated. Temperature-dependent material properties are considered for the FG microbeam, which are assumed to change continuously through the thickness based on the power-law form. The equations of motion are obtained on the basis of first-order shear deformation beam theory via Hamilton's principle. The size effects are considered in the framework of the nonlocal elasticity theory of Eringen. The detailed variational and finite element procedure for FG sandwich microbeams are presented with a five-noded beam element and numerical examinations are performed. The influence of several parameters such as temperature and moisture gradients, material graduation, nonlocal parameter, face-core-face and span to depth ratios on the critical buckling temperature and the nondimensional fundamental frequencies of the FG sandwich microbeams are analysed. Based on the results of this study, temperature and moisture rise soften the FG sandwich microbeam and result in the reduction of the critical buckling load and vibration frequency. In addition, the FG sandwich microbeam with a thicker ceramic core can resist higher temperature and moisture gradients.
published_date 2019-12-31T03:59:38Z
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score 11.037581

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