On free vibration of laminated skew sandwich plates: A finite element analysis

The present work emphasizes the determination of the fundamental frequency of skew sandwich plates with orthotropic core and laminated facings using different design parameters. Finite elements CQUAD4 and CQUAD8 of MSC/NASTRAN are used for obtaining fundamental frequencies, which are validated again...

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Autores principales:	Dhotre Pavan Kumar, Srinivasa C. V.
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	fundamental frequency non-dimensional frequency parameter skew sandwich plate skew angle antisymmetric laminate fiber orientation angle Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/be1c1315108949dbab0ef7410d53342c
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spelling	oai:doaj.org-article:be1c1315108949dbab0ef7410d53342c2021-12-05T14:10:57ZOn free vibration of laminated skew sandwich plates: A finite element analysis2192-802910.1515/nleng-2021-0006https://doaj.org/article/be1c1315108949dbab0ef7410d53342c2021-04-01T00:00:00Zhttps://doi.org/10.1515/nleng-2021-0006https://doaj.org/toc/2192-8029The present work emphasizes the determination of the fundamental frequency of skew sandwich plates with orthotropic core and laminated facings using different design parameters. Finite elements CQUAD4 and CQUAD8 of MSC/NASTRAN are used for obtaining fundamental frequencies, which are validated against available literature results. The influence of the skew angle, the ratio of the length-to total thickness (a/h) of the sandwich plate, and the ratio of the thickness of the core to face sheet (tc/th) on the fundamental frequency of skew sandwich plates are studied. Also, the influence of parameters such as the number of layers in the face sheet, laminate sequence, and fiber orientation angle on the fundamental frequency of laminated skew sandwich plates have been studied. It is found that the CQUAD8 element yields better results than the CQUAD4 element in the present study. The fundamental frequencies are found to increase with the increasing skew angle. The variation in fundamental frequency is negligible when the number of layers is large in the face sheet.Dhotre Pavan KumarSrinivasa C. V.De Gruyterarticlefundamental frequencynon-dimensional frequency parameterskew sandwich plateskew angleantisymmetric laminatefiber orientation angleEngineering (General). Civil engineering (General)TA1-2040ENNonlinear Engineering, Vol 10, Iss 1, Pp 66-76 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	fundamental frequency non-dimensional frequency parameter skew sandwich plate skew angle antisymmetric laminate fiber orientation angle Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	fundamental frequency non-dimensional frequency parameter skew sandwich plate skew angle antisymmetric laminate fiber orientation angle Engineering (General). Civil engineering (General) TA1-2040 Dhotre Pavan Kumar Srinivasa C. V. On free vibration of laminated skew sandwich plates: A finite element analysis
description	The present work emphasizes the determination of the fundamental frequency of skew sandwich plates with orthotropic core and laminated facings using different design parameters. Finite elements CQUAD4 and CQUAD8 of MSC/NASTRAN are used for obtaining fundamental frequencies, which are validated against available literature results. The influence of the skew angle, the ratio of the length-to total thickness (a/h) of the sandwich plate, and the ratio of the thickness of the core to face sheet (tc/th) on the fundamental frequency of skew sandwich plates are studied. Also, the influence of parameters such as the number of layers in the face sheet, laminate sequence, and fiber orientation angle on the fundamental frequency of laminated skew sandwich plates have been studied. It is found that the CQUAD8 element yields better results than the CQUAD4 element in the present study. The fundamental frequencies are found to increase with the increasing skew angle. The variation in fundamental frequency is negligible when the number of layers is large in the face sheet.
format	article
author	Dhotre Pavan Kumar Srinivasa C. V.
author_facet	Dhotre Pavan Kumar Srinivasa C. V.
author_sort	Dhotre Pavan Kumar
title	On free vibration of laminated skew sandwich plates: A finite element analysis
title_short	On free vibration of laminated skew sandwich plates: A finite element analysis
title_full	On free vibration of laminated skew sandwich plates: A finite element analysis
title_fullStr	On free vibration of laminated skew sandwich plates: A finite element analysis
title_full_unstemmed	On free vibration of laminated skew sandwich plates: A finite element analysis
title_sort	on free vibration of laminated skew sandwich plates: a finite element analysis
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/be1c1315108949dbab0ef7410d53342c
work_keys_str_mv	AT dhotrepavankumar onfreevibrationoflaminatedskewsandwichplatesafiniteelementanalysis AT srinivasacv onfreevibrationoflaminatedskewsandwichplatesafiniteelementanalysis
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On free vibration of laminated skew sandwich plates: A finite element analysis

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