Influence of plywood grain direction on sandwich panel bending properties

This paper investigates the influence of plywood grain direction on bending properties of a sandwich panel, as well as on stress distribution in each layer. Experimental sandwich panels (tnom= 29 mm) were made of two three-ply plywood panels and a rigid PVC core between them. Grain directions of ply...

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Autores principales:	Jaroslav Kljak, Mladen Brezović, Alan Antonović
Formato:	article
Lenguaje:	EN
Publicado:	University of Zagreb, Faculty of Forestry and Wood Technology 2009
Materias:	sandwich panel veneer plywood stress FEM structural construction Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/47424c39c8f7451993e4f10e23273f6e
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id	oai:doaj.org-article:47424c39c8f7451993e4f10e23273f6e
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spelling	oai:doaj.org-article:47424c39c8f7451993e4f10e23273f6e2021-12-02T06:30:14ZInfluence of plywood grain direction on sandwich panel bending properties0012-6772https://doaj.org/article/47424c39c8f7451993e4f10e23273f6e2009-06-01T00:00:00Zhttp://drvnaindustrija.sumfak.hr/pdf//Drv%20Ind%20Vol%2060%202%20Kljak.pdfhttps://doaj.org/toc/0012-6772This paper investigates the influence of plywood grain direction on bending properties of a sandwich panel, as well as on stress distribution in each layer. Experimental sandwich panels (tnom= 29 mm) were made of two three-ply plywood panels and a rigid PVC core between them. Grain directions of plywood panels were between 0° and 90°, continuously raised by 15°. Seven models of sandwich panels were made. Bending properties of a sandwich panel was determined by three point bending method and stress in each layer was determined by using finite element method. Simulation models were developed with equal load conditions as applied during empirical measurement of bending properties of the sandwich panel. The research results show that grain direction has a great influence on bending properties of the sandwich panel, as well as on stress values in each layer. Results also indicate the importance of analyzing stress in each layer of plywood for the purpose of avoiding stress concentration in respective layers and for optimizing structural construction of the sandwich panel. Such stress analyses are not covered by standardized empirical methods for determining bending properties of sandwich panels.Jaroslav KljakMladen BrezovićAlan AntonovićUniversity of Zagreb, Faculty of Forestry and Wood Technologyarticlesandwich panelveneer plywoodstressFEMstructural constructionForestrySD1-669.5ENDrvna Industrija, Vol 60, Iss 2, Pp 83-88 (2009)
institution	DOAJ
collection	DOAJ
language	EN
topic	sandwich panel veneer plywood stress FEM structural construction Forestry SD1-669.5
spellingShingle	sandwich panel veneer plywood stress FEM structural construction Forestry SD1-669.5 Jaroslav Kljak Mladen Brezović Alan Antonović Influence of plywood grain direction on sandwich panel bending properties
description	This paper investigates the influence of plywood grain direction on bending properties of a sandwich panel, as well as on stress distribution in each layer. Experimental sandwich panels (tnom= 29 mm) were made of two three-ply plywood panels and a rigid PVC core between them. Grain directions of plywood panels were between 0° and 90°, continuously raised by 15°. Seven models of sandwich panels were made. Bending properties of a sandwich panel was determined by three point bending method and stress in each layer was determined by using finite element method. Simulation models were developed with equal load conditions as applied during empirical measurement of bending properties of the sandwich panel. The research results show that grain direction has a great influence on bending properties of the sandwich panel, as well as on stress values in each layer. Results also indicate the importance of analyzing stress in each layer of plywood for the purpose of avoiding stress concentration in respective layers and for optimizing structural construction of the sandwich panel. Such stress analyses are not covered by standardized empirical methods for determining bending properties of sandwich panels.
format	article
author	Jaroslav Kljak Mladen Brezović Alan Antonović
author_facet	Jaroslav Kljak Mladen Brezović Alan Antonović
author_sort	Jaroslav Kljak
title	Influence of plywood grain direction on sandwich panel bending properties
title_short	Influence of plywood grain direction on sandwich panel bending properties
title_full	Influence of plywood grain direction on sandwich panel bending properties
title_fullStr	Influence of plywood grain direction on sandwich panel bending properties
title_full_unstemmed	Influence of plywood grain direction on sandwich panel bending properties
title_sort	influence of plywood grain direction on sandwich panel bending properties
publisher	University of Zagreb, Faculty of Forestry and Wood Technology
publishDate	2009
url	https://doaj.org/article/47424c39c8f7451993e4f10e23273f6e
work_keys_str_mv	AT jaroslavkljak influenceofplywoodgraindirectiononsandwichpanelbendingproperties AT mladenbrezovic influenceofplywoodgraindirectiononsandwichpanelbendingproperties AT alanantonovic influenceofplywoodgraindirectiononsandwichpanelbendingproperties
_version_	1718399867790819328

Influence of plywood grain direction on sandwich panel bending properties

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