Application of Reduced Stiffness of Complex Laminate in Finite Elements for Chair Analysis

This paper presents a numerical procedure for the analysis of complex laminate structures. The procedure is based on the application of reduced stiffness of complex laminate. Introduction of reduced stiffness of composite facilitates both linear and nonlinear numerical integration, i.e. the tangenti...

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Main Authors: Biserka Nestorović, Ivica Grbac, Predrag Nestorović, Jelena Milošević
Format: Article
Language:English
Published: University of Zagreb, Faculty of Forestry and Wood Technology 2016-01-01
Series:Drvna Industrija
Subjects:
Online Access:http://hrcak.srce.hr/file/221895
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author Biserka Nestorović
Ivica Grbac
Predrag Nestorović
Jelena Milošević
author_facet Biserka Nestorović
Ivica Grbac
Predrag Nestorović
Jelena Milošević
author_sort Biserka Nestorović
collection DOAJ
description This paper presents a numerical procedure for the analysis of complex laminate structures. The procedure is based on the application of reduced stiffness of complex laminate. Introduction of reduced stiffness of composite facilitates both linear and nonlinear numerical integration, i.e. the tangential stiffness matrix is translated in the classical plate theory problem. The formulated numerical procedure was implemented in the program system KOMIPS. Special subroutine REDKRUT that calculates reduced stiffness of the laminate was written, and its application in numerical verification of experiments conducted on chairs was presented in (Nestorovic, 2010). At the end of this work, for 3D stress and strain analysis of veneer composites, recommendations were given for experimental determination of all nine independent material constants Ex, Ey, Ez, vxy, vxz, Gxy, Gxz, Gyz, fi ve of which were determined in the previous paper of the author (Nestorović, 2010).
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spelling doaj.art-b1eb7c0480ff4e49b77c255639748b342022-12-21T21:36:14ZengUniversity of Zagreb, Faculty of Forestry and Wood TechnologyDrvna Industrija0012-67721847-11532016-01-0166433934610.5552/drind.2015.1445Application of Reduced Stiffness of Complex Laminate in Finite Elements for Chair AnalysisBiserka NestorovićIvica GrbacPredrag NestorovićJelena MiloševićThis paper presents a numerical procedure for the analysis of complex laminate structures. The procedure is based on the application of reduced stiffness of complex laminate. Introduction of reduced stiffness of composite facilitates both linear and nonlinear numerical integration, i.e. the tangential stiffness matrix is translated in the classical plate theory problem. The formulated numerical procedure was implemented in the program system KOMIPS. Special subroutine REDKRUT that calculates reduced stiffness of the laminate was written, and its application in numerical verification of experiments conducted on chairs was presented in (Nestorovic, 2010). At the end of this work, for 3D stress and strain analysis of veneer composites, recommendations were given for experimental determination of all nine independent material constants Ex, Ey, Ez, vxy, vxz, Gxy, Gxz, Gyz, fi ve of which were determined in the previous paper of the author (Nestorović, 2010).http://hrcak.srce.hr/file/221895reduced stiffnessfi nite elementscompositematerial constantsshellchair
spellingShingle Biserka Nestorović
Ivica Grbac
Predrag Nestorović
Jelena Milošević
Application of Reduced Stiffness of Complex Laminate in Finite Elements for Chair Analysis
Drvna Industrija
reduced stiffness
fi nite elements
composite
material constants
shell
chair
title Application of Reduced Stiffness of Complex Laminate in Finite Elements for Chair Analysis
title_full Application of Reduced Stiffness of Complex Laminate in Finite Elements for Chair Analysis
title_fullStr Application of Reduced Stiffness of Complex Laminate in Finite Elements for Chair Analysis
title_full_unstemmed Application of Reduced Stiffness of Complex Laminate in Finite Elements for Chair Analysis
title_short Application of Reduced Stiffness of Complex Laminate in Finite Elements for Chair Analysis
title_sort application of reduced stiffness of complex laminate in finite elements for chair analysis
topic reduced stiffness
fi nite elements
composite
material constants
shell
chair
url http://hrcak.srce.hr/file/221895
work_keys_str_mv AT biserkanestorovic applicationofreducedstiffnessofcomplexlaminateinfiniteelementsforchairanalysis
AT ivicagrbac applicationofreducedstiffnessofcomplexlaminateinfiniteelementsforchairanalysis
AT predragnestorovic applicationofreducedstiffnessofcomplexlaminateinfiniteelementsforchairanalysis
AT jelenamilosevic applicationofreducedstiffnessofcomplexlaminateinfiniteelementsforchairanalysis