Analytical and finite element modelling of circular glare plates under indentation loading and unloading

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dc.contributor.author Tsamasphyros, GJ en
dc.contributor.author Bikakis, GS en
dc.date.accessioned 2014-03-01T02:01:45Z
dc.date.available 2014-03-01T02:01:45Z
dc.date.issued 2011 en
dc.identifier.issn 09636935 en
dc.identifier.uri http://hdl.handle.net/123456789/29241
dc.relation.uri http://www.scopus.com/inward/record.url?eid=2-s2.0-80053406678&partnerID=40&md5=d186777cadc91c857cb24b98c53356a6 en
dc.subject Circular plate en
dc.subject Dent en
dc.subject FEM en
dc.subject Fibre-metal laminate en
dc.subject GLARE en
dc.subject Indentation en
dc.subject Unloading en
dc.subject.other Algebraic equations en
dc.subject.other Analytical expressions en
dc.subject.other Analytical formulas en
dc.subject.other Analytical results en
dc.subject.other ANSYS software en
dc.subject.other Circular plates en
dc.subject.other Dent en
dc.subject.other FEM calculation en
dc.subject.other Fibre Metal Laminates en
dc.subject.other Finite element modelling en
dc.subject.other Load-indentation curves en
dc.subject.other Loading and unloading en
dc.subject.other Static indentation en
dc.subject.other Unloading paths en
dc.subject.other Finite element method en
dc.subject.other Indentation en
dc.subject.other Loading en
dc.subject.other Paper laminates en
dc.subject.other Plate metal en
dc.subject.other Sandwich structures en
dc.subject.other Unloading en
dc.subject.other Glare en
dc.title Analytical and finite element modelling of circular glare plates under indentation loading and unloading en
heal.type journalArticle en
heal.publicationDate 2011 en
heal.abstract In this paper, analytical expressions are derived and a finite element modelling procedure is proposed in order to predict the static load-indentation curves of circular GLARE fibre-metal laminates during loading and unloading by a hemispherical indentor. Analytical formulas have been recently published for the static indentation of circular GLARE plates which are now used during the loading stage. Here, considering that aluminum layers are in a state of membrane yield and employing energy balance during unloading, the unloading path is determined. Using this unloading path, an algebraic equation is derived and solved for calculating the permanent dent depth of the GLARE plate after the indentor's withdrawal. ANSYS software is used and a non-linear analysis is employed with geometric and material non-linearities for FEM calculations. The derived formulas and the proposed finite element modelling procedure are applied to GLARE 2-2/1-0.3 and to GLARE 3-3/2-0.4 circular plates. The analytical results are compared with corresponding FEM results and a good agreement is found. The analytically calculated permanent dent depth is within 6 % for the GLARE 2 plate, and within 7 % for the GLARE 3 plate, of the corresponding numerically calculated result. No other solution of this problem is known to the authors. en
heal.journalName Advanced Composites Letters en
dc.identifier.volume 20 en
dc.identifier.issue 4 en
dc.identifier.spage 97 en
dc.identifier.epage 104 en

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