File Download
 
Links for fulltext
(May Require Subscription)
 
Supplementary

Article: An enhanced global-local higher-order theory for the free edge effect in laminates
  • Basic View
  • Metadata View
  • XML View
TitleAn enhanced global-local higher-order theory for the free edge effect in laminates
 
AuthorsLo, SH2
Zhen, W1
Cheung, YK2
Wanji, C1
 
KeywordsFree Edge Effects
Global-Local Higher Order Model
Laminated Composite Plates
 
Issue Date2007
 
PublisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/compstruct
 
CitationComposite Structures, 2007, v. 81 n. 4, p. 499-510 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.compstruct.2006.09.013
 
AbstractAccording to the double-superposition hypothesis proposed by Li and Liu [Li XY, Liu D. Generalized laminate theories based on double superposition hypothesis. Int J Numer Methods Eng 1997;40:1197-212], an enhanced global-local higher-order theory (EGLHT-mn) is developed to analyze the edge-effect problems in laminates. The in-plane displacement field consists of mth-order (9 ≥ m ≥ 3) polynomial in global coordinate z along the thickness direction and order 3 power series in local coordinate ζ within each layer whereas the transverse deflection is represented by a nth-order (9 ≥ n ≥ 3) polynomial of global coordinate z. By imposing the free surface conditions and the geometric and the stress continuity conditions at interfaces, the number of variables of the higher-order theory is independent of the number of layers of the laminates. As an improvement to the global-local theory proposed by Li and Liu (1997), the present higher-order theory takes into account all the effects of shear and normal stresses. A three-node triangular element satisfying the requirement of C1 weak-continuity conditions between elements is also presented. Comparing to previous published results, it is found that the present higher-order theory is capable of treating free-edge problems in symmetric and unsymmetric laminates under extension, bending and thermal loading. Other characteristic of the present theory is that transverse shear stresses can be accurately computed directly from the constitutive equations without smoothing. However, to determine transverse normal stresses, the local equilibrium equation approach has to been adopted. © 2006 Elsevier Ltd. All rights reserved.
 
ISSN0263-8223
2013 Impact Factor: 3.120
2013 SCImago Journal Rankings: 2.160
 
DOIhttp://dx.doi.org/10.1016/j.compstruct.2006.09.013
 
ISI Accession Number IDWOS:000249256200004
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorLo, SH
 
dc.contributor.authorZhen, W
 
dc.contributor.authorCheung, YK
 
dc.contributor.authorWanji, C
 
dc.date.accessioned2012-06-26T06:04:31Z
 
dc.date.available2012-06-26T06:04:31Z
 
dc.date.issued2007
 
dc.description.abstractAccording to the double-superposition hypothesis proposed by Li and Liu [Li XY, Liu D. Generalized laminate theories based on double superposition hypothesis. Int J Numer Methods Eng 1997;40:1197-212], an enhanced global-local higher-order theory (EGLHT-mn) is developed to analyze the edge-effect problems in laminates. The in-plane displacement field consists of mth-order (9 ≥ m ≥ 3) polynomial in global coordinate z along the thickness direction and order 3 power series in local coordinate ζ within each layer whereas the transverse deflection is represented by a nth-order (9 ≥ n ≥ 3) polynomial of global coordinate z. By imposing the free surface conditions and the geometric and the stress continuity conditions at interfaces, the number of variables of the higher-order theory is independent of the number of layers of the laminates. As an improvement to the global-local theory proposed by Li and Liu (1997), the present higher-order theory takes into account all the effects of shear and normal stresses. A three-node triangular element satisfying the requirement of C1 weak-continuity conditions between elements is also presented. Comparing to previous published results, it is found that the present higher-order theory is capable of treating free-edge problems in symmetric and unsymmetric laminates under extension, bending and thermal loading. Other characteristic of the present theory is that transverse shear stresses can be accurately computed directly from the constitutive equations without smoothing. However, to determine transverse normal stresses, the local equilibrium equation approach has to been adopted. © 2006 Elsevier Ltd. All rights reserved.
 
dc.description.naturelink_to_subscribed_fulltext
 
dc.identifier.citationComposite Structures, 2007, v. 81 n. 4, p. 499-510 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.compstruct.2006.09.013
 
dc.identifier.doihttp://dx.doi.org/10.1016/j.compstruct.2006.09.013
 
dc.identifier.epage510
 
dc.identifier.hkuros152299
 
dc.identifier.isiWOS:000249256200004
 
dc.identifier.issn0263-8223
2013 Impact Factor: 3.120
2013 SCImago Journal Rankings: 2.160
 
dc.identifier.issue4
 
dc.identifier.scopuseid_2-s2.0-34250771175
 
dc.identifier.spage499
 
dc.identifier.urihttp://hdl.handle.net/10722/150415
 
dc.identifier.volume81
 
dc.languageeng
 
dc.publisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/compstruct
 
dc.publisher.placeUnited Kingdom
 
dc.relation.ispartofComposite Structures
 
dc.relation.referencesReferences in Scopus
 
dc.rightsComposite Structures. Copyright © Elsevier Ltd.
 
dc.subjectFree Edge Effects
 
dc.subjectGlobal-Local Higher Order Model
 
dc.subjectLaminated Composite Plates
 
dc.titleAn enhanced global-local higher-order theory for the free edge effect in laminates
 
dc.typeArticle
 
<?xml encoding="utf-8" version="1.0"?>
<item><contributor.author>Lo, SH</contributor.author>
<contributor.author>Zhen, W</contributor.author>
<contributor.author>Cheung, YK</contributor.author>
<contributor.author>Wanji, C</contributor.author>
<date.accessioned>2012-06-26T06:04:31Z</date.accessioned>
<date.available>2012-06-26T06:04:31Z</date.available>
<date.issued>2007</date.issued>
<identifier.citation>Composite Structures, 2007, v. 81 n. 4, p. 499-510</identifier.citation>
<identifier.issn>0263-8223</identifier.issn>
<identifier.uri>http://hdl.handle.net/10722/150415</identifier.uri>
<description.abstract>According to the double-superposition hypothesis proposed by Li and Liu [Li XY, Liu D. Generalized laminate theories based on double superposition hypothesis. Int J Numer Methods Eng 1997;40:1197-212], an enhanced global-local higher-order theory (EGLHT-mn) is developed to analyze the edge-effect problems in laminates. The in-plane displacement field consists of mth-order (9 &#8805; m &#8805; 3) polynomial in global coordinate z along the thickness direction and order 3 power series in local coordinate &#950; within each layer whereas the transverse deflection is represented by a nth-order (9 &#8805; n &#8805; 3) polynomial of global coordinate z. By imposing the free surface conditions and the geometric and the stress continuity conditions at interfaces, the number of variables of the higher-order theory is independent of the number of layers of the laminates. As an improvement to the global-local theory proposed by Li and Liu (1997), the present higher-order theory takes into account all the effects of shear and normal stresses. A three-node triangular element satisfying the requirement of C1 weak-continuity conditions between elements is also presented. Comparing to previous published results, it is found that the present higher-order theory is capable of treating free-edge problems in symmetric and unsymmetric laminates under extension, bending and thermal loading. Other characteristic of the present theory is that transverse shear stresses can be accurately computed directly from the constitutive equations without smoothing. However, to determine transverse normal stresses, the local equilibrium equation approach has to been adopted. &#169; 2006 Elsevier Ltd. All rights reserved.</description.abstract>
<language>eng</language>
<publisher>Elsevier Ltd. The Journal&apos;s web site is located at http://www.elsevier.com/locate/compstruct</publisher>
<relation.ispartof>Composite Structures</relation.ispartof>
<rights>Composite Structures. Copyright &#169; Elsevier Ltd.</rights>
<subject>Free Edge Effects</subject>
<subject>Global-Local Higher Order Model</subject>
<subject>Laminated Composite Plates</subject>
<title>An enhanced global-local higher-order theory for the free edge effect in laminates</title>
<type>Article</type>
<description.nature>link_to_subscribed_fulltext</description.nature>
<identifier.doi>10.1016/j.compstruct.2006.09.013</identifier.doi>
<identifier.scopus>eid_2-s2.0-34250771175</identifier.scopus>
<identifier.hkuros>152299</identifier.hkuros>
<relation.references>http://www.scopus.com/mlt/select.url?eid=2-s2.0-34250771175&amp;selection=ref&amp;src=s&amp;origin=recordpage</relation.references>
<identifier.volume>81</identifier.volume>
<identifier.issue>4</identifier.issue>
<identifier.spage>499</identifier.spage>
<identifier.epage>510</identifier.epage>
<identifier.isi>WOS:000249256200004</identifier.isi>
<publisher.place>United Kingdom</publisher.place>
</item>
Author Affiliations
  1. Dalian University of Technology
  2. The University of Hong Kong