Size effect of failure modes in composite laminates under compression

Bo Wang, Fei Xu, Yujie Wei

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The size effect of interfacial failure and buckling in composite laminates under uniaxial compression are investigated in this work. It is found that interfacial failure by excessive separation (normal mode) dominates for short composite laminates; as the length/thickness of a composite laminate increases, shear failure in the interface dominates, accompanied by buckling of the laminate. When the interface of a composite laminate fails, corresponding critical load to trigger buckling decreases. The size effect of failure modes in composite laminates is divided into six regions governed by the length to thickness ratio of composite laminates. The critical length to thickness ratios of each region are estimated using both theoretical analysis and finite element simulation. At the end, a failure mode map based on stress and length/thickness ratio relation is constructed.

Original languageEnglish
Title of host publication28th Congress of the International Council of the Aeronautical Sciences 2012, ICAS 2012
Pages1895-1901
Number of pages7
StatePublished - 2012
Event28th Congress of the International Council of the Aeronautical Sciences 2012, ICAS 2012 - Brisbane, Australia
Duration: 23 Sep 201228 Sep 2012

Publication series

Name28th Congress of the International Council of the Aeronautical Sciences 2012, ICAS 2012
Volume3

Conference

Conference28th Congress of the International Council of the Aeronautical Sciences 2012, ICAS 2012
Country/TerritoryAustralia
CityBrisbane
Period23/09/1228/09/12

Keywords

  • Buckling
  • Composite laminates
  • Critical length
  • Interfacial damage

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