Simulations of delamination propagation in composite laminates under static and low-velocity impact transverse loads using a new cohesive model

Ning Hu, Yutaka Zemba, Hisao Fukunaga

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, we have proposed a new cohesive model to stably and accurately simulate delamination propagations in composite laminates under transverse loads. In this model, we set up a pre-softening zone in front of the original softening zone. In this pre-softening zone, the initial stiffness is gradually reduced as the interface strength decreases. However, the onset displacement for starting the real softening process is not changed in this model. The fracture toughness of materials for determining the final displacement of complete decohesion is not changed too. This cohesive model is implemented in the explicit time integration scheme. A DCB problem is employed to analyze the characteristics of the present cohesive model. Moreover, an experimental example of laminates under impact loads is employed to illustrate the validity of the present method.

Original languageEnglish
Title of host publicationFrontiers in Materials Science and Technology, FMST 2008
PublisherTrans Tech Publications
Pages137-140
Number of pages4
ISBN (Print)0878494758, 9780878494750
DOIs
Publication statusPublished - 2008 Jan 1
EventInternational Conference on Frontiers in Materials Science and Technology, FMST 2008 - Brisbane, QLD, Australia
Duration: 2008 Mar 262008 Mar 28

Publication series

NameAdvanced Materials Research
Volume32
ISSN (Print)1022-6680

Other

OtherInternational Conference on Frontiers in Materials Science and Technology, FMST 2008
CountryAustralia
CityBrisbane, QLD
Period08/3/2608/3/28

Keywords

  • Cohesive model
  • Composite laminates
  • Delamination
  • Numerical analysis
  • Transverse loads

ASJC Scopus subject areas

  • Engineering(all)

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