Modeling fatigue-driving delamination using a thick level set interface model

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Abstract

This paper presents a new discontinuous damage model for simulating fatigue-driven delamination in composites. Fatigue models commonly describe crack growth using the Paris law which provides the link between the energy released due to delamination and the crack growth rate. A core issue in implementing the Paris law is to accurately compute the energy release rate. In common cohesive fatigue models the energy release rate is extracted locally from the cohesive law where improving the accuracy of computed energy release rate needs extra treatments. The new fatigue model proposed in this paper provides an accurate non-local method for extracting the energy release rate based on the thick level set approach. This model also profits from the kinematic capabilities of interface elements for modeling discontinuities along the interface. The model is validated by comparing the model predictions under di
erent fracture modes with theoretical and experimental data which shows good agreement in all cases.
Original languageEnglish
Title of host publicationProceedings of the 17th European Conference on Composite Materials
Subtitle of host publicationMunich, Germany
EditorsK. Drechsler
PublisherKIT
Pages1-5
Number of pages5
ISBN (Electronic)978-3-00-053387-7
Publication statusPublished - 2016
Event17th European Conference on Composite Materials, ECCM 2016 - Munich, Germany
Duration: 26 Jun 201630 Jun 2016
Conference number: 17
http://www.eccm17.org/

Conference

Conference17th European Conference on Composite Materials, ECCM 2016
Abbreviated titleECCM 2016
CountryGermany
CityMunich
Period26/06/1630/06/16
Internet address

Keywords

  • Delamination
  • composite
  • Fatigue
  • Thick level set
  • Interface elements

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