Numerical modelling of unstable mode i transverse intralaminar crack propagation using the size effect law

Luís F. Varandas, Denis Dalli, Giuseppe Catalanotti, Brian G. Falzon

Research output: Contribution to conferenceConference Paperpeer-review

Abstract

This paper presents a micromechanical Finite Element (FE) model to study mode I transverse intralaminar damage propagation in unidirectional (UD) composite materials. A computational framework consisting of Single Edge Notch Tension (SENT) virtual specimens, composed of Unit Cells (UCs) embedded in homogenised regions, is proposed. Random fibre distributions and appropriate constitutive models are used to model the different dissipative phenomena that occur at crack initiation and propagation. The corresponding crack-resistance curve (R-curve) is obtained by fitting the size effect law (SEL) to the peak loads obtained from geometrically scaled SENT FE models.

Original languageEnglish
Publication statusPublished - 2019
Event22nd International Conference on Composite Materials, ICCM 2019 - Melbourne, Australia
Duration: 11 Aug 201916 Aug 2019

Conference

Conference22nd International Conference on Composite Materials, ICCM 2019
CountryAustralia
CityMelbourne
Period11/08/1916/08/19

Bibliographical note

Funding Information:
The authors gratefully acknowledge the financial support of the project ICONIC – Improving the crashworthiness of composite transportation structures. ICONIC has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 721256. The content reflects only the authors’ view and the Agency is not responsible for any use that may be made of the information it contains.

Publisher Copyright:
© 2019 International Committee on Composite Materials. All rights reserved.

Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.

Keywords

  • Computational Mechanics
  • Intralaminar fracture toughness
  • Polymer Matrix Composites (PMCs)
  • Size effect law

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