Determination of mixed-mode cohesive zone failure parameters using digital volume correlation and the inverse finite element method

J. Y.S. Li-Mayer, M. Martinez, J. Lambros, M. N. Charalambides

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

Abstract

The suitability of an optimisation workflow for the determination of the mixed-mode cohesive zone model parameters using digital volume correlation (DVC) data and the inverse finite element method was examined. A virtual compression experiment of a cylinder with a spherical inclusion was modelled using the finite element method. A bilinear traction separation law with a linear mixed-mode relationship was used to describe the interfacial behaviour. Known mode I and mode II fracture energies, = 20 J/m2 and = 40 J/m2 and damage initiation stress, = = 0.09 MPa, were used to generate a target composite debonding behaviour. An objective function, , determined based on the debonding behaviour measurable by DVC was chosen. A full factorial experiment was carried out for the four cohesive parameters and showed that correlation between fracture energies/ damage initiation stresses and is non-linear and discontinuous with multiple local minima. Optimisations initiated at the local minima identified from the full factorial experiment correctly determined the target cohesive fracture energies and damage initiation stresses.

Original languageEnglish (US)
Title of host publicationAdvances in Fracture and Damage Mechanics XVII
EditorsLuis Rodriguez-Tembleque, Jaime Dominguez, Ferri M.H. Aliabadi
PublisherTrans Tech Publications Ltd
Pages72-76
Number of pages5
ISBN (Print)9783035713503
DOIs
StatePublished - 2018
Event17th International Conference on Fracture and Damage Mechanics, FDM 2018 - Bangkok, Thailand
Duration: Sep 4 2018Sep 6 2018

Publication series

NameKey Engineering Materials
Volume774 KEM
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Other

Other17th International Conference on Fracture and Damage Mechanics, FDM 2018
CountryThailand
CityBangkok
Period9/4/189/6/18

Keywords

  • Cohesive zone model
  • Composite
  • Mixed-mode
  • Optimisation

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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