An adaptive floating node based formulation for the analysis of multiple delaminations under quasi-static loading

Guillem Gall Trabal, Brian Lau Verndal Bak, Boyang Chen, Esben Lindgaard*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A novel and efficient numerical formulation for the modelling of multiple delaminations growth in laminated composite materials subjected to quasi-static loading is presented. The proposed formulation alleviates the high computational cost associated with models featuring cohesive elements by using a novel Adaptive Refinement Scheme and an Adaptive Floating Node Method Element to refine the model effectively during the analysis without modifying the global finite element connectivity. The formulation has been implemented in a MATLAB finite element code and validated with single and multiple delamination numerical models with varying mode mixities. The new formulation provides accurate results comparable to standard fully refined finite element models while drastically lowering the computational time of the analysis.
Original languageEnglish
Article number106846
JournalComposites Part A: Applied Science and Manufacturing
Volume156
ISSN1359-835X
DOIs
Publication statusPublished - 2022

Keywords

  • Laminated composite structures
  • Cohesive element
  • Floating node method
  • Adaptive refinement
  • Delamination

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