A method for modelling arbitrarily shaped delamination fronts with large and distorted elements
Artikel i vetenskaplig tidskrift, 2024

The simulation of delamination in layered composites is currently limited for large structures. Typically, the use of Cohesive Zone Modelling leads to a requirement of keeping the elements smaller than 1.0 mm. As an alternative, this article presents an Energy Release Rate-based cohesive method enabling the use of elements significantly larger (up to 5 mm). A novel algorithm is presented to use the Virtual Crack Closure Technique with distorted elements not aligned with the delamination front. When the propagation criterion is met, a cohesive law is introduced to model the progressive crack growth along the newly created crack surface, ensuring to dissipate the correct amount of energy. The method is validated for different propagation tests. Notably, Double Cantilever Beam and End-Notched Flexure tests are accurately modelled with large and distorted elements. Finally, a partially reinforced DCB test demonstrates the ability of the method in representing an evolving delamination front.

Cohesive law

Efficient modelling

Energy release rate

Virtual crack closure technique



Pierre M. Daniel

Universitat de Girona

Btech Technical Center

Johannes Främby

DYNAmore Nordic AB

Martin Fagerström

Chalmers, Industri- och materialvetenskap, Material- och beräkningsmekanik

Pere Maimí

Universitat de Girona

Engineering Fracture Mechanics

0013-7944 (ISSN)

Vol. 306 110193

LIGHTer Academy Etapp 3

VINNOVA (2020-04526), 2024-02-05 -- 2025-12-31.


Teknisk mekanik


Kompositmaterial och -teknik



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