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Article

Mesoscale Model for Composite Laminates: Verification and Validation on Scaled Un-notched Laminates

by
Giuseppe Corrado
1,2,
Albertino Arteiro
1,*,
António Torres Marques
1,
Fernass Daoud
3 and
Florian Glock
2
1
DEMec, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal
2
Stress Methods and Optimisation, Airbus Defence and Space GmbH, 85077 Manching, Germany
3
Department of Aerospace and Geodesy, Technical University of Munich, 85521 Ottobrunn, Germany
*
Author to whom correspondence should be addressed.
Polymers 2024, 16(12), 1659; https://doi.org/10.3390/polym16121659
Submission received: 11 May 2024 / Revised: 2 June 2024 / Accepted: 3 June 2024 / Published: 11 June 2024

Abstract

This paper presents a mesoscale damage model for composite materials and its validation at the coupon level by predicting scaling effects in un-notched carbon-fiber reinforced polymer (CFRP) laminates. The proposed material model presents a revised longitudinal damage law that accounts for the effect of complex 3D stress states in the prediction of onset and broadening of longitudinal compressive failure mechanisms. To predict transverse failure mechanisms of unidirectional CFRPs, this model was then combined with a 3D frictional smeared crack model. The complete mesoscale damage model was implemented in ABAQUS®/Explicit. Intralaminar damage onset and propagation were predicted using solid elements, and in-situ properties were included using different material cards according to the position and effective thickness of the plies. Delamination was captured using cohesive elements. To validate the implemented damage model, the analysis of size effects in quasi-isotropic un-notched coupons under tensile and compressive loading was compared with the test data available in the literature. Two types of scaling were addressed: sublaminate-level scaling, obtained by the repetition of the sublaminate stacking sequence, and ply-level scaling, realized by changing the effective thickness of each ply block. Validation was successfully completed as the obtained results were in agreement with the experimental findings, having an acceptable deviation from the mean experimental values.
Keywords: composites; failure; size effect; CFRP; damage model; finite element analysis (FEA) composites; failure; size effect; CFRP; damage model; finite element analysis (FEA)

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MDPI and ACS Style

Corrado, G.; Arteiro, A.; Marques, A.T.; Daoud, F.; Glock, F. Mesoscale Model for Composite Laminates: Verification and Validation on Scaled Un-notched Laminates. Polymers 2024, 16, 1659. https://doi.org/10.3390/polym16121659

AMA Style

Corrado G, Arteiro A, Marques AT, Daoud F, Glock F. Mesoscale Model for Composite Laminates: Verification and Validation on Scaled Un-notched Laminates. Polymers. 2024; 16(12):1659. https://doi.org/10.3390/polym16121659

Chicago/Turabian Style

Corrado, Giuseppe, Albertino Arteiro, António Torres Marques, Fernass Daoud, and Florian Glock. 2024. "Mesoscale Model for Composite Laminates: Verification and Validation on Scaled Un-notched Laminates" Polymers 16, no. 12: 1659. https://doi.org/10.3390/polym16121659

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