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Comparison of two progressive damage models for studying the notched behavior of composite laminates under tension

Reiner, Johannes and Feser, Thomas and Schueler, Dominik and Waimer, Matthias and Vaziri, Reza (2018) Comparison of two progressive damage models for studying the notched behavior of composite laminates under tension. Composite Structures, 207, pp. 385-396. Elsevier. DOI: https://doi.org/10.1016/j.compstruct.2018.09.033 ISSN 0263-8223

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Official URL: https://www.sciencedirect.com/science/article/pii/S0263822318314351

Abstract

Two continuum damage models with different underlying assumptions are investigated to assess their predictive capabilities and limitations with respect to progressive intra-laminar damage in notched IM7/8552 CFRP composite laminates under tension. The recently modified continuum damage model, CODAM2, implemented in LS-DYNA is compared to a Ladevèze-based damage model, ABQ_DLR_UD, implemented as a user-material model (VUMAT) in Abaqus/Explicit. Fundamental similarities and differences between the two models are first investigated by various single element simulation case studies before assessing their predictive capabilities at the more global coupon level. Over-height Compact Tension (OCT) tests with dispersed and blocked lay-ups as well as a wide range of scaled Center-Notched Tension (CNT) specimens are used to evaluate characteristic damage-related quantities such as strength, post-peak behavior and fracture energies. Experimental data are also used to further validate the two different meso-scopic damage models. The results of this study clearly demonstrate the layups, geometries and loading conditions that are suitable for applying intra-laminar damage models with confidence to this class of CFRP material system. Conversely, the study shows limitations of the continuum damage modeling techniques and suggests strategies that can be used to address these drawbacks.

Item URL in elib:https://elib.dlr.de/123824/
Document Type:Article
Title:Comparison of two progressive damage models for studying the notched behavior of composite laminates under tension
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Reiner, JohannesThe University of British ColumbiaUNSPECIFIED
Feser, ThomasBT-SINUNSPECIFIED
Schueler, Dominikdominik.schueler (at) dlr.deUNSPECIFIED
Waimer, MatthiasBT-SINUNSPECIFIED
Vaziri, RezaThe University of British ColumbiaUNSPECIFIED
Date:20 September 2018
Journal or Publication Title:Composite Structures
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:207
DOI :https://doi.org/10.1016/j.compstruct.2018.09.033
Page Range:pp. 385-396
Publisher:Elsevier
ISSN:0263-8223
Status:Published
Keywords:Finite element analysis Continuum damage mechanics Progressive damage simulation Meso-scale modeling
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Structural Integrity
Deposited By: Feser, Thomas
Deposited On:29 Nov 2018 11:54
Last Modified:29 Nov 2018 11:54

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