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Rate dependent compressive failure and delamination growth in multidirectional composite laminates
RISE Research Institutes of Sweden, Materials and Production, Polymeric Materials and Composites. Chalmers University of Technology, Sweden.ORCID iD: 0000-0003-3656-4900
Chalmers University of Technology, Sweden.
RISE Research Institutes of Sweden, Materials and Production, Polymeric Materials and Composites. Chalmers University of Technology, Sweden.ORCID iD: 0000-0002-2627-3280
RISE Research Institutes of Sweden, Materials and Production, Polymeric Materials and Composites.ORCID iD: 0000-0003-3755-6419
2023 (English)In: Journal of composite materials, ISSN 0021-9983, E-ISSN 1530-793XArticle, review/survey (Refereed) Epub ahead of print
Abstract [en]

A novel intralaminar model has, for the first time, been applied and validated for the rate-dependent failure of multidirectional carbon/epoxy laminates. Quasi-static compressive failure is evaluated by the growth of intralaminar rate-dependent damage combined with the interaction of cohesive zones for interlaminar delamination. A special feature of the intralaminar model is the homogenised ply response, allowing simultaneous damage-degradation of the polymer matrix combined with the fibres. To model the observed quasi-brittle failure response of the plies under finite deformation, we have used a viscoelastic-viscoplastic matrix combined with damage and isotropic hardening behaviour. Elastic transverse isotropy is used to model the fibre reinforcement of the plies. Standard cohesive surfaces are used to model the initiation and propagation of delamination. Numerical simulations using ABAQUS/Explicit are performed to predict the growth and delamination of intralaminar damage under compression in different laminates with 56 plies of IM7/8552 carbon/epoxy. Predictions of stress versus strain and damage growth are shown to agree well with experimental results for a range of strain rates and stacking sequences. 

Place, publisher, year, edition, pages
SAGE Publications Ltd , 2023.
Keywords [en]
Brittle fracture; Carbon; Ductile fracture; Hardening; Laminated composites; Strain rate; Viscoplasticity; Angle ply laminate; Cohesive surface; Composite laminate; Compressive failure; Continuum damage; Delamination growth; Dependent failure; Isotropic hardenings; Rate dependent; Viscoelasticity-viscoplasticity; Viscoelasticity
National Category
Composite Science and Engineering
Identifiers
URN: urn:nbn:se:ri:diva-68794DOI: 10.1177/00219983231215688Scopus ID: 2-s2.0-85178417981OAI: oai:DiVA.org:ri-68794DiVA, id: diva2:1825696
Funder
Swedish Foundation for Strategic Research, FID16-0041
Note

The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was supported by the Swedish Foundation for Strategic Research (SSF) through the contract dnr FID16-0041 and by the internal SK-development funds of RISE.

Available from: 2024-01-10 Created: 2024-01-10 Last updated: 2024-01-15Bibliographically approved

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Singh, VivekendraOlsson, RobinMarklund, Erik

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