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A micro-meso-model of intra-laminar fracture in fiber-reinforced composites based on a discontinuous Galerkin/cohesive zone method
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).ORCID iD: 0000-0002-7236-6365
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2013 (English)In: Engineering Fracture Mechanics, ISSN 0013-7944, E-ISSN 1873-7315, Vol. 104, 162-183 p.Article in journal (Refereed) Published
Abstract [en]

The recently developed hybrid discontinuous Galerkin/extrinsic cohesive law framework is extended to the study of intra-laminar fracture of composite materials. Toward this end, micro-volumes of different sizes are studied. The method captures the debonding process, which is herein proposed to be assimilated to a damaging process, before the strain softening onset, and the density of dissipated energy resulting from the damage (debonding) remains the same for the different studied cell sizes. Finally, during the strain softening phase a micro-crack initiates and propagates in agreement with experimental observations. We thus extract a resulting mesoscale cohesive law, which is independent on the cell sizes, using literature methods.

Place, publisher, year, edition, pages
2013. Vol. 104, 162-183 p.
Keyword [en]
Cohesive law, Composites, Debonding, Discontinuous Galerkin method, Fracture, Microscale, Cohesive laws, Discontinuous galerkin, Discontinuous Galerkin methods, Dissipated energy, Experimental observation, Fiber-reinforced composite, Fracture of composites, Micro-scales, Composite materials, Energy dissipation, Galerkin methods, Legislation, Strains
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:kth:diva-134486DOI: 10.1016/j.engfracmech.2013.03.018ISI: 000320073100010Scopus ID: 2-s2.0-84878160932OAI: oai:DiVA.org:kth-134486DiVA: diva2:667012
Note

QC 20131125

Available from: 2013-11-25 Created: 2013-11-25 Last updated: 2017-12-06Bibliographically approved

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Tjahjanto, Denny

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