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On the strength prediction of adhesively bonded FRP-steel joints using cohesive zone modelling
Chalmers University of Technology, Sweden.
Chalmers University of Technology, Sweden.
Chalmers University of Technology, Sweden.
RISE - Research Institutes of Sweden, Swerea, Swerea SICOMP.
2017 (English)In: Theoretical and applied fracture mechanics (Print), ISSN 0167-8442, E-ISSN 1872-7638Article in journal (Refereed) In press
Abstract [en]

The variety of failure modes that are likely to occur in fibre-reinforced polymer (FRP)/steel joints used in the construction industry adds to the complexity associated with the design of these joints. This variation in possible failure modes is mainly attributed to the lack of a controlled application environment and to rather insufficient quality assurance protocols and procedures. The use of energy-based methods such as, cohesive zone modelling (CZM), can be a solution to circumvent such complexities. This paper investigates a number of issues related to CZM analyses of FRP/steel adhesive joints using various test configurations and a comprehensive numerical study. Parameters such as the effect of shape and type of cohesive law, crack path location, length of damage process zone, variations of adhesive and FRP properties, and different failure modes including cohesive, interfacial debonding and FRP failure on the strength of joints are investigated. The results show that the behaviour of the tested joints is accurately predicted provided that the variation of failure modes are taken into account. Moreover, it is shown that the damage process zone in adhesive layer is directly proportional to the shape of cohesive laws. This feature can be employed in the design phase to ensure sufficient overlap length and to account for important in-service parameters such as temperature and moisture.

Place, publisher, year, edition, pages
2017.
Keyword [en]
Civil engineering structures, Cohesive zone modelling, Composites, Crack growth, Fibre reinforced materials, Interface fracture, Adhesive joints, Composite materials, Construction industry, Crack propagation, Cracks, Failure modes, Interfaces (materials), Quality assurance, Reinforcement, Steel fibers, Application environment, Energy-based methods, Fibre reinforced polymers, Interfacial debonding, Quality assurance protocols, Fiber reinforced materials
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-31185DOI: 10.1016/j.tafmec.2017.06.022Scopus ID: 2-s2.0-85021115011OAI: oai:DiVA.org:ri-31185DiVA: diva2:1135493
Available from: 2017-08-23 Created: 2017-08-23 Last updated: 2017-08-23Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
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  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
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  • Other locale
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Output format
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