Influence of geometrical parameters on the strength of Hybrid CFRP-aluminium tubular adhesive joints

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Abstract

Tubular adhesive joints, used in truss structures to join pultruded carbon fibre-reinforced polymer members to aluminium nodes, are modelled with varying dimensions. The numerical model uses a Cohesive Zone Modelling formulation with a trapezoidal traction-separation law for the adhesive layer, and experimental tests are carried to validate it. The results showed that the joint strength increases significantly with the bonding area, with a limit on the overlap length above which it stops increasing. This upper limit is affected by the thickness and tapering angle of the adherends, due to their influence on the shear stress distribution along the overlap. On the other hand, the adhesive thickness has only a marginal influence on the joint strength.

Original languageEnglish
Article number112077
JournalComposite Structures
Volume240
DOIs
Publication statusPublished - 15 May 2020

Keywords

  • Adhesive joints
  • Cohesive zone modelling
  • Ductile adhesives
  • Hybrid joints
  • Mechanical testing
  • Tubular joints

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