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An elastic–plastic interface constitutive model: application to adhesive joints

Authors
Journal
International Journal of Plasticity
0749-6419
Publisher
Elsevier
Publication Date
Volume
20
Issue
12
Identifiers
DOI: 10.1016/j.ijplas.2003.12.008
Keywords
  • Adhesion
  • Plasticity
  • Mechanical Testing
  • Numerical Modelling
Disciplines
  • Computer Science
  • Mathematics

Abstract

Abstract An interface constitutive model which accounts for both reversible elastic, as well as irreversible inelastic separation-sliding deformations at the interface prior to failure has been developed and implemented in a finite-element computer program. A set of experiments has been conducted to determine the constitutive parameters in the interface model for adhesively-bonded components made from an aluminum alloy and a ductile polymeric adhesive. The constitutive model and the computational capability are shown to reasonably well predict the macroscopic deformed geometries and the load–displacement curves in: (a) T-peel experiments; (b) four-point bend experiments on bonded bi-layer edge-notch specimens; (c) lap-shear experiments.

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