Cohesive zone modelling of interface fracture near flaws in adhesive joints

Peter Feraren Hansen, Henrik Myhre Jensen

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A cohesive zone model is suggested for modelling of interface fracture near flaws in adhesive joints. A shear-loaded adhesive joint bonded with a planar circular bond region is modelled using both the cohesive zone model and a fracture mechanical model. Results from the models show good agreement of crack propagation on the location and shape of the crack front and on the initial joint strength. Subsequently, the cohesive zone model is used to model interface fracture through a planar adhesive layer containing a periodic array of elliptical flaws. The effects of flaw shape are investigated, as well as the significance of fracture process parameters. The results from simulations of fracture in a bond containing circular flaws show that localization of crack propagation in the vicinity of a flaw has significant effect on the joint strength and crack front shape. The localization effects are highly dependent on the fracture process zone width relative to the flaw dimensions. It is also seen that with increasing fracture process zone width, the strength variation with the flaw shape decreases, however, the strength is effected over a wider range of propagation, (C) 2004 Elsevier Ltd. All rights reserved.
Original languageEnglish
JournalEngineering Fracture Mechanics
Volume71
Issue number15
Pages (from-to)2125-2142
ISSN0013-7944
DOIs
Publication statusPublished - 2004

Cite this

Hansen, Peter Feraren ; Jensen, Henrik Myhre. / Cohesive zone modelling of interface fracture near flaws in adhesive joints. In: Engineering Fracture Mechanics. 2004 ; Vol. 71, No. 15. pp. 2125-2142.
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Cohesive zone modelling of interface fracture near flaws in adhesive joints. / Hansen, Peter Feraren; Jensen, Henrik Myhre.

In: Engineering Fracture Mechanics, Vol. 71, No. 15, 2004, p. 2125-2142.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Cohesive zone modelling of interface fracture near flaws in adhesive joints

AU - Hansen, Peter Feraren

AU - Jensen, Henrik Myhre

PY - 2004

Y1 - 2004

N2 - A cohesive zone model is suggested for modelling of interface fracture near flaws in adhesive joints. A shear-loaded adhesive joint bonded with a planar circular bond region is modelled using both the cohesive zone model and a fracture mechanical model. Results from the models show good agreement of crack propagation on the location and shape of the crack front and on the initial joint strength. Subsequently, the cohesive zone model is used to model interface fracture through a planar adhesive layer containing a periodic array of elliptical flaws. The effects of flaw shape are investigated, as well as the significance of fracture process parameters. The results from simulations of fracture in a bond containing circular flaws show that localization of crack propagation in the vicinity of a flaw has significant effect on the joint strength and crack front shape. The localization effects are highly dependent on the fracture process zone width relative to the flaw dimensions. It is also seen that with increasing fracture process zone width, the strength variation with the flaw shape decreases, however, the strength is effected over a wider range of propagation, (C) 2004 Elsevier Ltd. All rights reserved.

AB - A cohesive zone model is suggested for modelling of interface fracture near flaws in adhesive joints. A shear-loaded adhesive joint bonded with a planar circular bond region is modelled using both the cohesive zone model and a fracture mechanical model. Results from the models show good agreement of crack propagation on the location and shape of the crack front and on the initial joint strength. Subsequently, the cohesive zone model is used to model interface fracture through a planar adhesive layer containing a periodic array of elliptical flaws. The effects of flaw shape are investigated, as well as the significance of fracture process parameters. The results from simulations of fracture in a bond containing circular flaws show that localization of crack propagation in the vicinity of a flaw has significant effect on the joint strength and crack front shape. The localization effects are highly dependent on the fracture process zone width relative to the flaw dimensions. It is also seen that with increasing fracture process zone width, the strength variation with the flaw shape decreases, however, the strength is effected over a wider range of propagation, (C) 2004 Elsevier Ltd. All rights reserved.

U2 - 10.1016/j.engfracmech.2003.12.003

DO - 10.1016/j.engfracmech.2003.12.003

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JF - Engineering Fracture Mechanics

SN - 0013-7944

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