Cohesive zone finite element analysis of crack initiation from a butt joint’s interface corner

Reedy, Jr., E. D.

doi:10.1016/j.ijsolstr.2014.08.020

Title: Cohesive zone finite element analysis of crack initiation from a butt joint’s interface corner

Abstract

The Cohesive zone (CZ) fracture analysis techniques are used to predict the initiation of crack growth from the interface corner of an adhesively bonded butt joint. In this plane strain analysis, a thin linear elastic adhesive layer is sandwiched between rigid adherends. There is no preexisting crack in the problem analyzed, and the focus is on how the shape of the traction–separation (T–U) relationship affects the predicted joint strength. Unlike the case of a preexisting interfacial crack, the calculated results clearly indicate that the predicted joint strength depends on the shape of the T–U relationship. Most of the calculations used a rectangular T–U relationship whose shape (aspect ratio) is defined by two parameters: the interfacial strength σ* and the work of separation/unit area Γ. The principal finding of this study is that for a specified adhesive layer thickness, there is any number of σ*, Γ combinations that generate the same predicted joint strength. For each combination there is a corresponding CZ length. We developed an approximate CZ-like elasticity solution to show how such combinations arise and their connection with the CZ length.

Authors:: Reedy, Jr., E. D.

Publication Date:: Mon Dec 01 00:00:00 EST 2014

Research Org.:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1389693

Alternate Identifier(s):: OSTI ID: 1140558

Report Number(s):: SAND-2014-1163J
Journal ID: ISSN 0020-7683; S0020768314003321; PII: S0020768314003321

Grant/Contract Number:: AC04-94AL85000

Resource Type:: Published Article

Journal Name:: International Journal of Solids and Structures

Additional Journal Information:: Journal Name: International Journal of Solids and Structures Journal Volume: 51 Journal Issue: 25-26; Journal ID: ISSN 0020-7683

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; cohesive zone; bonded joint; interface corner; interfacial fracture

Citation Formats


                    Reedy, Jr., E. D. Cohesive zone finite element analysis of crack initiation from a butt joint’s interface corner.  United States: N. p., 2014. 
Web.  doi:10.1016/j.ijsolstr.2014.08.020.

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                    Reedy, Jr., E. D. Cohesive zone finite element analysis of crack initiation from a butt joint’s interface corner.  United States.  https://doi.org/10.1016/j.ijsolstr.2014.08.020

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                    Reedy, Jr., E. D. Mon .  
"Cohesive zone finite element analysis of crack initiation from a butt joint’s interface corner".  United States.  https://doi.org/10.1016/j.ijsolstr.2014.08.020.

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@article{osti_1389693,

  title        = {Cohesive zone finite element analysis of crack initiation from a butt joint’s interface corner},

  author       = {Reedy, Jr., E. D.},

  abstractNote = {The Cohesive zone (CZ) fracture analysis techniques are used to predict the initiation of crack growth from the interface corner of an adhesively bonded butt joint. In this plane strain analysis, a thin linear elastic adhesive layer is sandwiched between rigid adherends. There is no preexisting crack in the problem analyzed, and the focus is on how the shape of the traction–separation (T–U) relationship affects the predicted joint strength. Unlike the case of a preexisting interfacial crack, the calculated results clearly indicate that the predicted joint strength depends on the shape of the T–U relationship. Most of the calculations used a rectangular T–U relationship whose shape (aspect ratio) is defined by two parameters: the interfacial strength σ* and the work of separation/unit area Γ. The principal finding of this study is that for a specified adhesive layer thickness, there is any number of σ*, Γ combinations that generate the same predicted joint strength. For each combination there is a corresponding CZ length. We developed an approximate CZ-like elasticity solution to show how such combinations arise and their connection with the CZ length.},

  doi          = {10.1016/j.ijsolstr.2014.08.020},

  journal      = {International Journal of Solids and Structures},

  number       = 25-26,

  volume       = 51,

  place        = {United States},

  year         = {Mon Dec 01 00:00:00 EST 2014},

  month        = {Mon Dec 01 00:00:00 EST 2014}

}

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Works referencing / citing this record:

Effects of joint geometry and material on stress distribution, strength and failure of bonded composite joints: an overview
journal, December 2018

Shishesaz, Mohammad; Hosseini, Mohammad
The Journal of Adhesion, Vol. 96, Issue 12
DOI: 10.1080/00218464.2018.1554483

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Title: Cohesive zone finite element analysis of crack initiation from a butt joint’s interface corner

Abstract

Citation Formats

Effects of joint geometry and material on stress distribution, strength and failure of bonded composite joints: an overview journal, December 2018

Effects of joint geometry and material on stress distribution, strength and failure of bonded composite joints: an overview
journal, December 2018