A Computational Method for Modeling Interface Corner Crack under Steady-State Delamination

Badrinath Veluri; Henrik Myhre Jensen

doi:10.4028/www.scientific.net/AMR.486.457

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 486A Computational Method for Modeling Interface...

A Computational Method for Modeling Interface Corner Crack under Steady-State Delamination

Abstract:

Corner cracks under steady-state delamination were investigated. The fracture mechanics parameters that include the strain energy release rate and the three-dimensional mode-mixity along the interface crack front are estimated. A numerical approach was then applied for coupling the far field solutions based on the Finite Element Method to the near field (crack tip) solutions based on the J-integral methodology. A quantitative approach was formulated based on the finite element method with iterative adjustment of the crack front nodal coordinates to estimate the critical delamination stresses as a function of the fracture criterion and corner angles.

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Periodical:

Advanced Materials Research (Volume 486)

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457-463

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.486.457

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Online since:

March 2012

Authors:

Badrinath Veluri, Henrik Myhre Jensen

Keywords:

Coating, Corner Cracks, Delamination, Interface Fracture, Mode Mixity, Thin Layers

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