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Erschienen in: Computational Mechanics 2/2014

01.08.2014 | Original Paper

NURBS- and T-spline-based isogeometric cohesive zone modeling of interface debonding

verfasst von: R. Dimitri, L. De Lorenzis, P. Wriggers, G. Zavarise

Erschienen in: Computational Mechanics | Ausgabe 2/2014

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Abstract

Cohesive zone (CZ) models have long been used by the scientific community to analyze the progressive damage of materials and interfaces. In these models, non-linear relationships between tractions and relative displacements are assumed, which dictate both the work of separation per unit fracture surface and the peak stress that has to be reached for the crack formation. This contribution deals with isogeometric CZ modeling of interface debonding. The interface is discretized with generalized contact elements which account for both contact and cohesive debonding within a unified framework. The formulation is suitable for non-matching discretizations of the interacting surfaces in presence of large deformations and large relative displacements. The isogeometric discretizations are based on non uniform rational B-splines as well as analysis-suitable T-splines enabling local refinement. Conventional Lagrange polynomial discretizations are also used for comparison purposes. Some numerical examples demonstrate that the proposed formulation based on isogeometric analysis is a computationally accurate and efficient technology to solve challenging interface debonding problems in 2D and 3D.

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Metadaten
Titel
NURBS- and T-spline-based isogeometric cohesive zone modeling of interface debonding
verfasst von
R. Dimitri
L. De Lorenzis
P. Wriggers
G. Zavarise
Publikationsdatum
01.08.2014
Verlag
Springer Berlin Heidelberg
Erschienen in
Computational Mechanics / Ausgabe 2/2014
Print ISSN: 0178-7675
Elektronische ISSN: 1432-0924
DOI
https://doi.org/10.1007/s00466-014-0991-7

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