Details
| Original language | English |
|---|---|
| Pages (from-to) | 369-388 |
| Number of pages | 20 |
| Journal | Computational mechanics |
| Volume | 54 |
| Issue number | 2 |
| Publication status | Published - 20 Feb 2014 |
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.
Keywords
- Cohesive zone modeling, Contact, Debonding, Isogeometric analysis, NURBS, T-splines
ASJC Scopus subject areas
- Engineering(all)
- Ocean Engineering
- Engineering(all)
- Mechanical Engineering
- Computer Science(all)
- Computational Theory and Mathematics
- Mathematics(all)
- Computational Mathematics
- Mathematics(all)
- Applied Mathematics
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In: Computational mechanics, Vol. 54, No. 2, 20.02.2014, p. 369-388.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - NURBS- and T-spline-based isogeometric cohesive zone modeling of interface debonding
AU - Dimitri, R.
AU - De Lorenzis, L.
AU - Wriggers, P.
AU - Zavarise, G.
N1 - Funding information: The authors at the Università del Salento and at the Technische Universität Braunschweig have received funding for this research from the European Research Council under the European Union’s Seventh Framework Programme (FP7/2007-2013), ERC Starting Researcher Grant “INTERFACES”, Grant Agreement No. 279439.
PY - 2014/2/20
Y1 - 2014/2/20
N2 - 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.
AB - 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.
KW - Cohesive zone modeling
KW - Contact
KW - Debonding
KW - Isogeometric analysis
KW - NURBS
KW - T-splines
UR - http://www.scopus.com/inward/record.url?scp=84905584020&partnerID=8YFLogxK
U2 - 10.1007/s00466-014-0991-7
DO - 10.1007/s00466-014-0991-7
M3 - Article
AN - SCOPUS:84905584020
VL - 54
SP - 369
EP - 388
JO - Computational mechanics
JF - Computational mechanics
SN - 0178-7675
IS - 2
ER -