Reference : Isogeometric cohesive elements for two and three dimensional composite delamination a...
Scientific journals : Article
Engineering, computing & technology : Aerospace & aeronautics engineering
Computational Sciences
http://hdl.handle.net/10993/14468
Isogeometric cohesive elements for two and three dimensional composite delamination analysis
English
Nguyen, VP []
Kerfriden, Pierre []
Bordas, Stéphane mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
2013
Composites : Part B, Engineering
Elsevier Science
Accepted with minor revision
Yes (verified by ORBilu)
International
1359-8368
[en] isogeometric analysis (IGA), B-spline, NURBS, finite elements (FEM), CAD, delamination, composite, cohesive elements, interface elements
[en] Isogeometric cohesive elements are presented for modeling two and three dimensional delaminated composite structures. We exploit the knot insertion algorithm offered by NURBS (Non Uniform Rational B-splines) to generate cohesive ele- ments along delamination planes in an automatic fashion. A complete computational framework is presented including pre-processing, processing and post-processing. They are explained in details and implemented in MIGFEM–an open source Matlab Isogemetric Analysis code developed by the authors. The composite laminates are modeled using both NURBS solid and rotation-free shell elements. Several two and three dimensional examples ranging from standard delamination tests (the mixed mode bending test) to the L-shaped specimen with a fillet, three dimensional (3D) double cantilever beam and a 3D singly curved thick-walled laminate are provided. To the authors’ knowledge, it is the first time that NURBS-based isogeometric analysis for two/three dimensional delamination modeling is presented. IGA provides a bi-directional system in which one can go forward from CAD to analysis and backwards from analysis to CAD. This is believed to facilitate the design of composite structures.
Researchers ; Professionals ; Students ; General public ; Others
http://hdl.handle.net/10993/14468
FP7 ; 289361 - INSIST - Integrating Numerical Simulation and Geometric Design Technology

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