Reference : Two- and three-dimensional isogeometric cohesive elements for composite delamination ...
Scientific journals : Article
Engineering, computing & technology : Aerospace & aeronautics engineering
Computational Sciences
Two- and three-dimensional isogeometric cohesive elements for composite delamination analysis
Nguyen, Vinh-Phu [> >]
Kerfriden, Pierre [School of Engineering, Institute of Mechanics and Advanced Materials, Cardiff University, The Parade, Cardiff CF24 3AA, United Kingdom]
Bordas, Stéphane mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit]
Composites. Part B, Engineering
Yes (verified by ORBilu)
[en] A. Laminates ; B. Delamination ; C. Finite element analysis ; Isogeometric analysis
[en] We propose an automatic numerical method requiring minimal user intervention to simulate delamination in composite structures. We develop isogeometric cohesive elements for two- and three-dimensional delamination by exploiting the knot insertion algorithm directly from CAD data to generate cohesive elements along delamination. A complete computational framework is presented including pre-processing, processing and post-processing. They are explained in detail 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. The method proposed 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. © 2013 Elsevier Ltd. All rights reserved.
EP/G042705/1, EPSRC, Engineering and Physical Sciences Research Council; 279578, European Research Council
Researchers ; Professionals ; Students ; Others
FP7 ; 289361 - INSIST - Integrating Numerical Simulation and Geometric Design Technology

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