TY - JOUR
T1 - Two- and three-dimensional isogeometric cohesive elements for composite delamination analysis
AU - Nguyen, Vinh Phu
AU - Kerfriden, Pierre
AU - Bordas, Stéphane P A
PY - 2014/4
Y1 - 2014/4
N2 - 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.
AB - 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.
KW - A. Laminates
KW - B. Delamination
KW - C. Finite element analysis
KW - Isogeometric analysis
UR - http://www.scopus.com/inward/record.url?scp=84892590958&partnerID=8YFLogxK
U2 - 10.1016/j.compositesb.2013.12.018
DO - 10.1016/j.compositesb.2013.12.018
M3 - Article
AN - SCOPUS:84892590958
SN - 1359-8368
VL - 60
SP - 193
EP - 212
JO - Composites Part B: Engineering
JF - Composites Part B: Engineering
ER -