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Propagation of delamination in composite materials with isogeometric continuum shell elements
Author(s) -
Hosseini Saman,
Remmers Joris J.C.,
Verhoosel Clemens V.,
Borst René
Publication year - 2014
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.4730
Subject(s) - delamination (geology) , isogeometric analysis , composite number , discontinuity (linguistics) , materials science , traction (geology) , finite element method , structural engineering , shell (structure) , quadratic equation , interpolation (computer graphics) , composite material , geometry , mathematics , mathematical analysis , physics , engineering , geology , classical mechanics , mechanical engineering , paleontology , subduction , tectonics , motion (physics)
Summary A continuum shell element based on the isogeometric analysis concept is extended to model propagating delaminations that can occur in composite materials and structures. The interpolation in the thickness direction is carried out using a quadratic B‐spline, and delamination is modelled by a double‐knot insertion to reduce the inter‐layer continuity. Within the discontinuity, the traction is derived from the relative displacement between the layers by a cohesive relation. A range of examples, including delamination propagation in straight and curved planes and buckling‐delamination, illustrate the versatility and the potential of the approach. Copyright © 2014 John Wiley & Sons, Ltd.