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Two- and three-dimensional isogeometric cohesive elements for composite delamination analysis

Nguyen, Vinh Phu ORCID:, Kerfriden, Pierre ORCID: and Bordas, Stephane Pierre Alain ORCID: 2014. Two- and three-dimensional isogeometric cohesive elements for composite delamination analysis. Composites Part B: Engineering 60 , pp. 193-212. 10.1016/j.compositesb.2013.12.018

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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.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Advanced Research Computing @ Cardiff (ARCCA)
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Uncontrolled Keywords: A. Laminates; B. Delamination; C. Finite element analysis; Isogeometric analysis
Publisher: Elsevier
ISSN: 1359-8368
Funders: EU FP7, EPSRC, European Research Council (ERC)
Last Modified: 11 Mar 2023 02:14

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