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

Nguyen, Vinh Phu ORCID: https://orcid.org/0000-0003-1212-8311, Kerfriden, Pierre ORCID: https://orcid.org/0000-0002-7749-3996 and Bordas, Stephane Pierre Alain ORCID: https://orcid.org/0000-0001-8634-7002 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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Abstract

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:	Schools > Engineering Professional Services > 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
URI:	https://orca.cardiff.ac.uk/id/eprint/56418

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