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Isogeometric analysis suitable trivariate NURBS representation of composite panels with a new offset algorithm

Nguyen, Vinh Phu ORCID:, Kerfriden, Pierre ORCID:, Bordas, Stephane Pierre Alain ORCID: and Rabczuk, Timon 2014. Isogeometric analysis suitable trivariate NURBS representation of composite panels with a new offset algorithm. Computer-Aided Design 55 , pp. 49-63. 10.1016/j.cad.2014.05.004

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Trivariate NURBS (non-uniform rational B-splines) representation of composite panels which is suitable for three-dimensional isogeometric analysis (IGA) is constructed with a new curve/surface offset algorithm. The proposed offset algorithm, which is required by IGA, is non-existent in the CAD literature. Using the presented approach, finite element analysis of composite panels can be performed with the only input being the geometry representation of the composite surface. 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. Different parts (patches) can be parametrized independently of each other and glued together, in the finite element solver, by a discontinuous Galerkin method. A stress analysis of curved composite panel with stiffeners is provided to demonstrate the proposed framework.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Advanced Research Computing @ Cardiff (ARCCA)
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TJ Mechanical engineering and machinery
Uncontrolled Keywords: Isogeometric analysis; NURBS; finite elements; CAD; composite panels; offset curves/surfaces.
Publisher: Elsevier
ISSN: 0010-4485
Date of Acceptance: 12 May 2014
Last Modified: 11 Mar 2023 02:14

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