Title : Isogeometric analysis suitable trivariate NURBS representation of composite panels with a new offset algorithm Language : English Author, co-author : Nguyen, Vinh-Phu [> >] Kerfriden, Pierre [School of Engineering, Institute of Mechanics and Advanced Materials, Cardiff University, The Parade, Cardiff CF24 3AA, United Kingdom] Bordas, Stéphane [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit] Rabczuk, Timon [Institute of Structural Mechanics, Bauhaus-Universität Weimar, Marienstraße 15, 99423 Weimar, Germany] Publication date : 2014 Journal title : Computer-Aided Design Publisher : Elsevier Ltd Volume : 55 Pages : 49-63 Peer reviewed : Yes (verified by ORBilu ) Audience : International ISSN : 0010-4485 Keywords : [en] CAD ; Composite panels ; Finite elements ; Isogeometric analysis ; NURBS ; Offset curves/surfaces ; Algorithms ; Computer aided design ; Finite element method ; Galerkin methods ; Stress analysis ; Discontinuous Galerkin methods ; Finite element solver ; Geometry representation ; Non-uniform rational B-splines ; Offset curve ; InterpolationAbstract : [en] 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. © 2014 Elsevier Ltd. All rights reserved.Funders : EP/G042705/1, EPSRC, European Research Council; ERC, European Research Council Target : Researchers ; Professionals ; Students ; Others Permalink : http://hdl.handle.net/10993/21439 DOI : 10.1016/j.cad.2014.05.004 Framework Programme / European Project : FP7 ; 289361 - INSIST - Integrating Numerical Simulation and Geometric Design Technology 
[University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit]
