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Isogeometric analysis of free vibration of framed structures: comparative problems

Isogeometric analysis of free vibration of framed structures: comparative problems PurposeThe purpose of this paper is to check the efficiency of isogeometric analysis (IGA) by comparing its results with classical finite element method (FEM), generalized finite element method (GFEM) and other enriched versions of FEM through numerical examples of free vibration problems.Design/methodology/approachSince its conception, IGA was widely applied in several problems. In this paper, IGA is applied for free vibration of elastic rods, beams and trusses. The results are compared with FEM, GFEM and the enriched methods, concerning frequency spectra and convergence rates.FindingsThe results show advantages of IGA over FEM and GFEM in the frequency error spectra, mostly in the higher frequencies.Originality/valueIsogeometric analysis shows a feasible tool in structural analysis, with emphasis for problems that requires a high amount of vibration modes. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Engineering Computations: International Journal for Computer-Aided Engineering and Software Emerald Publishing

Isogeometric analysis of free vibration of framed structures: comparative problems

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References (30)

Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0264-4401
DOI
10.1108/EC-08-2015-0227
Publisher site
See Article on Publisher Site

Abstract

PurposeThe purpose of this paper is to check the efficiency of isogeometric analysis (IGA) by comparing its results with classical finite element method (FEM), generalized finite element method (GFEM) and other enriched versions of FEM through numerical examples of free vibration problems.Design/methodology/approachSince its conception, IGA was widely applied in several problems. In this paper, IGA is applied for free vibration of elastic rods, beams and trusses. The results are compared with FEM, GFEM and the enriched methods, concerning frequency spectra and convergence rates.FindingsThe results show advantages of IGA over FEM and GFEM in the frequency error spectra, mostly in the higher frequencies.Originality/valueIsogeometric analysis shows a feasible tool in structural analysis, with emphasis for problems that requires a high amount of vibration modes.

Journal

Engineering Computations: International Journal for Computer-Aided Engineering and SoftwareEmerald Publishing

Published: Apr 18, 2017

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