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Free vibration analysis of curved Bernoulli-Euler beam using isogeometric approach

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Authors
Jočković, Miloš
Baitsch, Matthias
Nefovska-Danilović, Marija
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Abstract
Isogeometric analysis (IGA) is based on a concept that uses the same base functions for representing both the model geometry and the solution space. The most common base functions used in the IGA are NURBS (Non-Uniform Rational B-Splines) functions for their capability to analytically represent various geometries. In this paper, the IGA is applied in the free vibration analysis of rotation-free plane curved Bernoulli-Euler beam. The stiffness and mass matrices have been developed using basic concepts of continuum mechanics and the principle of virtual work. Geometry of the undeformed and deformed beam is defined using convective coordinates and cross section basis vectors. Results of the free vibration analysis for beam with arbitrary curvature are compared with the results obtained from the conventional finite element method (FEM) software. The significant advantages of the IGA approach over the FEM are shown and discussed.
Keywords:
isogeometric analysis / free vibration / rotation-free Bernoulli-Euler beam
Source:
Proceedings / The 6th International Congress of Serbian Society of Mechanics, Tara, June 19-21, 2017, 2017, 134-134
Publisher:
  • Serbian Society of Mechanics ; Faculty of Mechanical Engineering, University of Belgrade,Belgrade, Beograd
Projects:
  • Towards development of sustainable cities: influence of traffic induced vibrations on buildings and humans (RS-36046)

ISBN: 978-86-909973-6-7

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http://grafar.grf.bg.ac.rs/handle/123456789/1573
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  • Radovi istraživača / Researcher's publications
  • Катедра за техничку механику и теорију конструкција
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