Dynamics of Strongly Curved Concrete Beams by Isogeometric Finite Elements

  • Flavio StochinoEmail author
  • Antonio Cazzani
  • Gian Felice Giaccu
  • Emilio Turco
Conference paper
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 10)


The standard finite elements approach for the dynamics of curved beam is usually based on the same energy functional used for straight beam, in other words an energy form that is essentially derived from de Saint–Venant’s theory. In case of strongly curved elements this approximation yields to not negligible errors, in particular for stress assessments. For this reason, in this work a different formulation, based on the Winkler’s simple kinematic assumptions, is adopted. In this way a non diagonal constitutive matrix is obtained and the computational efficiency of NURBS (Non Uniform Rational B–Splines) shape functions is added to an accurate representation of the constitutive relations. In this paper the natural frequencies and mode shapes of plane curved concrete beams are obtained. Computational cost and results accuracy is assessed with respect to closed form solutions and literature results.


Strongly curved beams Isogeometric analysis Beam dynamics 



The financial support of MIUR, the Italian Ministry of Education, University and Research, under grant PRIN 2010–2011 (project 2010MBJK5B—Dynamic, Stability and Control of Flexible Structures) is gratefully acknowledged.


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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Flavio Stochino
    • 1
    Email author
  • Antonio Cazzani
    • 1
  • Gian Felice Giaccu
    • 2
  • Emilio Turco
    • 2
  1. 1.Department of Civil, Environmental Engineering and ArchitectureUniversity of CagliariCagliariItaly
  2. 2.Department of Architecture, Design and Urban PlanningUniversity of SassariAlghero, SassariItaly

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