Bakgrunn og aktiviteter

Avoiding severe wind induced vibrations is one of the major concerns when designing long span bridges. Several bridges that will extend present bridge technology are currently under planning in Norway. These bridges will require new insight into modelling of wind forces on bridge decks to ensure an economic and reliable design. The true multiphysics behavior of such a problem can only be captured by utilizing a computational tool that combines the Computational Fluid Dynamics (CFD) and the Fluid-Structure Interaction (FSI) in a single-pass simulation.

The main objective of my work is to utilize the combination of wind-tunnel experimental testing and state of the art FSI methods to create new and improved load models that may be used to optimize the cross-sections for flutter instabilities of long span suspension bridges. This is achieved through a close collaboration between School of Engineering, Brown University, where Professor Yuri Bazilevs is well recognized for his contributions to isogemetric formulation of CFD/FSI problems, and the Structural Dynamics Group at NTNU with extensive knowledge on design of long span bridges.

Vitenskapelig, faglig og kunstnerisk arbeid

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Del av bok/rapport

  • Helgedagsrud, Tore Andreas; Bazilevs, Yuri; Korobenko, Artem; Mathisen, Kjell Magne; Øiseth, Ole. (2017) Using ALE-VMS to compute wind forces on moving bridge decks. MekIT’17 - Ninth national conference on Computational Mechanics.
  • Mathisen, Kjell Magne; Bazilevs, Yuri; Haugen, Bjørn; Helgedagsrud, Tore Andreas; Kvamsdal, Trond; Okstad, Knut Morten; Raknes, Siv Bente. (2017) A comparative study of beam element formulations for nonlinear analysis: corotatinal vs. geometrically exact formulations. MekIT’17 - Ninth national conference on Computational Mechanics.
  • Helgedagsrud, Tore Andreas; Raknes, Siv Bente; Mathisen, Kjell Magne. (2015) On Locking-free Methods for Isogeometric Large Deformation Analysis of Geometrically Exact Three-dimensional Beams. Proceedings of MekIT'15 Eighth National Conference on Computational Mechanics.