• A comparative study of beam element formulations for nonlinear analysis: corotatinal vs. geometrically exact formulations 

      Mathisen, Kjell Magne; Bazilevs, Yuri; Haugen, Bjørn; Helgedagsrud, Tore Andreas; Kvamsdal, Trond; Okstad, Knut Morten; Raknes, Siv Bente (Chapter, 2017)
      In this work the geometrically exact three-dimensional beam theory has been used as basis for development of a family of isoparametric higher order large deformation curved beam elements. Geometrically exact three-dimensional ...
    • ALE-VMS methods for wind-resistant design of long-span bridges 

      Helgedagsrud, Tore Andreas; Bazilevs, Yuri; Mathisen, Kjell Magne; Øiseth, Ole (Peer reviewed; Journal article, 2019)
      For unsteady aerodynamics, the Arbitrary Lagrangian-Eulerian Variational Multi-Scale (ALE-VMS) formulation for incompressible flows has proven an accurate and powerful method. In this paper we present an overview of some ...
    • Computational and experimental investigation of free vibration and flutter of bridge decks 

      Helgedagsrud, Tore Andreas; Bazilevs, Yuri; Mathisen, Kjell Magne; Øiseth, Ole (Journal article; Peer reviewed, 2018)
      A modified rigid-object formulation is developed, and employed as part of the fluid–object interaction modeling framework from Akkerman et al. (J Appl Mech 79(1):010905, 2012. https://doi.org/10.1115/1.4005072) to simulate ...
    • Isogeometric divergence-conforming variational multiscale formulation of incompressible turbulent flows 

      van Opstal, Timo Matteo; Yan, Jinhui; Coley, Christopher; Evans, John Andrew; Kvamsdal, Trond; Bazilevs, Yuri (Journal article, 2016)
      A new residual-based variational multiscale (RBVMS) formulation for incompressible turbulent flows is proposed that is suitable for discretization using divergence-conforming B-splines. The proposed methodology results in ...
    • Isogeometric Modeling and Experimental Investigation of Moving-Domain Bridge Aerodynamics 

      Helgedagsrud, Tore Andreas; Akkerman, Ido; Bazilevs, Yuri; Mathisen, Kjell Magne; Øiseth, Ole (Journal article; Peer reviewed, 2019)
      Computational fluid dynamics (CFD) and fluid–structure interaction (FSI) are growing disciplines in the aeroelastic analysis and design of long-span bridges, which, with their bluff body characteristics, offer major ...
    • Modeling and Simulation of Bridge-Section Buffeting Response in Turbulent Flow 

      Helgedagsrud, Tore Andreas; Bazilevs, Yuri; Mathisen, Kjell Magne; Yan, Jinhui; Øiseth, Ole (Peer reviewed; Journal article, 2019)
      Buffeting analysis plays an important role in the wind-resistant design of long-span bridges. While computational methods have been widely used in the study of self-excited forces on bridge sections, there is very little ...
    • Using ALE-VMS to compute aerodynamic derivatives of bridge sections 

      Helgedagsrud, Tore Andreas; Bazilevs, Yuri; Korobenko, Artem; Mathisen, Kjell Magne; Øiseth, Ole (Journal article; Peer reviewed, 2018)
      Aeroelastic analysis is a major task in the design of long-span bridges, and recent developments in computer power and technology have made Computational Fluid Dynamics (CFD) an important supplement to wind tunnel experiments. ...
    • Using ALE-VMS to compute wind forces on moving bridge decks 

      Helgedagsrud, Tore Andreas; Bazilevs, Yuri; Korobenko, Artem; Mathisen, Kjell Magne; Øiseth, Ole (Chapter, 2017)
      A framework for simulating the forced-vibration wind tunnel experiment using stabilized ALE-VMS techniques has been developed. With a user-defined motion of the bridge deck the problem reduces to a flow computation on a ...
    • A variational multiscale framework for atmospheric turbulent flows over complex environmental terrains 

      Ravensbergen, M.; Helgedagsrud, Tore Andreas; Bazilevs, Yuri; Korobenko, Artem (Peer reviewed; Journal article, 2020)
      A residual-based variational multi-scale (VMS) modeling framework is applied to simulate atmospheric flow over complex environmental terrains. The VMS framework is verified and validated using two test cases using linear ...
    • Wind forces on bridge decks using state-of-the-art FSI methods 

      Helgedagsrud, Tore Andreas (Doctoral theses at NTNU;2019:180, Doctoral thesis, 2019)
      Several bridges with span widths that challenge present technology are currently under planning in Norway, and wind effects are among the major concerns. Traditionally, wind-structure interactions are studied experimentally ...