Blar i NTNU Open på forfatter "Hellan, Øyvind"

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    • Hydroelastic response of concrete shells during impact on calm water 

      Abrahamsen, Bjørn Christian; Grytten, Frode; Hellan, Øyvind; Søreide, Tore H.; Faltinsen, Odd Magnus (Peer reviewed; Journal article, 2023)
      Many ocean structures located offshore are supported by large vertical concrete columns. High and steep storm waves – in the process of breaking – may induce large local slamming loads on these columns. The present work ...

    • Hydroplastic response of a square plate due to impact on calm water 

      Abrahamsen, Bjørn Christian; Alsos, Hagbart Skage; Aune, Vegard; Fagerholt, Egil; Faltinsen, Odd Magnus; Hellan, Øyvind (Peer reviewed; Journal article, 2020)
      This paper investigates large, plastic deflections of a square plate due to impact on calm water. Most research in the area has examined linear elastic structural responses to such impact, but hydrodynamic responses during ...

    • Initial Design of a Double Curved Floating Bridge and Global Hydrodynamic Responses Under Environmental Conditions 

      Wan, Ling; Magee, Allan Ross; Hellan, Øyvind; Watn, Arnstein; Ang, Kok Keng; Wang, Chien Ming (Chapter, 2017)
      In this paper, a floating bridge concept is proposed. This bridge concept comprises a two oppositely curves in plan, which enables the cancellation of the axial forces at the bridge as one arch will be under compression ...

    • Large floating structure with free-floating, self-stabilizing tanks for hydrocarbon storage 

      Dai, Jian; Ang, Kok Keng; Jin, Jingzhe; Wang, Chien Ming; Hellan, Øyvind; Watn, Arnstein (Journal article; Peer reviewed, 2019)
      Hydrocarbon is a major source of energy for sustainable development. Storage of hydrocarbon products, however, requires a significant amount of land space to land-scarce countries like Singapore. This paper presents an ...

    • Modular Multi-purpose Floating Structures for Space Creation 

      Dai, Jian; Hellan, Øyvind; Watn, Arnstein; Kok Keng, Ang (Chapter, 2022)
      Modular multi-purpose floating structures (MMFS) are an innovative approach for space creation on the sea. The basic idea is to create “land on sea” by connecting a number of standardized modular units to form the desired ...