Blar i NTNU Open på forfatter "Løset, Sveinung"

Viser treff 21-33 av 33

    • Observations and Numerical Simulation of Icebergs in Broken Ice 

      Yulmetov, Renat (Doctoral theses at NTNU;2017:24, Doctoral thesis, 2017)
      Sea ice and icebergs are the major challenges for offshore activities in the Arctic. Design loads for Arctic offshore structures may be significantly reduced if the drift of sea ice and icebergs is possible to forecast ...

    • Parallel channels' fracturing mechanism during ice management operations. Part I: Theory 

      Lu, Wenjun; Lubbad, Raed; Shestov, Aleksey; Løset, Sveinung (Journal article; Peer reviewed, 2018)
      It is frequently observed that long cracks in sea-ice tend to form between parallel channels during ice management operations. The long cracks that develop play an important role in reducing the size of the managed ice ...

    • Parallel channels' fracturing mechanism during ice management operations. Part II: Experiment 

      Lu, Wenjun; Lubbad, Raed; Løset, Sveinung (Journal article; Peer reviewed, 2018)
      During ice management operations, cutting parallel channels with narrow spacing in the ice using icebreakers can effectively reduce the size of ice floes reaching the protected vessel/structure. A narrow channel spacing ...

    • Pilot study of ice-structure interaction in a pendulum accelerator 

      Storheim, Martin; Nord, Torodd Skjerve; Kim, Ekaterina; Høyland, Knut Vilhelm; Langseth, Magnus; Amdahl, Jørgen; Løset, Sveinung (Journal article; Peer reviewed, 2015)
      More knowledge on the coupled response of ice and structure in collision in which both bodies undergo permanent damage is needed. These types of experiments are challenging to perform in a laboratory at relatively high ...

    • Quantifying Icebreaker Performance in Ice Management Operations by High-Fidelity Numerical Simulations 

      Bjørnø, Jon; van den Berg, Marnix; Lu, Wenjun; Skjetne, Roger; Lubbad, Raed; Løset, Sveinung (Chapter, 2020)
      In the study presented in this paper, the problem of quantifying the performance of icebreaker operations within ice management (IM) has been targeted, using the capabilities of high-fidelity simulations by a discrete ...

    • Simulator for Arctic Marine Structures (SAMS) 

      Lubbad, Raed; Løset, Sveinung; Lu, Wenjun; Tsarau, Andrei; van den Berg, Marnix (Chapter; Peer reviewed, 2018)
      As offshore activities in the Arctic constitute a relatively new field with only a handful of relevant operations to draw experience from, and since full-scale trials are extremely expensive, there is an expressed need for ...

    • Splitting as a Load Releasing Mechanism for a Floater in Ice 

      Lindseth, Sverre Haug (Master thesis, 2013)
      This master thesis divided into three parts: 1) A literature review on available literature concerning ice, fracture mechanics and theories for splitting of ice floes; 2) The development of a robust criterion for determination ...

    • The Arctic DP Research Project: Effective Stationkeeping in Ice 

      Skjetne, Roger; Imsland, Lars Struen; Løset, Sveinung (Journal article; Peer reviewed, 2014)
      Stress on the environment from a potentially growing energy use is set to rise. Without doubt the energy resources in Arctic regions will be developed. An important goal will be to exploit the resources offered by for ...

    • The Role of the Thermodynamic Consolidation of Ice Ridge Keels in the Seabed Gouging Process 

      Shestov, Aleksey (Doctoral Theses at NTNU, 1503-8181; 2013:253, Doctoral thesis, 2013)
      Many engineering challenges are currently posed by the Arctic and the sea ice found there. Ice ridge keels have attracted significant attention because of the potential damage they can inflict on subsea installations. The ...

    • Toward a holistic load model for structures in broken ice 

      Kim, Ekaterina; Lu, Wenjun; Lubbad, Raed; Løset, Sveinung; Amdahl, Jørgen (Journal article; Peer reviewed, 2015)
      Over the past decade we have seen an increase in marine operations in Arctic waters. Despite research and work on several offshore standards and ship rules, the ice loads on fixed and floating structures are not fully ...

    • Uncertainty quantification in the ice-induced local damage assessment of a hull section 

      Kim, Ekaterina; Yu, Zhaolong; Amdahl, Jørgen; Løset, Sveinung (Journal article; Peer reviewed, 2019)
      For the northernmost ocean regions, where the ice is occasionally present, one must design a robust structure that can withstand rare ice events (i.e., a glacial ice impact). Despite existing engineering practice is well ...

    • Understanding the effect of assumptions on shell plate thickness for arctic ships 

      Kim, Ekaterina; Amdahl, Jørgen; Storheim, Martin; Løset, Sveinung (Journal article; Peer reviewed, 2015)
      The presence of ice requires specially constructed ships. The biggest challenge in this aspect is ice loads on ship’s hull: processes of deformation and fracture of ice are not fully understood and ice geometry and mechanical ...

    • The Value of High-Fidelity Numerical Simulations of Ice-Ship and Ice-Structure Interaction in Arctic Design with Informed Decisionmaking 

      van den Berg, Marnix Albert; Bjørnø, Jon; Lu, Wenjun; Skjetne, Roger; Lubbad, Raed; Løset, Sveinung (Chapter, 2022)
      Long-term changes in the climate lead to an increase of activities in the Arctic. Ships and structures operating in Arctic waters may encounter sea ice and must be designed to withstand the loads resulting from ice-ship ...