• A large scale simulation of floe-ice fractures and validation against full-scale scenario 

      Lu, Wenjun; Heyn, Hans-Martin; Lubbad, Raed; Løset, Sveinung (Journal article; Peer reviewed, 2018)
      While interacting with a sloping structure, an ice floe may fracture in different patterns. For example, it can be local bending failure or global splitting failure depending on the contact properties, geometry and confinement ...
    • A method for real-time estimation of full-scale global ice loads on floating structures 

      Kjerstad, Øivind Kåre; Lu, Wenjun; Skjetne, Roger; Løset, Sveinung (Journal article; Peer reviewed, 2018)
      This paper proposes an algorithm that uses conventional measurements found on-board ships coupled with additional Inertial Measurement Units to estimate the motions and global loads acting on them. The work is motivated ...
    • An overview of the Oden Arctic Technology Research Cruise 2015 (OATRC2015) and numerical simulations performed with SAMS driven by data collected during the cruise 

      Lubbad, Raed; Løset, Sveinung; Lu, Wenjun; Tsarau, Andrei; van den Berg, Marnix (Journal article; Peer reviewed, 2018)
      In the autumn of 2015, the Norwegian University of Science and Technology (NTNU) and the Swedish Polar Research Secretariat (SPRS) performed a research cruise named the “Oden Arctic Technology Research Cruise 2015” ...
    • Floe Ice – Sloping Structure Interactions 

      Lu, Wenjun (Doctoral thesis at NTNU;2014:324, Doctoral thesis, 2014)
      Several interaction processes can be identified during floe ice - sloping structure interactions. However, fierce processes around the waterline are the most conspicuous phenomena. These violent processes feature ice ...
    • Glacial Ice and Offshore Structure Impacts under Wave and Current Excitation 

      Lu, Wenjun; Amdahl, Jørgen (Journal article; Peer reviewed, 2019)
      Bergy bits and growlers (i.e., glacial ice features with a waterline diameter < 15 m) travelling with waves can pose great threats to offshore structure and ships operating in the high North. It is generally more difficult ...
    • Ice and conical structure interactions 

      Lu, Wenjun (Master thesis, 2010)
      The pursuit of energy in Arctic waters drives people to design ocean structures applying new concepts.Conical structures which shift the ice failure mode from crushing to bending could reduce the total iceload. Moreover, ...
    • Medium-scale consolidation of artificial ice ridge – Part II: Fracture properties investigation by a splitting test 

      Lu, Wenjun; Shestov, Aleksey; Løset, Sveinung; Salganik, Evgenii; Høyland, Knut Vilhelm (Journal article; Peer reviewed, 2019)
      Sea ice’s fracture properties are in general difficult to measure and there is still on-going debate on the proper way to conduct valid measurements. Among many controversy fracture test conditions, the size of the test ...
    • 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 ...
    • 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 ...
    • 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 ...