Browsing NTNU Open by Author "Kim, Ekaterina"
Now showing items 1-20 of 25
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A comparative analysis of the fluid-structure interaction method and the constant added mass method for ice-structure collisions
Song, Ming; Kim, Ekaterina; Amdahl, Jørgen; Ma, Jun; Huang, Yi (Journal article, 2016)The constant added mass (CAM) method and the fluid-structure interaction (FSI) method are widely used to simulate ship-ship and ship-ice collisions. In the CAM method, the hydrodynamic effect of the surrounding water is ... -
A phenomenological explanation of the pressure-area relationship for the indentation of ice: Two size effects in spherical indentation experiments
Kim, Ekaterina; Schulson, EM (Journal article, 2015)Indentation tests provide a simple means to study the inelastic behavior of ice and other materials when loaded under a compressive stress state. Such tests provide force–time plots which are often converted to pressure–area ... -
A Preliminary Analysis of the Crushing Specific Energy of Iceberg Ice under Rapid Compressive Loading
Kim, Ekaterina; Gagnon, R (Journal article, 2017)Indentation tests are used to study inelastic response of ice and other materials when loaded under a compressive stress state. Indentation testing provides force–time plots which are often converted to pressure–area curves, ... -
Analysis of accidental iceberg impacts with large passenger vessels
Wang, Suyu (Master thesis, 2017)The number of collisions between ships and ice are increasing with the increase of ships sailing in Arctic areas. It is necessary to research on large passenger ships subjected to iceberg impact, since it may cause huge ... -
Analysis of accidental iceberg impacts with large passenger vessels and FPSOs
Radhakrishnan, Gowtham (Master thesis, 2018)This Master thesis is part of the degree for the Nordic Masters in Maritime Engineering -
Applying CAST to investigation of the FPSO’s incident with an iceberg
Kim, Ekaterina; Utne, Ingrid Bouwer; Kim, Hyungju (Journal article; Peer reviewed, 2019)On 29 March 2017, the floating production storage and offloading unit (FPSO) did not disconnect and sail away when a medium iceberg came close to the FPSO. The tow of the iceberg was unsuccessful, and the crew was instructed ... -
Can a computer see what an ice expert sees? Multilabel ice objects classification with convolutional neural networks
Kim, Ekaterina; Dahiya, Gurvinder; Løset, Sveinung; Skjetne, Roger (Journal article; Peer reviewed, 2019)Computer-aided scene analysis has drawn much attention, especially in autonomous navigation and advanced navigation assistance systems for surface vessels. In ice-infested waters, multilabel ice object classification and ... -
Concept of the Specific Energy of the Mechanical Destruction of Ice versus the Ice Pressure-Area Relationship: Review and Discussion
Kim, Ekaterina; Tsuprik, Vladimir G. (Chapter, 2018)For a structure-ice interaction process, a continuous record of force versus time can be converted to an ice pressure–area curve, or it can be used to find the specific energy of the mechanical destruction of ice (crushing ... -
Discussion of assumptions behind rule-based ice loads due to crushing
Kim, Ekaterina; Amdahl, Jørgen (Journal article; Peer reviewed, 2016)Forecasts and trends indicate an increase in marine operations in polar waters. The design of new ships for severe polar conditions is usually solved via theoretical considerations that are combined with previous experience ... -
Experimental and numerical studies related to the coupled behavior ofice mass and steel structures during accidental collisions
Kim, Ekaterina (Doktoravhandlinger ved NTNU, 1503-8181; 2014:135, Doctoral thesis, 2014)More and more people are attracted to go North. To design a fixed or a floating structure for Arctic conditions, to set operational limits or to specify certain safety requirements, one must rely on limited knowledge, data ... -
Fluid-structure-interaction analysis of an ice block-structure collision
Song, Ming; Kim, Ekaterina; Amdahl, Jørgen (Journal article; Peer reviewed, 2015)Due to climate change, production and transportation routes in Arctic regions are becoming more prevalent. When operating in Arctic waters, there is a significant risk of high energy encounters with smaller ice masses such ... -
Freeze-Bond Strength: Analysis of Experiments and FE Modeling of a shear test on freeze-bonds
Kim, Ekaterina (Master thesis, 2009) -
Iceberg shape characterization for damage assessment of accidental impacts with ships and offshore structures
Myhre, Torstein (Master thesis, 2013)The northern areas are becoming more and more attractive because off the large oil and gas reservoir that is there. In this area there is a harsh environment and the possibility to collide with an iceberg increases as the ... -
Laboratory experiments on shared-energy collisions between freshwater ice blocks and a floating steel structure
Kim, Ekaterina; Storheim, Martin; Amdahl, Jørgen; Løset, Sveinung; von Bock und Polach, Rüdiger Ulrich Franz (Journal article; Peer reviewed, 2017)Ship collisions with floating ice in which the ship sustains damage are in the shared-energy regime – both the ice and the ship dissipate energy through inelastic deformations. The physics of these events are rarely studied. ... -
Numerical Investigation of Fluid-Ice-Structure Interaction During Collision by an Arbitrary Lagrangian Eulerian Method
Song, Ming; Kim, Ekaterina; Amdahl, Jørgen; Greco, Marilena; Souli, M'Hamed (Chapter; Peer reviewed, 2016)When ice floes collide against marine structures, pronounced hydrodynamic loads are induced by the water-ice-structure interaction. With today’s highly competitive structural design market, it is nearly impossible to ignore ... -
On a shifting pressure-area relationship for the accidental limit state analysis of abnormal ice actions
Kim, Ekaterina; Amdahl, Jørgen; Song, Ming (Chapter, 2017)The relationship between pressure and area is often used to describe various ice-structure interaction processes. With knowledge of the nominal contact area and the force, a continuous plot of average pressure versus ... -
On ice model validation and calibration strategies for damage as-sessment of structures subjected to impact actions
Kim, Ekaterina; Song, Ming; Amdahl, Jørgen (Chapter, 2016)The number of numerical ice models in structural design is growing, and classical Lagrangian finite element formulation is still dominant for numerical simulations. In design of ships and offshore structures, the numerical ... -
Optimisation of a New Energy System in Longyearbyen based on LNG and Solar Energy - Applying Mixed Integer Linear Programming and a Rolling Horizon Heuristic
Hovden, Petter (Master thesis, 2018)Longyearbyen is an isolated, Arctic settlement, where the energy situation is facing changes in near future. Today s energy system in Longyearbyen is a stand-alone system, consisting of a coal power plant as primary power ... -
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 ... -
Probabilistic material modeling of iceberg for analysis of accidental impacts with ships and offshore structures
Bøhlerengen, Simen (Master thesis, 2013)There has been an increasing interest of maritime and offshore operations in the arctic regions for some decades now. In arctic regions there are icebergs which can?t be neglected. The first part of this thesis is an ...