Blar i Fakultet for ingeniørvitenskap (IV) på tidsskrift "Ships and Offshore Structures"
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A simplified analytical method for predictions of ship deckhouse collision loads on steel bridge girders
(Journal article; Peer reviewed, 2018)Bridges across busy navigation channels are under the threat of accidental ship collisions. Many research works have been conducted to investigate the structural responses during ship bow-bridge pier collisions. However, ... -
Coupling of dynamic reaction forces of a heavy load crane and ship motion responses in waves
(Peer reviewed; Journal article, 2021)The conventional approach to dynamic analysis of ship motion response with shipboard operation equipment is usually done by establishing combined equations of motion of the multi-body system. The weakness of such methods ... -
Discussion of assumptions behind the external dynamic models in ship collisions and groundings
(Journal article; Peer reviewed, 2019)In the past decades, a prevailing way for the assessment of responses in ship collisions and groundings has been to decouple the problem into two parts: external dynamics and internal mechanics. The external dynamics deals ... -
Dynamic behaviour of aluminium alloy plates with surface cracks subjected to repeated impacts
(Journal article, 2018)This paper investigates the behaviour of aluminium alloy plates with and without initial cracks under repeated impacts. Three series of impact tests were conducted to study the behaviour of circular plate that do not have ... -
Hydrodynamic development of a bionic pectoral fin for undersea monitoring platform
(Journal article; Peer reviewed, 2018)Bionic pectoral fins play an essential role in achieving the superior swimming ability of the bio-inspired undersea monitoring platform by producing desired movements and propulsion forces. This paper discusses the ... -
Influence of sigma-phase precipitation on the impact behaviour of duplex stainless steel pipe fittings
(Journal article; Peer reviewed, 2016)In this study, the effect of sigma-phase precipitation in duplex stainless steel (grade 2205) pipe fittings collected from top-side process systems offshore was investigated under realistic loading conditions. This was ... -
Laboratory experiments on shared-energy collisions between freshwater ice blocks and a floating steel structure
(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 investigations of the dynamic response of a floating bridge under environmental loadings
(Journal article; Peer reviewed, 2018)Floating bridges across wide and deep fjords are subjected to the environmental wind and wave loadings. In this study, the dynamic response of floating bridges under such loadings is investigated. A floating bridge concept, ... -
Parameter Identification of Ship Manoeuvring Model Under Disturbance Using Support Vector Machine Method
(Peer reviewed; Journal article, 2021).Demanding marine operations increase the complexity of manoeuvring. A highly accurate ship model promotes predicting ship motions and advancing control safety. It is crucial to identify the unknown hydrodynamic coefficients ... -
Quantitative risk modelling in the offshore petroleum industry: integration of human and organizational factors
(Journal article; Peer reviewed, 2019)In-depth investigations of major offshore accidents show that technical, human, operational and organisational risk influencing factors (RIFs) all have crucial effects on the accident sequences. Nonetheless, the current ... -
Sailing status recognition to enhance safety awareness and path routing for a commuter ferry
(Peer reviewed; Journal article, 2021)This paper suggests a framework about how log data are used to develop a classifier to recognise the sailing status of a commuter ferry, which, in turn, serves as a tool of safety awareness. Several sailing scenarios are ... -
Short-term extreme ice loads prediction and fatigue damage evaluation for an icebreaker
(Journal article; Peer reviewed, 2018)In this paper, the short-term extreme value statistics of the ice loads acting on ship hull and the fatigue damage due to ice loads actions are studied. Due to the stochastic nature of the ice-induced loads and randomness ... -
Thermal analysis of marine structural steel EH36 subject to non-spreading cryogenic spills. Part I: experimental study
(Peer reviewed; Journal article, 2021)Liquefied Natural Gas (LNG) spills may cause steel to embrittle, leading to the brittle fracture of marine structures due to the cryogenic temperatures. For the integrity assessment of marine steel structures in the event ... -
Thermal analysis of marine structural steel EH36 subject to non-spreading cryogenic spills. Part II: finite element analysis
(Peer reviewed; Journal article, 2021)In Part I of this paper, six liquid nitrogen (LN2) pool boiling tests were carried out to locally cool down six different EH36 steel plates to cryogenic temperatures. Leindenfrost and Critical Heat Flux (CHF) points of LN2 ... -
Thermal analysis of marine structural steel EH36 subject to non-spreading cryogenic spills: Part III: structural response assessment
(Peer reviewed; Journal article, 2022)An experimental study that allows for thermal-structural analysis of steel structures subject to non-spreading cryogenic spills is described. A local, non-spreading cryogenic spill was replicated by building a liquid ... -
Virtual Prototyping for Maritime Winch Design and Operations based on Functional Mock-up Interface Co-simulation
(Journal article; Peer reviewed, 2019)Modern winch systems have become increasingly complex with hybrid power systems, intelligent control systems, and lightweight synthetic cables with complicated traction and handling mechanisms. During the early design ... -
Virtual prototyping: a case study of positioning systems for drilling operations in the Barents Sea
(Journal article; Peer reviewed, 2019)This study proposes a framework for comparative study on three different positioning solutions for mobile offshore drilling units (MODUs) using high modulus polyethylene (HMPE) ropes, including active mooring with an HMPE ...