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Dynamic Analysis of a Monopile Offshore Wind Support Structure Subjected to Earthquakes - A Comparative Study Between the Responses of an Elastic and an Inelastic Soil-Structure Interaction Model Through Incremental Dynamic Analysis
(Master thesis, 2018)It was shown that the response of the structure is highly sensitive to the amplitude of the earthquake, following a nonlinear increase in response with increasing PGD. Even at the recorded moderate earthquake level, nonlinear ... -
Dynamic Analysis of a Subsea Module During Splash-zone Transit
(Master thesis, 2013)This thesis carries out a research on the dynamic performance of the template during the lowing operation through splash-zone. During the lifting operation, especially under harsh environment, the waves, winds as well as ... -
Dynamic Analysis of Connected Jackets
(Master thesis, 2018)The dynamic behavior of jacket platforms connected by a bridge has been studied by time-domain simulations in USFOS, which is a nonlinear finite element program. The main motivation behind studying this, is to be able to ... -
Dynamic Analysis of Floating Bridges with Transverse Pontoons
(Master thesis, 2014)The main objective of this thesis is to analyse the dynamic response of floatingbridges with transverse pontoons, when subjected to harmonic regular waveloads. As a result, a simplified beam model of the Bergsøysundet ... -
Dynamic analysis of floating bridges.
(Master thesis, 2023)Floating bridges, also known as pontoon bridges, are structures intended to connect two sides of land separated by a body of water and differentiated from standard bridges by the use of floating elements (generally pontoons) ... -
Dynamic Analysis of Floating Dock Structures
(Master thesis, 2015)This paper concerns a dynamic analysis preformed on a floating dock structure. The structure was installed by Bi-Brygga AS and failed in 2013 during a winter storm. Bi-Brygga AS offered this structure as a case study for ... -
Dynamic Analysis of Floating Wind Turbine subjected to Deterministic Wind Gusts
(Master thesis, 2019)This thesis focuses on the time domain response under extreme deterministic wind gusts, for which simulations are carried out in order to assess the turbine’s performance and build a database: softwares SIMA, FAST and ... -
Dynamic analysis of floating wind turbines during pitch actuator fault, grid loss, and shutdown
(Journal article; Peer reviewed, 2013)Coupled non-linear aero-hydro-servo-elastic simulations of three types of floating wind turbines (spar, semi- submersible, and tension leg platform) are carried out for several fault cases over a range of environmental ... -
Dynamic Analysis of ROV Operation
(Master thesis, 2015)At the semi-submersible rig Snorre B, the work class remotely operated vehicle (WROV) is essential to perform drilling and production activities. Currently, the weather criterion for launching the ROV is set to four meters ... -
Dynamic Analysis of Semi-submersible Offshore Fish Farm Operated in China East Sea
(Master thesis, 2019)In recent years, the aquaculture industry in China has achieved rapid development, which covers more than half of the world aquaculture production. For further development, Chinese aquaculture companies are looking for ... -
Dynamic Analysis of the Installation of Monopiles for Offshore Wind Turbines
(Doctoral thesis at NTNU;2016:139, Doctoral thesis, 2016)The installation of offshore wind farms presents great challenges as the industry move farther offshore and into deeper waters, and the turbines and foundations are getting larger and heavier. Current installation methods ... -
DYNAMIC ANALYSIS OF WORKOVER RISER UNDER UNEXPECTED CONDITIONS
(Master thesis, 2014)The oil and gas business will meet new economical and technical challenges in the future. Increasing water depths and a decreasing number of new findings lead to a demand for higher recovery rates. Workover systems are ... -
A Dynamic Approach to Evaluating the Effect of Slamming on a Jacket Foundation Template Lowered Through the Wave Zone
(Master thesis, 2015)The joint venture between Boskalis and VolkerWessels is responsible for installing 70 jacket foundations for the Wikinger offshore wind farm. The critical phase in this installation procedure is lowering a jacket foundation ... -
Dynamic Bayesian Networks for Reduced Uncertainty in Underwater Operations
(Peer reviewed; Journal article, 2022)This paper presents a novel framework for modelling dynamic Bayesian belief networks (BBNs) for online risk assessment in underwater operations. Existing frameworks spans from commercial software with restricted code access ... -
Dynamic behavior of subsea wellhead and shallow pipe under seismic action
(Peer reviewed; Journal article, 2022)The interaction between shallow pipe and soil near the subsea wellhead is an important factor in the maintenance of subsea wellhead stability. First, a seismic test was conducted. A shaking table and a shear model box were ... -
Dynamic Behaviour Comparison of a 10-MW Drivetrain in a Bottom-Fixed Monopile and a Spar Floating Wind Turbines
(Chapter, 2020)Up to now, very little attentions have been paid to multi-megawatt off shore wind turbine drivetrains. In order to improve the reliability of the offshore wind turbine drivetrain, a better understanding of its dynamic ... -
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 ... -
Dynamic behaviour of anchor handling vessels during anchor deployment
(Journal article; Peer reviewed, 2017)Anchor handling operation (AHO) is potentially hazardous, as for instance demonstrated by the Bourbon Dolphin accident in 2007. Although the accident has been studied by various parties, there has been limited focus on the ... -
Dynamic buckling of marine structures
(Master thesis, 2014)In this report the buckling resistance of marine structures when dynamic effects is important is investigated. A review of the governing theory is presented for both beam and plates. A sample of the different ways of solving ... -
Dynamic Collapse of the Hull Girder in a Container Ship in Waves
(Master thesis, 2016)The interest on the influence of dynamic effects on the hull girder loading has increased in the last years. Research shows a high influence of whipping and springing on the fatigue loading. The influence on the extreme ...