Blar i Institutt for marin teknikk på utgivelsesdato
Viser treff 21-40 av 3389
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Modelling of flexible slender systems for real-time simulation and control applications
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:222, Doctoral thesis, 2007)The main contributions in the present thesis are the development of two mathematical models describing the motion and forces in slender mechanical systems like cables. The main advantage by the models proposed is the ... -
An Experimental Investigation of In-line and Combined In-line and Cross-flow Vortex Induced Vibrations
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:253, Doctoral thesis, 2007)This thesis presents results from an experimental investigation of hydrodynamic forces on a cylinder under prescribed harmonic motions in uniform flow. The purpose of the experiments has been to find hydrodynamic coefficients ... -
Modeling and Control of Top Tensioned Risers
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:183, Doctoral thesis, 2007)This doctoral thesis presents new research results on the control of top tensioned risers in deep waters. The main motivation for this work is the development of a riser control system which control the top tension of the ... -
Analysis of Ignition and Combustion in Otto Lean-Burn Engines with Prechambers
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:160, Doctoral thesis, 2008)Otto-engines in which the combustion chamber has richer fuel/air mix close to the ignition source and leaner charge further away from the ignition source are often called "stratified charge engines". Stratified charge can ... -
Efficient Prediction of Dynamic Response for Flexible and Multi- Body Marine Structures
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:262, Doctoral thesis, 2008) -
Stochastic Response Analysis of Mooring Systems with Emphasis on Frequency-domain Analysis of Fatigue due to Wide-band Response Processes
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:11, Doctoral thesis, 2008)Mooring systems are widely used in the offshore industry to limit the horizontal excursions of a floating structure from desired position in order for the structure to fulfill the required tasks. Safety of mooring systems ... -
Lifetime profit modelling of ageing systems utilising information about technical condition
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:6, Doctoral thesis, 2008)This dissertation focuses on a framework to support decision making in the management of ageing (oil and gas) facilities. Within the oil and gas sector on the Norwegian Continental Shelf the topic has become important as ... -
Ship Grounding: Analysis of Ductile Fracture, Bottom Damage and Hull Girder Response
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:250, Doctoral thesis, 2008)The present work is concerned with problems related to grounding of ships. This ranges from prediction of fracture to analysis of hull girder loads during grounding. The thesis is composed as a collection of articles and ... -
Structural reliability based position mooring
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:62, Doctoral thesis, 2008)This thesis considers control of moored marine structures, referred to as position mooring. Moored marine structures can take on a number of different forms, and two applications are considered in this work, namely ... -
Experimental Investigation of Sloshing Loading and Load Effects in Membrane LNG Tanks Subjected to Random Excitation
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:259, Doctoral thesis, 2008) -
Hydrodynamic Coeffcients for Vortex-Induced Vibrationsof Flexible Beams
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:329, Doctoral thesis, 2008) -
Maneuvering and Seakeeping of a Single Ship and of Two Ships in Interaction
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:55, Doctoral thesis, 2008)The main objective of this thesis has been to study the maneuvering and seakeeping of two interacting ships. A systematic approach is adopted. First, the maneuvering behaviour of a single ship in regular waves was considered. ... -
A higher-order boundary element method and applications to marine hydrodynamics
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:170, Doctoral thesis, 2008) -
Fatigue Assessment of Aluminium Welded Box-stiffener Joints in Ships
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:88, Doctoral thesis, 2008)One of the trends in ship building is the building of larger and faster ships. However, increasing demand for speed has forced the ship designers to search for alternative materials to reduce the weight of the ship without ... -
An age-based replacement model for repairable systems with attention to high-speed marine diesel engines
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:243, Doctoral thesis, 2008)The background of this thesis is the high number of severe failures of high-speed propulsion engines in high-speed vessels. When number of failures is high, the preventive maintenance comes into particular focus. Hence, ... -
Propulsion control and thrust allocation on marine vessels
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:203, Doctoral thesis, 2008) -
Technical Condition Indexes and Remaining Useful Life of Aggregated Systems
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:278, Doctoral thesis, 2008) It is a challenge to determine the remaining useful life of items having several failure modes that are dependent on age and several condition monitoring sources. Remaining useful life has always been a wanted quantity ... -
Methods for Dynamic Response Analysis and Fatigue Life Estimation of Floating Fish Cages
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:149, Doctoral thesis, 2008) -
A Study of recrystallization during annealing of ECAP Commercial PureTitanium
(Master thesis, 2009)