A5049719948- Structural Integrity and Reliability Analysis
- Offshore Engineering and Technologies
- Fluid Dynamics and Vibration Analysis
- Marine and Offshore Engineering Studies
- Wave and Wind Energy Systems
- Probabilistic and Robust Engineering Design
- Wind and Air Flow Studies
- Oil and Gas Production Techniques
- Fluid Dynamics Simulations and Interactions
- Geotechnical Engineering and Underground Structures
- Ocean Waves and Remote Sensing
- Concrete Corrosion and Durability
- Fatigue and fracture mechanics
- Mechanical stress and fatigue analysis
- Coastal and Marine Dynamics
- Vibration and Dynamic Analysis
- Tropical and Extratropical Cyclones Research
- Non-Destructive Testing Techniques
- Drilling and Well Engineering
- Spacecraft and Cryogenic Technologies
- Underwater Vehicles and Communication Systems
- Geological Studies and Exploration
- Ship Hydrodynamics and Maneuverability
- Geotechnical Engineering and Soil Mechanics
- Earthquake and Tsunami Effects
The University of Western Australia
2016-2022
Shell (Netherlands)
1995-2021
ARC Centre of Excellence for Core to Crust Fluid Systems
2018
Shell (United Kingdom)
1993-1994
University of Manchester
1980
Institute of Science and Technology
1980
The key issue addressed in this paper is the accuracy of structural reliability models for case fixed steel offshore structures under extreme storm loading. emphasis on engineering purpose use decision-making, and more specifically to achieve sufficient enable deriving design criteria platforms. These are used derive partial load factors conjunction with API LRFD a target level appropriate permanently manned installations. location-dependent. Further proposed new, not normally
Damping plays a significant role on the maximum amplitude of vessel's roll motion, in particular near resonant frequency. It is common practice to predict damping using linear radiation–diffraction code and add that linearized viscous component, which can be obtained through empirical, semi-empirical equations or free decay tests calm water. However, it evident nonlinear with velocity amplitude. Nonlinear liquid cargo motions inside tanks also contribute damping, when ignored impedes...
A key aspect in the design of a mooring system for floating production unit is estimation extreme line loads specified short-term sea state typical duration equal to 3 hours. Commonly used approaches today are based on time-domain simulations whereby each hour run number times (typically 10–30 times) represent randomness sea. maximum response recorded from simulation. Particular statistic maxima data (e.g. mean, most probable or percentile) load which lines designed. This paper studies and...
Floating liquefied natural gas (FLNG) is an offshore structure which enables liquefaction, storage, and offloading of gas. It a game changer in hydrocarbon development. Side-by-side promising way transferring (LNG) from FLNG to LNG carrier. The roll response carriers, plays critical role, has been observed be influenced by the liquid cargo motion inside tanks. Therefore, operational window for side-by-side may not estimated robustly using simplified method ignores considers only ballast...
This paper considers the dynamic stability of free-hanging water intake risers. Suspended from a barge, these risers convey great volume cooling water, which is needed for offshore liquefaction process natural gas. There contradiction between theoretical predictions and experiments cantilever pipes pumping up water. Reported small-scale did not show any instability, while theory predicts instability beyond critical fluid velocity. To investigate whether previous experimental setups allow to...
This paper reviews the structural integrity and reliability of fixed steel offshore structures with a focus on improved models incorporation these in design standards. Technical achievements four key areas are reviewed which, when combined, resulted step improvement calculation reliability. The first area is extreme environmental loading an platform; second joint occurrence waves, winds currents, i.e. accounting for fact that do not, general, peak at same time not act direction. third...
ABSTRACT The probability of failure due to extreme environmental overload is calculated for Tern, a manned self contained production drilling platform located in the northern North sea. This demonstrates its high reliability. Comparison with results obtained structures other areas designed same API-WSD code, shows that consistent levels structural safety are not ensured. In contrast, this can be achieved using API-LRFD together location specific load factors and joint-metocean design...
Abstract A simplified framework is presented in which an existing artificial neural network (ANN) based tool for critical stress range prediction used order to rapidly assess the fatigue life of a steel catenary riser (SCR). The approach considers first-order motions hosting floater (heave, pitch and roll motions) irregular sea-states within touchdown zone (TDZ) SCR. Stress transfer functions are generated that approximate SCR TDZ due vertical motion at hang-off point. response amplitude...
Studying stability of a vertically suspended, fully submerged pipe conveying water (free-hanging intake riser), researchers have found that if critical flow velocity is reached, these pipes may flutter. However, there are different predictions for the value this velocity. Researchers mentioned values changing from infinitely small fluid velocities up to which unachievable in practice. The nonlinear hydrodynamic damping caused by surrounding seems be crucial correct description riser...