... by performing well-controlled experiments, where we use an inverted, hollow cone as an impactor. The cone is kept immersed throughout in a water bath, such that it encloses an air bubble of known and controlled volume. A high-sensitivity sensor measures pressures at the vertex of the cone. Using high-speed...

... to interactions. marine transportation ice load damage model ice resistance force cold region science test data friction coefficient upstream oil & gas cone angle ice rubble interaction modeling & simulation cone simulation result numerical model ocean engineering Proceedings...

... in the experiment (a). Ice cone used in the simulations in comparison with the pyramid used in the experiment (b). Figure 4. Dimensionless vertical accelerations versus the time recorded in two tests of the first type. In the tests of the third type, the truncated ice pyramid was dropped into the hole in the ice...

... arrangement with armour block, locking cones and press plate, cannot be used for a CF armour as such solution will crush the fiber rods. A development program to qualify a CF armour has been initiated. The work is in line with previous development work by Clasen (2016) with CF armour, and is managed according...

... Modeling of Non-simultaneous Ice Crushing Loads on Large Sloped Cone of Wind Turbine Towers Li Zhou1, Shifeng Ding1, Wei Shi2, Feng Diao3, Pu Gong4, Qingfeng Wang1 1 School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang, China 2 Deepwater...

... climate change dynamic response wind energy fa direction ice condition msl ice-structure interaction renewable energy cone load case frequency numerical method wind turbine monopile social responsibility ice thickness ice edge thickness Investigation on Ice Loads for Offshore Wind...

... ABSTRACT Laboratory experiments have been carried out in a piston-driven wave flume to investigate the solitary wave impact on three types of vertical cylindrical objects, including the vertical cylinder, cone and bell-shaped lighthouse structure. First, the quality of the generated waves...

... floatover technology inner leg floatover installation cone mating subsea system slc jack upstream oil & gas elevation strand jack insert leg outer leg lifting tower design elevation installation floatover barge topsides A Low-Deck Floatover Installation Technology with Strand Jack...

... ABSTRACT In the paper, the hydrodynamic problem of a cone entering the water through the free fall motion has been analyzed based on three dimensional (3D) velocity potential theory. The fluid is assumed to be inviscid and incompressible, the flow to be irroatational and the gravity effect has...

... at Tianjin University. The model of the jacket platform consisted of four legs with upward-downward ice-breaking cones and a 4×5 conductor array, and the ice pile-up process was achieved by towing the model jacket through the ice sheet under different speeds, directions and water levels. During the tests...

... Abstract This paper presents a new conical structure to against ice impact. Different with previous indenters, there are several subsidiary conical entities on parent conical structure, between up and downward cone boundary. The structure considered in this paper and ice are modeled using...

... Abstract The ice-induced structural vibration is basically controlled by the value and period of dynamic ice force. For the conical structure, the value of ice force on the upward cone is larger than downward cone and the ice force period is much more complex. Field measurements in the Bohai...

... the two structures. The vertical clearance is 1.35m between the bottom of stabbing cones and the top of LMUs when referenced to the mean sea level. This larger vertical clearance is used to accommodate the significant vertical movement of the stabbing cones and the uncertainty of the bathymetric survey...

... keel offshore wind turbine cone lake erie thickness platform design Significance of Ice Impact on Structural Integrity of a Monopile Offshore Wind Turbine in The Great Lakes Mahdi Norouzi, Eric Wells, Sorin Cioc, Efstratios Nikolaidis and Abdollah Afjeh MIME Department, The University of Toledo...

... heel angle of 15 degrees for the design ice loads to avoid compressive failure of the ice at the buoy (a 45 degree slope of the cone was assumed). - An assumption of a first-year level ice local pressure of 1.5 MPa was applied for structural design for hull areas in contact with intact level ice...

..., in the present paper experiments were carried out for the hydrodynamic loads acting on rigid bodies striking a horizontal liquid surface at constant vertical speed. The study has been carried out by using a high speed hydraulic shock machine. Three different shapes of the rigid bodies, namely cones, square...

... used to model all structural elements of the support caisson, and the concrete inside the pile and cone. Shell elements were used to model the steel casing of the pile and cone. In the numerical studies of seismic loading, it is necessary to consider the hydrodynamic impact of sea water, which...

... behavior of the floatover barge, the movement of stabbing cones, as well as guide the design of LMUs, DSUs, and fender system, etc. This paper takes the 8,700Te integrated topsides of BZ34-1 CPP Platform as an example and presents the nonlinear time-domain mating analysis and its application to a typical...

... axial compression, two nominally identical cones collapsed at Fcoll ≈ 230 kN. Further two models were subjected to lateral pressure, and one shell to hydrostatic pressure. The magnitudes of their bifurcation pressure were, pbif ≈ 4.7 MPa. Experimental results compare very well with numerical estimates...

... are used: a cone and a wedge. The impact surface is a flat plate of ice or steel. Tests are performed at an impact speed of 100 mm/s with ice as the indenter and then repeated with steel as the indenter. Force-penetration history and pressure-area curves are determined from the data and the results...