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Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-119
... upstream oil & gas maximum liquefaction depth midstream oil & gas offshore pipeline pore pressure single pipeline jeng amplitude fluid dynamics pipeline seabed response tandem pipeline pore-water pressure variation reservoir characterization single pipe boundary condition loading...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-151
... usually concerns three subsystems: the top platform, the mooring system and riser system. They influence each other and respond to environmental loading in a complex way. The positioning mooring lines are likely to be broken when subject to harsh conditions in deeper water, which could result...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-318
... loading on the typical structures under the action of level ice. Firstly, in this paper, the processes reflecting the interactions of level ice versus the typical structures were analyzed generally. Then, a series model testing on the ice loading mechanism of the typical structures was performed...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-082
... undrained cyclic loading intervened with consolidation has been shown to lead to hardening, manifested by evolving strength, stiffness, and coefficient of consolidation. This paper presents results from a set of stress-controlled direct simple shear (DSS) tests. The tests follow pre-failure episodic cyclic...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-095
... ABSTRACT In this study, a numerical model is adopted to investigate the wave-seabed interactions around offshore wind turbine four–pile jacket foundation. Unlike the previous study, irregular wave loading will be considered. The present model is adopted from PORO–FSSI–FOAM solver, which...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-098
... and cost-effectiveness (Barari & Ibsen, 2012; Kourkoulis et al., 2014). They are generally subjected to combined vertical ( V ), horizontal ( H ) and moment ( M ) loading resulting from the harsh environmental conditions (Shen et al., 2017; Fu et al., 2017). The failure envelope approach has been...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-100
... ult and M ult of foundation in homogeneous clay seabed under pure horizontal load ( H ), vertical load ( V ) and moment load ( M ) are calculated. Furthermore, the loading performance of the foundation under combined load conditions was studied with fixed displacement ratio method. Considering...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-034
... on the fatigue problem of the monopile foundation OWT under coupled loading. In order to solve the above problems, this paper uses a method to construct effective strain data. In addition, this paper uses finite element method (FEM) to conduct fatigue analysis for the monopile foundation OWT model by using S-N...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-486
... ABSTRACT The aluminum honeycomb sandwich plates (AHSP) have been widely used in marine applications due to their excellent properties such as high strength/weight ratio. In the present study, the dynamic response of aluminum honeycomb sandwich plates under slamming loadings is investigated...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-469
... around the world. Even a small crack can lead to severe structural failure under fatigue loading. It is needed to develop a precise Fatigue Crack Propagation (FCP) analysis method for variable amplitude loading conditions to analyze the fatigue failure effectively and maintain structural integrity...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-573
... ABSTRACT The trailing suction hopper dredger(TSHD) completes the sediment loading by the hopper system. The loading efficiency of the hopper system is affected by the hopper geometry. The geometry of hopper should be optimized according to the loading and deposition process in hopper, so...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-4137
... Abstract The crack growth behavior of hull structure subjected to the biaxial non-proportional low-cycle fatigue loading with the different phase differences about the 45°, 90° and 180° respectively is studied in this study. Then, the biaxial non-proportional low-cycle fatigue crack...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3227
... of failure (LOF) approach, which may lead to undesirable high project cost. In this paper, a higher-level approach involving power spectrum density (PSD) of the random excitation loading coupled with finite element analysis is presented. This approach has been successfully applied to a recent Equinor...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1237
... reduced. Compared to conventional solutions, the proposed system offers the necessary support without resorting to massive and difficult to construct foundations. To demonstrate its efficacy, the system's performance is investigated under concurrent environmental and seismic loading. The NOWITECH 10 MW...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1200
.... benchmarking performance indicator load case generator power turbine strategic planning and management renewable energy knowledge management support structure mudline rotor speed loading flexcom wind energy steady wind vertical force nrel simulation wave loading rna model fore-aft shear...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1202
... Abstract This paper presents preliminary results of an extensive programme of three-dimensional finite element analyses investigating the behavior of laterally loaded piles embedded in soft and stiff clay soils. This paper is primarily focused on larger piles with diameters varying between 4m...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1206
... will be addressed in this paper. This will include geotechnical aspects like determination of the seismic loading, damping and liquefaction. Another focus area will be the seismic load calculation and the details of combining the earthquake impact with wind and wave loads acting on the wind turbine...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1220
... systems to support the wind turbine which increases the levelized cost of energy (LCOE) produced by the unit. As such, foundation technologies that minimize turbine motions and structural loads while enabling smaller, more economical platforms and mooring systems are of great interest and a key ingredient...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1221
... of the floating structure in the frequency domain is presented and the corresponding RAO's are calculated. The hydrodynamic characteristics are determined using matched axisymmetric eigen-function expansions, while the linearized loading contributed by the WT (gravitational, inertial and aerodynamic) is estimated...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1164
... ABSTRACT Offshore wind turbines located in sea ice zones are subjected to severe ice-induced vibration. The present study uses a three-dimensional pendulum tuned mass damper (3d-PTMD) to mitigate the nacelle/tower and foundation dynamic response under the combined action of wind and ice loading...

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