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1-20 of 423
Keywords: natural frequency
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Proceedings Papers
Analysis of the Effect of Different Moonpool Opening Shapes on the Motion Response of Deep-Sea Mining Ship
Available to Purchase
Paper presented at the The 35th International Ocean and Polar Engineering Conference, June 1–6, 2025
Paper Number: ISOPE-I-25-022
... mining ships. Extensive research has recently been conducted on moonpool characteristics. Fluid motion in moonpools can be categorized into two types: piston and sloshing. Fluid resonance occurs when the external load frequency matches the moonpool's natural frequency. Using potential flow theory, Molin...
Proceedings Papers
Effect of Tower Flexibility on the Global Performance of a TLP Floating Wind Turbine
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Paper presented at the The 35th International Ocean and Polar Engineering Conference, June 1–6, 2025
Paper Number: ISOPE-I-25-030
... of computing mooring system flexible tower tendon tension wind turbine rigid tower relative variation effect flexibility subsea system platform sustainability natural period sustainable development offshore wind turbine tlp fowt nacelle acceleration pitch motion natural frequency...
Proceedings Papers
Numerical Analysis of Effects of Wind-Wave-Current Interactions on the Performance of Floating Offshore Wind Turbine
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Paper presented at the The 35th International Ocean and Polar Engineering Conference, June 1–6, 2025
Paper Number: ISOPE-I-25-043
... is amplified under wind-wave-current interactions. In PSD analysis, there are three frequency bands: low, medium, and high, which are dominated by natural frequencies, harmonics of wave and rotor, respectively. Based on Liutex-Omega vortex identification method, it can be observed that the wake fluctuation...
Proceedings Papers
Numerical Investigation on Nonlinear Hydroelastic Responses of a Container Ship by CFD-FEA Coupling Method
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Paper presented at the The 35th International Ocean and Polar Engineering Conference, June 1–6, 2025
Paper Number: ISOPE-I-25-491
... mathematics of computing hydroelastic response reservoir simulation ship motion vbm segmented model natural frequency order harmonic numerical investigation interaction container ship equation of state frequency response cfd nonlinear hydroelastic response Proceedings of the Thirty-fifth...
Proceedings Papers
Wave-Induced Vibration Analysis of Fishing Vessel Based on Full-Scale Testing and Numerical Simulation
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Paper presented at the The 35th International Ocean and Polar Engineering Conference, June 1–6, 2025
Paper Number: ISOPE-I-25-575
... numerically for global vibration analyses. And the natural frequencies and modal shapes of the vessel are calculated, so as to compare the numerical simulation results to the measured data. Finally, in order to reduce the vibration, local finite element models of different modified sub-structures are analyzed...
Proceedings Papers
Numerical Study of Free-Surface Behavior in Sloshing Flows within a Circular Tank
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Paper presented at the The 35th International Ocean and Polar Engineering Conference, June 1–6, 2025
Paper Number: ISOPE-I-25-602
... tank vertical excitation surface elevation free surface excitation condition natural frequency excitation frequency simulation surface height Proceedings of the Thirty-fifth (2025) International Ocean and Polar Engineering Conference Seoul/Goyang, Korea, June 1-6, 2025 Copyright © 2025...
Proceedings Papers
Dynamic Analysis of a Floating Offshore Wind Turbine Using a Time-Domain Coupled Method with Load Reconstruction
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Paper presented at the The 35th International Ocean and Polar Engineering Conference, June 1–6, 2025
Paper Number: ISOPE-I-25-056
... system stress spectrum mathematics of computing sustainable development spectrum geology frequency platform geologist social responsibility wave frequency natural frequency ocean engineering foundation dynamic response fairlead fowt offshore wind turbine motion frequency semi fatigue...
Proceedings Papers
Phase III of OUCwind-HFDR Project: The Experimental Study on the Effects of Cable Structural Properties on the Cable-Stayed Tower Structure of a Semi-Submersible Floating Wind Turbine
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Paper presented at the The 35th International Ocean and Polar Engineering Conference, June 1–6, 2025
Paper Number: ISOPE-I-25-057
... turbines (Ashuri et al., 2016; Sahu, 2018). For the design criteria of the tower structures of floating wind turbines, the first-order fore-aft and side-side natural frequencies are critical properties to be carefully considered, to avoid the structural resonance easily stimulated by the aerodynamic...
Proceedings Papers
Phase II of OUCwind-HFDR Project: The Experimental Study on the High-Order Hydrodynamic Loads of a 10 MW Semi-Submersible Floating Wind Turbine
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Paper presented at the The 35th International Ocean and Polar Engineering Conference, June 1–6, 2025
Paper Number: ISOPE-I-25-059
... remain the primary research focus. social responsibility wave load semi sustainable development platform sustainability subsea system dynamic response surge force frequency wave load oucwind amplitude order hydrodynamic load natural frequency wind turbine potential flow theory...
Proceedings Papers
Optimization of Power Take-Off for a Wave Energy Converter Positioned Near a Vertical Seawall
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Paper presented at the The 35th International Ocean and Polar Engineering Conference, June 1–6, 2025
Paper Number: ISOPE-I-25-090
... natural frequency Proceedings of the Thirty-fifth (2025) International Ocean and Polar Engineering Conference Seoul/Goyang, Korea, June 1-6, 2025 Copyright © 2025 by the International Society of Offshore and Polar Engineers (ISOPE) ISBN 978-1-880653-74-6; ISSN 1098-6189 www.isope.org Optimization...
Proceedings Papers
Centrifuge Test Study of the Influence of Scouring on Lateral Bearing Capacity and Natural Frequency of Offshore Wind Turbines
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Paper presented at the The 35th International Ocean and Polar Engineering Conference, June 1–6, 2025
Paper Number: ISOPE-I-25-201
... ABSTRACT To better understand the lateral bearing capacity and natural frequency of offshore wind turbine (OWT), a centrifuge test was carried out with monopile and high-rise pile cap (HPC) foundation. The effects of scouring depths on natural frequency and lateral resistance were investigated...
Proceedings Papers
Study on the Influence and Equivalent Estimation Method of Scour on Dynamic Characteristics of Monopile Supported Offshore Wind Turbine Under Different Soil Parameters
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Paper presented at the The 35th International Ocean and Polar Engineering Conference, June 1–6, 2025
Paper Number: ISOPE-I-25-202
.... It will reduce pile embedment depth, lower effective stress in the surrounding soil, and may affect the structure's natural frequency (Harris and Whitehouse, 2017). To estimate the impact of scour on pile foundation natural frequency, Peder and Boibsen (2013) used the American Petroleum Institute (API) p-y...
Proceedings Papers
Foundation Damping for Monopiles in Sand from 1g Model Tests
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Paper presented at the The 35th International Ocean and Polar Engineering Conference, June 1–6, 2025
Paper Number: ISOPE-I-25-183
... of steel, in which only a certain number of cycles can be withstood at given strain and stress amplitudes. The natural frequency of an offshore wind turbine (OWT) mainly depends on the mass distribution and the restoring forces, which are caused by the partially elastic behaviour of the soil. Thus...
Proceedings Papers
Developing a High-Fidelity Coupled Analysis Tool for Vortex-Induced Vibrations of Catenary Flexible Structures
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Paper presented at the The 35th International Ocean and Polar Engineering Conference, June 1–6, 2025
Paper Number: ISOPE-I-25-426
... geometries remains relatively unexplored compared to straight or vertical configurations. equation of state reservoir simulation natural frequency flow direction position catenary flexible structure vibration configuration acceleration response time history nonlinear catenary flexible...
Proceedings Papers
Research on Vibration Characteristics of Lattice Meta Materials Sandwiched Panel Structure
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Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-489
... of sandwich panel structures, and conduct numerical calculations and simulation calculations. Study the natural frequencies and vibration modes of sandwich panel lattice structures with different topological configurations under four simply supported conditions; Conduct multi parametric analysis to study...
Proceedings Papers
Transverse Vibration Characteristics of Rectangular Thin Plates with Moving Point Supports
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Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-462
... asia government point support vibration characteristic natural frequency equation Proceedings of the Thirty-third (2023) International Ocean and Polar Engineering Conference Ottawa, Canada, June 19-23, 2023 Copyright © 2023 by the International Society of Offshore and Polar Engineers (ISOPE...
Proceedings Papers
The Coupled Motion of Crane Vessel and Crane Load in Waves: Physical, Analytical and Numerical Modelling
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Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-117
... matrix operation artificial intelligence rao simulation crane vessel crane load crane load motion natural frequency crane pendulum lift condition crane operation model test load case simulation model originate Proceedings of the Thirty-third (2023) International Ocean and Polar...
Proceedings Papers
An Experimental Assessment of the Effect of Directional Spreading on Mooring Line Loads for the Multi-Float M4 WEC
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Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-110
... frequency wave energy converter line load experimental assessment standard deviation energy converter natural frequency significant wave height Proceedings of the Thirty-third (2023) International Ocean and Polar Engineering Conference Ottawa, Canada, June 19-23, 2023 Copyright © 2023...
Proceedings Papers
OpenFOAM Modelling the Equilibrium and Free-Decay Tests of a Semi-Submersible FOWT Model
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Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-061
... - one is a static equilibrium test and the other is the heave decay test to determine the natural frequencies of the coupled floater-mooring system. The numerical modelling is carried out in a numerical wave tank using high-fidelity computational fluid dynamics based on the OpenFOAM toolbox...
Proceedings Papers
Operational Modal Analysis of Monopile Offshore Wind Turbine Using In-Situ Monitoring Data
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Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-115
... turbine wind turbine main wind direction monopile owt monopile offshore wind turbine natural frequency excitation parameter identification frequency identification result characteristic Proceedings of the Thirty-third (2023) International Ocean and Polar Engineering Conference Ottawa, Canada...
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