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Keywords: nonlinearity
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Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-077
... wave direction, we present and validate deterministic WRP algorithms, based on fast nonlinear and dispersive Lagrangian wave models, and integrate their predictions with in-the-loop hardware and a real time control system that is informed by computations with a digital twin (DT) model of the floating...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-172
... upstream oil & gas wave height calculation simulation marine transportation resistance oblique wave sea condition asia government irregular wave oblique irregular wave nonlinearity artificial intelligence wave steepness wave period ship wave spectrum coefficient probability...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-331
... panel method is introduced, where nonlinear free surface boundary condition considering both the influence of steady ship wave and incident wave. In the outer domain, free surface Green's function method is used, where the free surface boundary condition is satisfied automatically. On the control...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-2158
... oil & gas anchor trajectory mohr-coulomb strength theory trajectory assumption analysis step aubeny stress state anchor reservoir simulation body force seabed model nonlinearity cel method deformation shear strength anchor model grid stress distribution installation euler body...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1322
... analysis result fatigue analysis tower platform 8-leg cpt water depth wave period nonlinearity 12-leg cpt subsea system natural period cpt stress check compliant tower platform platform south china sea foundation pile configuration use moses Compliant Piled Tower Technology and its...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-142
... of nonlinearity on the resonant wave patterns is investigated. It is found that, if the steepness is large enough, the crestlines would curve and even split into two shorter crests. Its curvature extent is proportional to the primary waves' steepness and the propagation distance. By contrast, the nonresonant...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-040
... by the nonlinearities of the actuator, such as the input saturation, and actuator efficiency. In this paper, the anti-saturation compensator is employed to reduce the transient response caused by input saturation, and it is integrated into RMRAC. According to the application purpose of underwater vehicle...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-426
... Nonlinear Mechanical Analysis of Reinforced Thermoplastic Pipe under Combined Bending and Pressure Based on a Solid Element Model Lu Yao, Shuqing Wang, Wentao He Shandong Provincial Key Laboratory of Ocean Engineering, Ocean University of China, Qingdao, PR China ABSTRACT The glass-fiber...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-577
... (HAM). It is found that the steady-state resonant waves in finite water depth are widespread. The number of steady-state resonance solutions decreases and eventually disappears as the water depth becomes shallow. In addition, the influence of nonlinearity on steady-state resonance waves in water...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-230
... sea trial test matrix modeling & simulation cable nonlinear equation characteristic vector cable element impulsively position finite element method coupling technique nonlinearity algorithm scenario simulation result equation ABSTRACT In this paper, a numerical...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-381
... loads and fatigue analysis. In this paper, a 3D nonlinear hydroelasticity theory was introduced which is fit for time history simulation in irregular wave conditions. The numerical analysis method utilizes a 3D Green function method and a 2-D momentum model, which are coupled in the time domain...
Proceedings Papers

Paper presented at the The 26th International Ocean and Polar Engineering Conference, June 26–July 2, 2016
Paper Number: ISOPE-I-16-482
... oscillatory motion artificial intelligence triantafyllou neural network national technical university heave identification upstream oil & gas approximator architecture machine learning oscillation active flow control application data series application nonlinearity amplitude flapper fin...
Proceedings Papers

Paper presented at the The 26th International Ocean and Polar Engineering Conference, June 26–July 2, 2016
Paper Number: ISOPE-I-16-680
... Abstract The paper proposes a numerical method for analyzing nonlinear wave loads using a hydroelastic model. The numerical analysis method utilizes a 3-D Green function method and a 2-D momentum model, which are coupled in the time domain. The computational results were compared with those...
Proceedings Papers

Paper presented at the The 26th International Ocean and Polar Engineering Conference, June 26–July 2, 2016
Paper Number: ISOPE-I-16-267
... Intrinsic Finite Element (VFIFE) method with fiber beam element model (VFIFE-fiber model) is developed. Several key factors, such as geometrical nonlinearity, material nonlinearity, and the interaction between axial force and bending moment are considered. A simple and practicable formula for obtaining...
Proceedings Papers

Paper presented at the The 26th International Ocean and Polar Engineering Conference, June 26–July 2, 2016
Paper Number: ISOPE-I-16-084
... Abstract The research on ultimate strength of SWATH under combined loads is important to ensure its safety. In the present research, nonlinear finite element method is adopted to investigate progressive collapse behaviour of a SWATH model under transverse bending moment, longitudinal torsional...
Proceedings Papers

Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-796
... nonlinearity. We study the synergistic dynamic behaviors of the floating airport by using network theory. The phenomenon of amplitude death, a collectively weak oscillatory state, is investigated which is especially important for global stability design of the floating airport in waves. Numerical simulations...
Proceedings Papers

Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-713
... of nonlinearity and viscosity on the wave-induced motion of the oscillating flap are studied as well as the energy absorbing capacity of the device. Parametric analysis has been performed to investigate the dependence of the hydrodynamics of the device on the power take-off system wave energy converter...
Proceedings Papers

Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-284
... as in nonlinearity are derived. For the irrotational part of the flow problem, Boussinesq equations are solved using a finite difference scheme. For the rotational part, generation and transport of vorticity are simulated using a vortex-in-cell method. Two numerical examples are presented to validate...
Proceedings Papers

Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-549
... Abstract A nonlinear response amplitude operator (NRAO) that is able to model a wide class of nonlinear systems and structures, usually found in maritime and offshore applications, is developed. Its functional scheme is of the Volterra-series type and its order is explicitly dictated from...
Proceedings Papers

Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-384
... deformation integrated with weighted deformation. The calculation method is verified by simulating the ship model test of DTMB5512 conducted by IIHR ship hydrodynamics group. It is shown that: the nonlinear motions of ships in waves are affected by various factors, such as the influence of encounter...

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