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Keywords: nonlinearity
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Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-2158
... upstream 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...
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
... resonance wave primary wave nonlinearity amplitude surface elevation fluid mech resonant interaction wave pattern investigation wave interaction phillips oblique gravity wave train crestline interaction bonnefoy steepness ABSTRACT The resonant interactions of two oblique...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-040
... underwater vehicle rmrac anti-windup compensator disturbance equation depth channel vehicle subsea system actuator matrix input saturation noise nonlinearity autonomous underwater vehicle vehicle model adaptive control controller machine learning remotely operated vehicle...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-577
... nonlinearity resonant wave component finite water depth ABSTRACT Considering whether or not the energy spectrum of wave field evolving over time, the wave resonance problems can be divided into unsteady-state wave resonance and steady-state wave resonance problems. The steady-state resonant wave...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-426
... upstream oil & gas rotation angle initial external pressure collapse envelope failure mode reinforcement layer system rtp loading path external pressure critical pressure thermoplastic pipe hdpe strength failure mechanical behaviour nonlinearity different loading path p...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-230
... ABSTRACT In this paper, a numerical algorithm for a fully coupled simulation of a cable and a tow-body system is presented. The nodal position finite element method was applied to analyze the nonlinear cable dynamics, and 6DOF nonlinear equations of motion were utilized for describing the 3D...
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
... ship hull girder bearing platform transverse swath progressive collapse analysis outer shell ship structure marine transportation nonlinear finite element method element method smith method ultimate strength shipbuilding complex loading condition nonlinearity loading path...
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-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-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...
Proceedings Papers

Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-413
... Abstract A two-dimensional, fully nonlinear numerical wave tank (NWT) is established to study wave interactions with a submerged circular cylinder undergoing large-amplitude heave motions. The mixed Eulerian-Lagrangian approach is applied for the time stepping of free surface. The boundary...
Proceedings Papers

Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-394
... is not appropriate. And the boundary value of the wave steepness is suggested. wave spectra wave steepness second-order wave group irregular wave group groupiness nonlinearity numerical model engineering spectrum simulation method simulated wave reservoir simulation wave groupiness wave spectrum...
Proceedings Papers

Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-554
... depth, the nonlinear problems of RTP and pipe-lay platform under the dynamic action of environmental load are studied, the analysis modes of axial tension failure and bending shear failure of the RTP are mastered, and the theoretical guidance and failure analysis for RTP laying are provided. In the end...

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