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Keywords: nonlinear
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Proceedings Papers

Proc. ASME. OMAE2021, Volume 4: Pipelines, Risers, and Subsea Systems, V004T04A008, June 21–30, 2021
Paper No: OMAE2021-62970
... ABSTRACT Figure 1: A marine riser evolves into a wine glass. Analytical, experimental and computational models have 2. BACKGROUND historically been heavily simplified, linearized, and otherwise The US Navy has been developing nonlinear physics-based reduced. This paper shows how such model reductions...
Proceedings Papers

Proc. ASME. OMAE2020, Volume 6B: Ocean Engineering, V06BT06A074, August 3–7, 2020
Paper No: OMAE2020-18214
... of the different cases, establishing a direct relation between the change in wave resistance and the energy content variation of the particular wave spectrum components. Keywords: Prolate Spheroid, Nonlinear, Boundary Conditions, Free-Surface NOMENCLATURE a1 spheroid major semiaxis a2, a3 spheroid minor semiaxis...
Proceedings Papers

Proc. ASME. OMAE2020, Volume 6A: Ocean Engineering, V06AT06A016, August 3–7, 2020
Paper No: OMAE2020-18901
.... By implementing the Kelvin-Newman wave current interaction approach up to the wave s second order, we can assess the performance of the Kelvin-Newman wave current interaction formulation in various sea conditions. Keywords: Wave-Current Interaction, Kelvin-Newman, Difference Frequency, Nonlinear, Second Order 1...
Proceedings Papers

Proc. ASME. OMAE2020, Volume 8: CFD and FSI, V008T08A025, August 3–7, 2020
Paper No: OMAE2020-18329
... nonlinear physics-based time- domain simulations to show how fluid drag evolves geometric changes in slender (long and thin) structures. We then showed how these changes physically determine the specific dynamic nature of the vibrations that the fluid can induce in the structure. Induced vibrations are four...
Proceedings Papers

Proc. ASME. OMAE2019, Volume 5B: Pipelines, Risers, and Subsea Systems, V05BT04A049, June 9–14, 2019
Paper No: OMAE2019-96826
... of the flexible joint. Thus, modelling the flexible joint stiffness to accurately simulate the behavior under cyclic bending cycles is critical in global riser fatigue analysis. The load-displacement relationship of a flexible joint typically follows a nonlinear curve, and it shows hysteresis behavior when...
Proceedings Papers

Proc. ASME. OMAE2010, 29th International Conference on Ocean, Offshore and Arctic Engineering: Volume 4, 621-628, June 6–11, 2010
Paper No: OMAE2010-21060
... on boundary surfaces. Time-stepping scheme is adopted to simulate the wave generated by the catamaran with a uniform speed in deep water. The values of the potential and position of the free surface are updated by integrating the nonlinear Lagrangian free surface boundary conditions for every time. A moving...
Proceedings Papers

Proc. ASME. OMAE2010, 29th International Conference on Ocean, Offshore and Arctic Engineering: Volume 5, Parts A and B, 943-950, June 6–11, 2010
Paper No: OMAE2010-20919
... Forensic Analysis Index of Priority Risk (IPR) Localized Buckling Pipeline Integrity Probability of Occurrence Rating (POR) Nonlinear Stress corrosion cracking (SCC) von Mises Stress Solid Model ULS (Ultimate Limit State) AN EFFICIENT FIELD ASSESSMENT OF OFFSHORE PIPELINE DAMAGE James Wang, Msc...
Proceedings Papers

Proc. ASME. OMAE2009, Volume 2: Structures, Safety and Reliability, 63-73, May 31–June 5, 2009
Paper No: OMAE2009-79076
.... FPSO Collision damages Residual strength Ultimate capacity Collapse Post-collapse Finite element analysis Nonlinear Benchmark study Proceedings of the ASME 28th International Conference on Ocean, Offshore and Arctic Engineering OMAE2009 May 31 - June 5, 2009, Honolulu, Hawaii ve , E Mar...
Proceedings Papers

Proc. ASME. OMAE2009, Volume 1: Offshore Technology, 661-665, May 31–June 5, 2009
Paper No: OMAE2009-79697
... into mooring stiffness and can be added in the differential equations of motion, which is calculated at its equilibrium point. For linear hydrodynamic analysis in frequency domain, any physical quantity should be linear or be linearized, however mooring stiffness is nonlinear in essence, so the tangent...
Proceedings Papers

Proc. ASME. OMAE2008, Volume 1: Offshore Technology, 637-644, June 15–20, 2008
Paper No: OMAE2008-57588
... 27 07 2009 Nonlinear dynamic analysis for offshore structures has been a major challenge in marine structures and earthquake engineering. Nonlinear Dynamic Analysis of the structures subjected to strong ground motions is the most reliable prediction method. This method is very complex...
Proceedings Papers

Proc. ASME. OMAE2007, Volume 2: Structures, Safety and Reliability; Petroleum Technology Symposium, 307-314, June 10–15, 2007
Paper No: OMAE2007-29432
... for nonlinear pile soil structure interaction effects. Based on a previously developed numerical BNWF-FE model for nonlinear seismic response of offshore platforms, in this paper, sensitivity of seismic response of an existing sample offshore platform to different earthquake events (with different duration...
Proceedings Papers

Proc. ASME. OMAE2007, Volume 2: Structures, Safety and Reliability; Petroleum Technology Symposium, 315-322, June 10–15, 2007
Paper No: OMAE2007-29470
... 22 05 2009 Offshore platforms in seismically active areas should be designed to survive severe earthquake excitations with no global structural failure. In seismic design of offshore platforms, it is often necessary to perform a dynamic analysis that accounts for nonlinear soil-pile...
Proceedings Papers

Proc. ASME. OMAE2002, 21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 1, 817-824, June 23–28, 2002
Paper No: OMAE2002-28582
... Pile foundations supporting offshore platforms and marine structures are required to resist dynamic lateral loading due to wind and wave forces. The response of a jacket offshore tower is affected by the foundation flexibility and the nonlinear behaviour of the supporting piles. In the present...
Proceedings Papers

Proc. ASME. OMAE2003, Volume 1: Offshore Technology; Ocean Space Utilization, 11-17, June 8–13, 2003
Paper No: OMAE2003-37005
... Complex responses observed in an experimental, nonlinear, moored structural system subjected to nearly periodic wave excitations are examined and compared with the simulations of a newly proposed independent-flow-field (IFF) model in this paper. Variations in wave heights are approximated...
Proceedings Papers

Proc. ASME. OMAE2003, Volume 1: Offshore Technology; Ocean Space Utilization, 3-9, June 8–13, 2003
Paper No: OMAE2003-37004
... An independent-flow-field (IFF) model selected in this study to investigate the nonlinear response behavior of a medium-scale, experimental, submerged, moored structure is validated via parametric studies. Bifurcations in experimental responses are frequently observed and the associated...
Proceedings Papers

Proc. ASME. OMAE2004, 23rd International Conference on Offshore Mechanics and Arctic Engineering, Volume 1, Parts A and B, 893-900, June 20–25, 2004
Paper No: OMAE2004-51498
... The nonlinear dynamic response of jacket-type offshore platform (which has been installed in Persian Gulf) under simultaneously wave and earthquake loads is conducted. The interaction between soil and piles is modeled by Konagai-Nogami model. The structure is modeled by finite element method...
Proceedings Papers

Proc. ASME. OMAE2004, 23rd International Conference on Offshore Mechanics and Arctic Engineering, Volume 1, Parts A and B, 9-16, June 20–25, 2004
Paper No: OMAE2004-51006
... Pile supported offshore platforms in seismically active areas should be designed to survive severe earthquake excitations with no global structural failure. It is often required to perform nonlinear seismic analysis of offshore platforms that accounts for soil nonlinearity, discontinuity...
Proceedings Papers

Proc. ASME. OMAE2005, 24th International Conference on Offshore Mechanics and Arctic Engineering: Volume 1, Parts A and B, 681-688, June 12–17, 2005
Paper No: OMAE2005-67344
... Nonlinear response of piles is the most important source of potentially nonlinear behavior of pile-supported offshore platforms due to earthquake excitations. Earthquake design of offshore platforms is one of the main parts in offshore platforms design on which seismic soil pile structure...
Proceedings Papers

Proc. ASME. OMAE2006, Volume 1: Offshore Technology; Offshore Wind Energy; Ocean Research Technology; LNG Specialty Symposium, 187-194, June 4–9, 2006
Paper No: OMAE2006-92180
... Offshore platforms in seismically active areas should be designed to survive severe earthquake excitations with no global structural failure. In seismic design of offshore platforms, it is often necessary to perform a dynamic analysis that accounts for nonlinear pile soil structures interaction...