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Keywords: damping
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Proceedings Papers

Proc. ASME. OMAE2021, Volume 2: Structures, Safety, and Reliability, V002T02A036, June 21–30, 2021
Paper No: OMAE2021-61424
... in an increase of the maximum hull girder bending moment experienced by the vessel as well as an increase in the fatigue accumulation of critical details. In this research, we present damping estimates based on in-service measurements from a container ship. An array of accelerometers was used to derive...
Proceedings Papers

Proc. ASME. OMAE2021, Volume 8: CFD and FSI, V008T08A029, June 21–30, 2021
Paper No: OMAE2021-62387
... with a heave plate near the free surface is proposed as an energy dissipation device for both heave and pitch responses. Numerical simulation using Computational Fluid Dynamics (CFD) is used for capturing the flow around the curved neck with heave plate and corresponding damping characteristics. CFD free decay...
Proceedings Papers

Proc. ASME. OMAE2021, Volume 10: Petroleum Technology, V010T11A071, June 21–30, 2021
Paper No: OMAE2021-61985
... Proceedings of the ASME 2021 40th International Conference on Ocean, Offshore and Arctic Engineering OMAE2021 June 21-30, 2021, Virtual, Online OMAE2021-61985 EVALUATION OF BELLEVILLE SPRINGS AND DAMPING THROUGH STATIC CYCLIC LOADING HYSTERESIS FOR PVARD OPTIMIZATION: PART-I Abdelsalam...
Proceedings Papers

Proc. ASME. OMAE2019, Volume 10: Ocean Renewable Energy, V010T09A073, June 9–14, 2019
Paper No: OMAE2019-96168
... in the field. It is further presented how the characteristics of the measured dynamic response change with loading over a long period and the way the response characteristics relate to the basic features of the developed models. offshore wind turbine field measurements macro-element damping stiffness...
Proceedings Papers

Proc. ASME. OMAE2013, Volume 5: Ocean Engineering, V005T06A032, June 9–14, 2013
Paper No: OMAE2013-10437
... Heave plates are installed in Spar platforms to improve the heave motion performance of the platforms. The heave plates not only increase the equivalent added mass of the platform but also provide extra damping to the system. This article presents an experimental study on the hydrodynamic...
Proceedings Papers

Proc. ASME. OMAE2011, Volume 1: Offshore Technology; Polar and Arctic Sciences and Technology, 627-635, June 19–24, 2011
Paper No: OMAE2011-49948
... installation numerical analyses damping dynamic amplification 1 Copyright © 2011 by ASME Proceedings of the ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering OMAE2011 June 19-24, 2011, Rotterdam, The Netherlands OMAE2011-49948 NUMERICAL ANALYSIS OF A NOVEL METHOD...
Proceedings Papers

Proc. ASME. OMAE2010, 29th International Conference on Ocean, Offshore and Arctic Engineering: Volume 1, 127-134, June 6–11, 2010
Paper No: OMAE2010-20138
... and pitch motion equations of DDMS platform are established with accounting the time-varying restoring heave and pitch restoring stiffness. A damping case matrix is generated considering the heave plate damping, mooring line damping and hull drag damping. The damping ratios are identified by free-decay...
Proceedings Papers

Proc. ASME. OMAE2009, Volume 1: Offshore Technology, 701-709, May 31–June 5, 2009
Paper No: OMAE2009-79766
... Navier Stokes Equations (RANSE). The free surface is modelled by a Volume of Fluid (VOF) approach. The results in this paper show a good agreement between experimental results and numerical results of both methods for aircushion pressure variations, added mass, damping and wave elevations inside...
Proceedings Papers

Proc. ASME. OMAE2008, Volume 1: Offshore Technology, 371-377, June 15–20, 2008
Paper No: OMAE2008-57410
... of the moonpool. monocolumn moonpool appendages heave plate damping additional Proceedings of the ASME 27th International Conference on Offshore Mechanics and Arctic Engineering OMAE2008 June 15-20, 2008, Estoril, Portugal 1 Copyright © 2008 by ASME Kazuo Nishimoto1 (knishimo@usp.br) Isaías Quaresma...
Proceedings Papers

Proc. ASME. OMAE2004, 23rd International Conference on Offshore Mechanics and Arctic Engineering, Volume 1, Parts A and B, 885-891, June 20–25, 2004
Paper No: OMAE2004-51495
... 05 01 2009 In simulation of 1 st -order wave-induced motion of vessels it is sometimes necessary to express frequency-dependent added mass and damping in time-domain formulation. One way to do this is to transform the frequency dependence into retardation functions. During simulation...
Topics: Damping
Proceedings Papers

Proc. ASME. OMAE2004, 23rd International Conference on Offshore Mechanics and Arctic Engineering, Volume 3, 773-786, June 20–25, 2004
Paper No: OMAE2004-51397
..., unsymmetrical, fluid structure interaction problems. Damping is an important, but poorly understood, component of the response prediction models developed for modeling such systems. In particular, there is a scarcity of good data on damping of flexible cylinders vibrating in uniform and non-uniform external...
Proceedings Papers

Proc. ASME. OMAE2005, 24th International Conference on Offshore Mechanics and Arctic Engineering: Volume 1, Parts A and B, 665-671, June 12–17, 2005
Paper No: OMAE2005-67332
... tests were performed in order to verify the external viscous damping to be considered in the numerical calculations. The calibrated numerical model transfer functions (RAO) were compared with regular and transient wave tests, where heave and moonpool heave amplitudes could be compared. Moonpool...