Results 221 to 230 of about 7,893 (252)
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Formulation of ship roll damping models from free-decay data
Ocean Engineering, 2023Dong Zhang, Wentao Wang, Shuxia Bu
exaly +2 more sources
Roll Damping Decay of a FPSO With Bilge Keel
Volume 7: CFD and VIV, 2013The roll damping decay is investigated for a Floating Production Storage and Offloanding (FPSO). For this purpose, a roll decay test of FPSO is simulated by means of the numerical solution of the incompressible two-dimensional Navier-Stokes equations.
Gustavo O. Guarniz Avalos +2 more
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Numerical investigations on roll decay of a lifeboat in calm water and waves
Ocean EngineeringJiangyan Shao, Gi-Su Song
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Analysis of the Roll Decay Motion for a Patrol Boat by URANS Simulations
Volume 5: Polar and Arctic Sciences and Technology; CFD and VIV, 2009The simulations of the flow around a vessel of the Italian Navy in free roll decay have been carried out by the numerical solution of the Reynolds Averaged Navier-Stokes equations. The focus is on the analysis of the roll motion coefficients (damping and period of oscillations) at different Froude and Reynolds numbers.
Broglia R, Muscari R, Di Mascio A
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A Study of the Roll Motion by Means of a Free Decay Test
Journal of Offshore Mechanics and Arctic Engineering, 2010In this study, a method for the extraction of damping by tracing free roll decay is presented. For this purpose, in calm waters, a bulk carrier model is given a large initial roll angle and then released. Consequently, the roll motion is recorded.
Hamid Zeraatgar +2 more
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The decay of stresses induced by flat rolling of metal strip
International Journal of Mechanical Sciences, 1993zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Domanti, S. +3 more
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Martensite decay during rolling contact fatigue in ball bearings
Metallurgical Transactions A, 1976During rolling contact fatigue of ball bearings structural changes may occur below the raceway, in the region of maximum shear stress. A great number of 6309 type bearings were tested at two stress levels for varying numbers of revolutions, and the resulting structural changes in the inner rings were studied by optical and electron microscopy.
H. Swahn, P. C. Becker, O. Vingsbo
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An Exponential Decay Model for Decaying of Contact Patch Friction Steering Moment with Rolling Speed
Tire Science And TechnologyABSTRACT Steering torque is a very important quantity for the driver's response. In fact, it gives the driver an idea of the road adherence condition during driving. Several models have been developed to simulate shear forces at the contact patch; most of them are based on semi-empirical tire models that account for slip and slip angles.
Jai Prakash +2 more
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Application of wavelet transforms to the decoupling of free-roll decay data
Ocean Engineering, 2003This study presents the results of the decoupling of a free-roll decay test by wavelet transforms. A free-roll decay test was performed to determine the coefficients of damping terms in equations of motion. No motion of the model was restricted during the experiment. A slight yaw motion was found while the model was in the free-roll decay motion.
S.H. Kwon, D.W. Kim, H.S. Lee
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Free Roll Decay Study of a Damaged Ship for CFD Validation
Volume 6: Ocean Engineering, 2011Among many factors to be considered for higher safety level requirements, the hull stability in intact and damaged conditions in seaway is of utmost importance. Since the assessment of the damaged stability is complicated due to the highly non-linear behavior, it is widely acknowledged that computational fluid dynamics (CFD) methods are the only viable
Sungkyun Lee +4 more
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