Results 11 to 20 of about 4,462 (291)
NUMERICAL AND EXPERIMENTAL CALCULATION OF ROLL AMPLITUDE EFFECT ON ROLL DAMPING [PDF]
Brodogradnja, 2019 Roll motion is still a challenging problem in naval architecture and an adequate prediction of this physical phenomenon is important because of its undesirable effects such as capsizing.
Burak Yıldız +3 more
doaj +5 more sources
Nonlinear roll damping of a barge with and without liquid cargo in spherical tanks [PDF]
Journal of Ocean Engineering and Science, 2016 Damping plays a significant role on the maximum amplitude of a vessel's roll motion, in particular near the resonant frequency. It is a common practice to predict roll damping using a linear radiation–diffraction code and add that to a linearized viscous
Wenhua Zhao, Mike Efthymiou
exaly +4 more sources
Ship roll damping control [PDF]
Annual Reviews in Control, 2012 The technical feasibility of roll motion control devices has been amply demonstrated for over 100 years. Performance, however, can still fall short of expectations because of difficulties associated with control system designs, which have proven to be far from trivial due to fundamental performance limitations and large variations of the spectral ...
Tristan Perez, Mogens Blanke
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Ship roll damping via direct inverse neural network control system [PDF]
Alexandria Engineering Journal, 2018 Undesired roll motions of surface vessels under sea way have negative influence on passengers, crew members, equipment and cargo. Damping roll motions is a complex problem due to unpredictable and irregular nature of marine environmental disturbances ...
Taher Awad +2 more
doaj +2 more sources
Numerical Assessment of Roll Motion Characteristics and Damping Coefficient of a Ship
Journal of Marine Science and Engineering, 2018 Accurate calculation of the roll damping moment at resonance condition is essential for roll motion prediction. Because at the resonance condition, the moment of inertia counteracts restoring moment and only the damping moment resists increase in the ...
S S Kianejad, Hossein Enshaei
exaly +3 more sources
Numerical roll damping prediction of a planing hull [PDF]
Ships and Offshore Structures, 2020 In this study, the roll damping coefficients of a high-speed planing hull are calculated numerically in order to show the effects of forward speed, roll amplitude and oscillation frequency.
Emre Kahramanoglu +3 more
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Analisa Perubahan Panjang Model FPU Barge Terhadap Koefisien Linier dan Kuadratik Roll Damping [PDF]
Kapal, 2018 Roll damping sangat berperan penting pada maksimum roll terutama pada daerah resonansi disekitar roll natural period. Dalam prediksi gerak roll, prediksi roll damping dilakukan dengan metode difraksi radiasi yang menambahkan viscous roll damping dari ...
Baharuddin Ali +3 more
doaj +3 more sources
Estimation Methods for the Roll Damping Ratio of Floating Structures [PDF]
한국해양공학회지This study compares four estimation methods for determining the roll damping ratio using a series of free roll decay tests conducted in a two-dimensional wave tank.
Hyun Jung Park +6 more
doaj +2 more sources
Ship Roll Damping Analysis [PDF]
, 2017 The increased demand for transport capacity led to new hull designs with a large bow flare that are able to carry more containers. These new hull shapes influence the ship stability and may lead to large roll angle amplitudes, which lead to high accelerations and thereby to a high safety risk for human life, ship and cargo.
Piehl, Henry
openaire +3 more sources