Academic literature on the topic 'Safety against capsizing'

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Journal articles on the topic "Safety against capsizing"

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Munro, Michael C., and Abbas Mohajerani. "Slope stability evaluation of iron ore fines during marine transport in bulk carriers." Canadian Geotechnical Journal 55, no. 2 (2018): 258–78. http://dx.doi.org/10.1139/cgj-2016-0468.

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A commodity, such as iron ore fines, shifting in the hold of a bulk carrier can lead to the vessel listing or capsizing. The objective of this study is to investigate the factors of safety pertaining to slope failure for both untrimmed and trimmed cargoes of iron ore fines during marine transportation. To determine the shear strength parameters needed to perform this analysis, triaxial testing was performed on samples of iron ore fines under varying densities and moisture contents. Using the shear strength parameters of the material, the Morgenstern–Price method of slices and infinite slope an
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Deleanu, Dumitru, Constantin Louis Dumitrache, and Mihaela Turof. "ON THE ABILITY OF DIFFERENTIAL TRANSFORM METHOD AND ITS IMPROVEMENTS TO SOLVE PROPERLY THE SHIP’S ROLL EQUATION." International Journal of Manufacturing Economics and Management 4, no. 2 (2024): 88–98. https://doi.org/10.54684/ijmem.2024.4.2.88.

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A major concern regarding the ship safety is related to severe rolling oscillations which, in certain circumstances, can even lead to its capsizing. Assuming the rolling motion decoupled from its other five possible motions, one results a mathematical model associated to a second order differential equation where the main parameters (inertia, damping, stiffness and excitation) reveal a significant nonlinearity. In the absence of exact analytical solutions, the amplitude and period characteristics of the ship rolling can be evaluated by approximate numerical or analytical methods. In this work,
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Zhang, Zhenhao, Guoqing Wei, Zhe Zeng, and Fengwei Teng. "The Safety Assessment of Civil Ships against Capsizing Based on the Probability Analysis of Multiple Threshold-crossings of Stochastic Sea Waves." ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part B: Mechanical Engineering, October 11, 2024, 1–28. http://dx.doi.org/10.1115/1.4066829.

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Abstract This paper investigates the impact of threshold-crossing events on ship capsizing through a probabilistic model that predicts random wave heights. Utilizing statistical data from wave height observations, this paper proposes that random waves can be approximated and modeled using the Wiener process, employing autocorrelation function identification and probabilistic statistical verification methods. The threshold-crossing duration of a random wave is just the period of the wave exceeds a given threshold, which can reflect the frequency property of the stochastic sea waves. And the pro
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Wawrzyński, Wojciech, and Przemysław Krata. "METHOD FOR SHIP'S ROLLING PERIOD PREDICTION WITH REGARD TO NON-LINEARITY OF GZ CURVE." Journal of Theoretical and Applied Mechanics 54, no. 4 (2017). https://doi.org/10.15632/jtam-pl.54.4.1329.

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The paper deals with the problem of prediction of the rolling period. A special emphasis is put on the practical application of the new method for rolling period prediction with regard to non-linearity of the GZ curve. The one degree-of-freedom rolling equation is applied with using the non-linear stiffness moment and linear damping moment formulas. A number of ships are considered to research the discrepancies between the pending GM based IMO--recommended method and the results of conducted numerical simulations performed for a wide range of operational loading conditions. Since the research
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Conference papers on the topic "Safety against capsizing"

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Kuehnlein, Walter L., and K. E. Brink. "Model Tests for the Validation of Extreme Roll Motion Predictions." In ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2002. http://dx.doi.org/10.1115/omae2002-28269.

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At present common stability criteria are based on practical knowledge gained from the operation of ships. Therewith the assessment of ship safety against capsizing is partly determined by long-term statistics of accidents. Regulations like the IMO-Resolution A 167 do not rate the typical seakeeping characteristics of different hull form geometries. Therefore strictly speaking, these criteria are just applicable for ships of similar types as included in statistics. Rapid development in ship design calls for the determination of ship and cargo safety in regard of extreme roll motions or capsizin
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Rathje, Helge, Ole Hympendahl, Jan Kaufmann, and Thomas E. Schellin. "Stability Requirements of Multi-Purpose Ships for Heavy Lifts." In ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/omae2013-10035.

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New minimum intact stability criteria are presented to ensure safety against capsizing invoked by sudden loss of crane load during heavy lifts at sea, followed by typical sample stability assessments for a lifting operation on four multipurpose ships. For added stability, two of these ships had a pontoon attached at their sides opposite the lift. Two numerical time-domain methods assessed the transient dynamic heel after a sudden loss of crane load. With the ship at equilibrium, both analyses started by releasing the crane load, simulating a sudden failure of the lifting gear. The first method
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Liu, Yachong, Ankang Hu, Fenglei Han, and Yu Lu. "Numerical Method Research on Nonlinear Roll System of Large Container Ship." In ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/omae2015-41493.

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When dealing with the ship-roll problem, the roll motion is mainly regarded as a single degree-of-freedom dynamical system, and the nonlinear properties are reflected in the nonlinear damping term and restoring moment term. Previous studies have shown that transverse chaotic phenomenon means the damage of ship-roll stability which will lead to ship capsizing, and for ultra large container ships, the wind area above water surface can not be neglected, which turns the ship-roll system into asymmetric dynamical system. The concept of safe basin is usually used to express the boundedness of motion
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Ghamari, Isar, Odd M. Faltinsen, and Marilena Greco. "Investigation of Parametric Resonance in Roll for Container Carrier Ships." In ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/omae2015-41528.

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Parametric roll resonance is of concern for container and fishing vessels, especially in head-sea waves. Here this phenomenon is investigated with a numerical method based on potential-flow theory with viscous corrections for the roll damping. The seakeeping problem is handled by considering a strip theory and assuming a 5-DOF system. Nonlinearities are accounted for in the Froude-Krylov and hydrostatic loads. The solver has been validated against experiments on a C11 class container carrier ship in terms of parametric resonance occurrence and features for different ship forward speeds and hea
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