Download or read book Nonlinear Time domain Simulation of Fishing Vessel Capsizing in Quartering Seas written by and published by . This book was released on 1998 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ship design practice has been to measure stability by static criteria and to compensate for dynamic effects through a margin of safety. However, there is a fundamental difference between static and dynamic stability. Certain factors that result in favorable static stability characteristics may actually present greater danger when considered in light of a dynamic analysis. Traditional linear strip theory methods are not suitable for assessing ship capsizing. The main objective of the present project has been to investigate the capabilities of the 3-D nonlinear time domain Large Amplitude Motion Program (LAMP) for the evaluation of fishing vessels operating in extreme waves. The project's focus was building upon the previous LAMP development and extending it to the modeling of maritime casualties, including a time domain simulation of a ship capsizing in stern quartering seas. This modeling capability will allow both the analysis of recorded casualties and the identification of potential safety concerns.
Download or read book Nonlinear Time domain Simulation of Ship Capsizing in Beam Seas written by Woei-Min Lin and published by . This book was released on 1997 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nonlinear Time Domain Simulation of Ship Capsizing in Beam Seas written by and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ship design practice has been to measure stability by static criteria and to compensate for dynamic effects through a margin of safety. However, there is a fundamental difference between static and dynamic stability. Certain factors which result in favorable static stability characteristics may actually present greater danger when considered in light of a dynamic analysis. The traditional linear strip theory method is not suitable for assessing ship capsizing. This report presents a state of the art nonlinear simulation method, LAMP (Large Amplitude Motion Program), for the evaluation of ship operation in extreme seas. The intent of the study was to modeZ maritime casualties, including a time domain simulation of a ship capsizing in beam seas. A 400-foot (122-meter) Series 60, C sub B = 0.7 ship with the center of gravity, CG, located amidships and 2.07 ft (0.63 m) below the design waterline is used as an example in this study. This ship satisfies the U.S. Coast Guard's minimum Metacentric Height, or GM, requirement for large cargo ship. It is shown in the report that capsizing can happen due to dynamic effects even for ships that satisfy the minimum GM requirement.
Download or read book Nonlinear Ship Motion Models to Predict Capsize in Regular Beam Seas written by Young-Woo Lee and published by . This book was released on 2001 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Fifth International Conference in Ocean Engineering ICOE2019 written by Vallam Sundar and published by Springer Nature. This book was released on 2020-11-08 with total page 551 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises the proceedings of the Fifth International Conference in Ocean Engineering (ICOE2019) focusing on emerging opportunities and challenges in the field of ocean engineering and offshore structures. Some of the themes covered in this volume are offshore structures and deepwater technology, ocean optics & acoustics, ocean renewable energy, marine spatial planning, climate change impacts & disaster risk reduction, etc. The essays are written by leading international experts, making it a valuable resource for researchers and practicing engineers alike.
Download or read book Practical Design of Ships and Other Floating Structures written by Tetsuo Okada and published by Springer Nature. This book was released on 2020-10-05 with total page 1072 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers the peer-reviewed proceedings of the 14th International Symposium, PRADS 2019, held in Yokohama, Japan, in September 2019. It brings together naval architects, engineers, academic researchers and professionals who are involved in ships and other floating structures to share the latest research advances in the field. The contents cover a broad range of topics, including design synthesis for ships and floating systems, production, hydrodynamics, and structures and materials. Reflecting the latest advances, the book will be of interest to researchers and practitioners alike.
Download or read book Naval Engineers Journal written by and published by . This book was released on 1997 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Broaching of a fishing vessel in following and quartering seas written by Naoya Umeda and published by . This book was released on 1994 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes bibliographical references.
Download or read book Contemporary Ideas on Ship Stability and Capsizing in Waves written by Marcelo Almeida Santos Neves and published by Springer Science & Business Media. This book was released on 2011-07-03 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last decade significant progress has been made in the field of ship stability. Yet in spite of the progress made, numerous scientific and practical challenges still exist with regard to the accurate prediction of extreme motion and capsize dynamics for intact and damaged vessels, the probabilistic nature of extreme events, criteria that properly reflect the physics and operational safety of an intact or damaged vessel, and ways to provide relevant information on safe ship handling to ship operators. This book provides a comprehensive review of the above issues through the selection of representative papers presented at the unique series of international workshops and conferences on ship stability held between 2000 and 2009. The editorial committee has selected papers for this book from the following events: STAB 2000 Conference (Launceston, Tasmania), 5th Stability Workshop (Trieste, 2001), 6th Stability Workshop (Long Island, 2002), STAB 2003 Conference (Madrid), 7th Stability Workshop (Shanghai, 2004), 8th Stability Workshop (Istanbul, 2005), STAB 2006 Conference (Rio de Janeiro), 9th Stability Workshop (Hamburg, 2007), 10th Stability Workshop (Daejeon, 2008), and STAB 2009 Conference (St. Petersburg). The papers have been clustered around the following themes: Stability Criteria, Stability of the Intact Ship, Parametric Rolling, Broaching, Nonlinear Dynamics, Roll Damping, Probabilistic Assessment of Ship Capsize, Environmental Modelling, Damaged Ship Stability, CFD Applications, Design for Safety, Naval Vessels, and Accident Investigations.
Download or read book Proceedings written by and published by . This book was released on 1977 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Model Tests and Numerical Simulation of Ship Capsizing in Following Seas written by William J. Fallon and published by . This book was released on 1980 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents some comparisons of experimental data and computational simulations of the severe roll motion and capsizing of ships operating in following seas. Earlier reports have described experiments conducted using radio-controlled ship models in San Francisco Bay for the purpose of studying the phenomenon of ship capsizing and the initial development of a computer simulation of the same phenomenon. The present report describes experiments conducted in the towing tank using three models: a Mariner class cargo ship, a model of the SL7 container ship, and a west coast crab fishing boat. The principal objectives of these experiments was to provide data with which to test the simulator program. In addition to these experiments, the report describes some studies made using a simple one-degree-of-freedom simulator program. A final Appendix contains a description of the simulator program and instructions for its use. (Author).
Download or read book Development of a Time Domain Simulation for Ship Capsizing in Following Waves written by David M. Bovet and published by . This book was released on 1973 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report describes the development of a time domain computer simulation for ship capsizing in following waves. A survey of the recent literature in this field is presented. The formmulation of the present approach is discussed, along with computer program limitations and assumptions. The program developed is used to study the phenomenon of low cycle roll resonance as demonstrated by a two-dimensional section in forced heave motion and by a fast cargo liner in following waves, both regular and irregular. (Modified author abstract).
Download or read book Model Tests and Numerical Simulation of Ship Capsizing in Following Seas written by and published by . This book was released on 1981 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Time domain Simulation of Nonlinear Ship Motions and Wave Loads written by and published by . This book was released on 1999 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the assessment of the ability of a ship structure to withstand specified sea environments with an acceptable risk of failure, accurately predicted loads are vital. Of paramount importance are extreme loads on the hull structure, which usually occur when a ship undergoes large heaving & pitching motions in rough seas, sometimes accompanied by impacts between the bow & waves. This paper describes the application of strip theory to time domain calculations of non-linear ship motions and hull-girder loads in head seas. In this approach, the differential equations of ship motion are solved numerically by calculating hydrodynamic forces & coefficients at each time step by strip theory, taking into account nonlinearities relating to large relative motion between waves & the ship hull. The results indicate the usefulness of this approach compared to the conventional linear frequency-domain approach.
Download or read book Transactions The Society of Naval Architects and Marine Engineers written by Society of Naval Architects and Marine Engineers (U.S.) and published by . This book was released on 1990 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: List of members in vols. 1-24, 38-54, 57.
Download or read book The Effects of Wave Groups on the Nonlinear Simulation of Ship Motion in Random Seas written by Jeffrey A. Richer and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Historically, the analysis of ship motion and loading responses has been performed in the frequency domain with both linear response amplitude operators and wave energy density spectra. This method, therefore, did not account for the nonlinear nature of waves. A more precise method is to obtain the response in the time domain, processing non-linear wave data with a linear response amplitude operator. Since the input is non-linear, even though the system is linear, the output will also be non-linear. This resultant data can then be used to generate a more accurate design of seaworthy vessels. Furthermore the linear frequency domain method does not account for the presence or effects of wave groups. This study shows the improved accuracy in the response obtained by accounting for non-linearities and furthermore indicates that wave groups affect the vertical relative motion of a moored ship (zero-speed).
Download or read book Twenty Second Symposium on Naval Hydrodynamics written by National Research Council and published by National Academies Press. This book was released on 2000-03-02 with total page 1039 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Twenty-Second Symposium on Naval Hydrodynamics was held in Washington, D.C., from August 9-14, 1998. It coincided with the 100th anniversary of the David Taylor Model Basin. This international symposium was organized jointly by the Office of Naval Research (Mechanics and Energy Conversion S&T Division), the National Research Council (Naval Studies Board), and the Naval Surface Warfare Center, Carderock Division (David Taylor Model Basin). This biennial symposium promotes the technical exchange of naval research developments of common interest to all the countries of the world. The forum encourages both formal and informal discussion of the presented papers, and the occasion provides an opportunity for direct communication between international peers.
