Investigation Into Ultimate Strength Of Ship Structures
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Investigation Into Ultimate Strength Of Ship Structures
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Author : Aneri Kaitara
language : en
Publisher:
Release Date : 1999
Investigation Into Ultimate Strength Of Ship Structures written by Aneri Kaitara and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with ANSYS (Computer system) categories.
19 November 1999.
Buckling And Ultimate Strength Of Ship And Ship Like Floating Structures
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Author : Tetsuya Yao
language : en
Publisher: Butterworth-Heinemann
Release Date : 2016-08-11
Buckling And Ultimate Strength Of Ship And Ship Like Floating Structures written by Tetsuya Yao and has been published by Butterworth-Heinemann this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-08-11 with Technology & Engineering categories.
Buckling and Ultimate Strength of Ship and Ship-like Floating Structures provides an integrated state-of-the-art evaluation of ship structure mechanics including buckling, plastic failure, ultimate strength, and ultimate bending moments. For the design of any industrial product, it is necessary to understand the fundamentals in the failure behavior of structures under extreme loads. Significant developments have been made in understanding the analysis method of plastic collapse and behavior and strength of structures accompanied by buckling. Written by two of the foremost experts in international ship design and ocean engineering, this book introduces fundamental theories and methods as well as new content on the behavior of buckling/plastic collapse that help explain analysis like the initial imperfections produced by welding and the ultimate strength of plates, double bottom structures of bulk carriers, and ship and FPSO hull girders in longitudinal bending. Rounding out with additional coverage on floating structures such as oil and gas platforms and LNG/FLNG structural characteristics, Buckling and Ultimate Strength of Ship and Ship-like Floating Structures is a must-have resource for naval architects and other marine engineering professionals seeking to gain an in-depth understanding of the technological developments in this area. Explains how the initial imperfections produced by welding, residual stress, and initial deflection in panels influence the collapse behavior and the compressive ultimate strength of rectangular plates Evaluates the ultimate strength of plate girders under bending and shearing as well as combined bend/shear loads Provides fundamental theories, simple formulas, and analytical methods such as Finite Element Method or Smith's Method to simulate and evaluate buckling/plastic collapse behavior and strength of plates under various conditions Authored by two of the foremost experts in international ship design and ocean engineering Includes additional coverage on floating structures such as oil and gas platforms
An Analysis Into The Uncertainty Of Stiffened Panel Utlimate Strength
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Author : Robert Henry Vroman
language : en
Publisher:
Release Date : 1995
An Analysis Into The Uncertainty Of Stiffened Panel Utlimate Strength written by Robert Henry Vroman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Naval architecture categories.
The objective of this project is to determine the level of uncertainty associated with the ultimate strength predictions generated by the standard design algorithm used in stiffened panel design of ship structures. This investigation into the modes of ultimate failure of stiffened panels is divided into three approaches: experimental tests of grillages in the USNA Ship Structures Laboratory, analysis of historical stiffened panel test data found in the literature, and non-linear finite element analysis. By comparing the predicted failure stress and deflections between the various methods, the level and areas of uncertainty can be recognized and quantified. Three tests were conducted in the USNA Ship Structures Laboratory. The data from these tests were compared to the historical tests found in the literature. A statistical data analysis was conducted to determine the most important factors influencing the modeling bias associated with stiffened panel ultimate strength. The non-linear finite element analysis of the USNA grillage was able to model the buckling of the panel but could not solve for the post-buckling behavior. Further experimental tests and finite element models need to be tested in order to confirm the validity of some of the predicted values and the overall reliability of the method -- Author abstract.
Ultmat A Program For Predicting The Ultimate Strength Of Ship Cross Sections
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Author : Canada. Dept. of National Defence. Research and Development Branch
language : en
Publisher: Dartmouth, N.S. : Defence Research Establishment Atlantic
Release Date : 1985
Ultmat A Program For Predicting The Ultimate Strength Of Ship Cross Sections written by Canada. Dept. of National Defence. Research and Development Branch and has been published by Dartmouth, N.S. : Defence Research Establishment Atlantic this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Hulls (Naval architecture) categories.
The theory and use of the computer program 'ULTMAT' is discussed in this report. It is the result of an initial investigation into ultimate strength analysis and is intended to serve as a basis for further development in this area. The program incorporates the theory of Faulkner for ultimate strength estimation. Given the geometric properties of a ship cross section, the program works interactively to predict the maximum load which the section can withstand before catastrophic collapse. In this manner, it provides an estimation of the reserve strength of a structure when taken beyond its linear elastic limit. Keywords: Ultimate strength; Buckling; Ship structures; Plastic analysis; Nonlinear stress analysis.
Ships And Offshore Structures Xix
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Author : Carlos Guedes Soares
language : en
Publisher: CRC Press
Release Date : 2015-09-03
Ships And Offshore Structures Xix written by Carlos Guedes Soares and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-09-03 with Technology & Engineering categories.
This three-volume work presents the proceedings from the 19th International Ship and Offshore Structures Congress held in Cascais, Portugal on 7th to 10th September 2015. The International Ship and Offshore Structures Congress (ISSC) is a forum for the exchange of information by experts undertaking and applying marine structural research.The aim of
Analysis Of Slamming Induced Whipping Effects Over The Ultimate Strength Of Ships
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Author : George Jagite
language : en
Publisher:
Release Date : 2020
Analysis Of Slamming Induced Whipping Effects Over The Ultimate Strength Of Ships written by George Jagite and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
The first part of this thesis is dedicated to the numerical investigations of dynamic ultimate strength for various ship structures. In order to analyze the influence of the inertia and strain rate effects, different load functions are used, starting from the simplest ones where the loads are defined as half-sine functions, to more realistic ones where the loads are induced by equivalent design waves. The dynamic ultimate strength is defined as the maximum load level that leads to a non-collapse scenario, and it is determined through a newly developed iterative algorithm. Finally, the dynamic ultimate strength is compared with the quasi-static ultimate strength, and the dynamic load factors are derived in order to obtain a proper estimator of the dynamic collapse effect. The second part of the thesis is dedicated to the development of a new method to calculate the non-linear whipping response, where the elastoplastic structural response is considered. The hull girder is modeled as two non-uniform beams, connected with a non-linear hinge, described by the non-linear relation between the internal bending moment and the relative rotation angle. The hydrodynamic problem is solved using the 3D boundary element method. Then, the fully coupled hydro-elastoplastic problem is solved within a partly non-linear time-domain seakeeping program. The calculations are perfomed on a broad range of ships on different realistic loading scenarios Finally, the non-linear and linear whipping resposnes are compared in order to derive the dynamic ultimate capacity factors.
Hull Girder Ultimate Strength And Fracture Toughness Of Damaged Marine Structures
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Author : Özgür Özgüç
language : en
Publisher:
Release Date : 2006
Hull Girder Ultimate Strength And Fracture Toughness Of Damaged Marine Structures written by Özgür Özgüç and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
This thesis addresses the structural performance of the hull structure of a vessel in extreme response state of a combined loading consisting of vertical and horizontal moments for intact and damaged conditions, where fracture mechanics of ships with large damage openings are investigated in great detail. The motivation for conducting this research task is the importance of the ultimate and post-ultimate strength in relation to the reliability of intact as well as damaged vessels. Moreover, in an emergency situation, knowledge of the structural capacity of the vessel in whatever damaged or intact condition it may be in, is crucial to allow for a rational decision to be made regarding possible salvage, or at worst disembarkation of the crew, in the interest of safety for human life, environmental protection, and capital investment. To facilitate these requirements, the overall objective of the present research therefore becomes to build a rapid computer based analysis tool for calculation of the ultimate and post-ultimate capacity of the hull girder in intact and damaged states of combined bending moment loading. Then, to verify the accuracy of the procedure developed against available experimental results and by comparison with other theoretical results. To meet this objective essentially requires five sub-tasks to be completed. Hence, the scope of the work to be carried out becomes - A study of literature for the available methods usable to evaluate the ultimate and post-ultimate capacity of the stiffened plates - Developing the new simple design equations for predicting the ultimate strength of stiffened plates with imperfections in the form of imperfections, where a non-linear finite element method is employed on a wide range of typical ship panel geometries. The new simplified analytical method must be generalized to deal with such combined load cases. The performance of the proposed equations must be also verified by experimental results. - Establishing a rapid computer code based on simplified formulas developed for calculation of the ultimate capacity of the hull girder. This program must be capable of considering initial imperfections and must be compared with other theoretical approaches developed. - The influence of the coupled bending moment on the intact & damaged ship structures must be extensively investigated. The rational interaction equations must be developed, which based on the extensive ship types. - Accidents such as collision, grounding and explosions occur and can have major consequences to the ship structure. The effect of such large damages on the hull girder must be assessed under time pressure. The recent accident with the PRESTIGE shows the importance of being able to reliably assess the longitudinal strength of damaged vessels. The procedures for this must be developed. A major drawback is lack of knowledge of the failure mechanism that may play a role in such circumstances. Therefore, the fracture mechanism of damaged ships is essential. Key effects must be identified and if possible, included in the procedure. When these five points have been addressed, and the objectives solved, all that is needed for the development of a computer code for the ultimate strength. The remaining final task will thus to be benchmark the code against available experimental results and other theoretical methods.
A Guide For The Analysis Of Ship Structures
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Author : National Research Council (U.S.). Committee on Ship Structural Design
language : en
Publisher:
Release Date : 1960
A Guide For The Analysis Of Ship Structures written by National Research Council (U.S.). Committee on Ship Structural Design and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1960 with Naval architecture categories.
Local Strength Of Ship Structures
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Author : Piero Caridis
language : en
Publisher: CRC Press
Release Date : 2024-03-21
Local Strength Of Ship Structures written by Piero Caridis and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-03-21 with Technology & Engineering categories.
Ship structures can be extremely large, and their structural arrangements are often complex and of a considerable variety. Local Strength of Ship Structures examines the basic aspects of ship structural analysis and design using mathematical tools, with an emphasis on an understanding of the physics of the behaviour of these structures. A fundamental understanding of these concepts is essential to use computer‐based tools effectively. In addition to mathematical models, reference is made to test data that have been obtained over many years and used to gain insight into ship structural behaviour. Features: Provides an introduction to local ship strength problems, structural arrangements and the different types of materials used in ship construction Examines the fundamentals of engineering mechanics with a particular focus on marine structure problems Covers the basics of ship structural analysis and design using mathematical tools
Ultimate Strength Of A Ship Hull Under Vertical Bending Moment
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Author : Joe-Ming Yang
language : en
Publisher:
Release Date : 1990
Ultimate Strength Of A Ship Hull Under Vertical Bending Moment written by Joe-Ming Yang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.