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Torsion And Shear Stresses In Ships

Author: Mohamed Shama
Publisher: Springer Science & Business Media
ISBN: 9783642146336
Size: 44.28 MB
Format: PDF
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In the last few decades, much research work was conducted to improve ship structure analysis and design. Most of the efforts were directed to improve the strength of hull girder and to use the method of finite element analysis more efficiently and effectively. Because of the high degree of complexity of ship structures the interaction between hull girder strength and local strength require special attention. The complex system of stresses could produce unacceptable deformations and high values of equivalent stresses. This book covers an area of ship structure analysis and design that has not been exhaustively covered by other books on ship structures in a simple form. It presents the basic concepts of the methods and procedures required to calculate torsion and shear stresses in ship structures. Moreover, it is enhanced with a set of some solved and unsolved problems, very useful for students of naval and marine engineering.

Buckling Of Ship Structures

Author: Mohamed Shama
Publisher: Springer Science & Business Media
ISBN: 3642179614
Size: 73.24 MB
Format: PDF, ePub
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Buckling of Ship Structures presents a comprehensive analysis of the buckling problem of ship structural members. A full analysis of the various types of loadings and stresses imposed on ship plating and primary and secondary structural members is given. The main causes and consequences of the buckling mode of failure of ship structure and the methods commonly used to control buckling failure are clarified. This book contains the main equations required to determine the critical buckling stresses for both ship plating and the primary and secondary stiffening structural members. The critical buckling stresses are given for ship plating subjected to the induced various types of loadings and having the most common boundary conditions encountered in ship structures. The text bridges the gap existing in most books covering the subject of buckling of ship structures in the classical analytical format, by putting the emphasis on the practical methods required to ensure safety against buckling of ship structural members. It is very useful to ship designers, shipyard engineers, naval architects, international classification societies and also to students studying naval architecture, marine engineering and offshore structures. It is a valuable source for practicing naval architects to quickly check the possibility of buckling of ship structure members without reverting to the complex and costly analysis using advanced FEM software.

Structural And Stress Analysis

Author: T.H.G. Megson
Publisher: Elsevier
ISBN: 0080999379
Size: 16.65 MB
Format: PDF
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The third edition of the popular Structural and Stress Analysis provides the reader with a comprehensive introduction to all types of structural and stress analysis. Starting with an explanation of the basic principles of statics, the book proceeds to normal and shear force, and bending moments and torsion. Building on the success of the prior edition, this edition features new material on structural dynamics and fatigue, and additional discussion of Eurocode compliance in design of beams. With worked examples, practice problems, and extensive illustrations, this book provides an all-in-one resource for students and professionals interested in learning structural analysis. Comprehensive overview of structural and stress analysis Numerous worked examples and end-of-chapter problems Extensively illustrated to help visualize concepts

Design Of Ship Hull Structures

Author: Yasuhisa Okumoto
Publisher: Springer Science & Business Media
ISBN: 3540884459
Size: 18.20 MB
Format: PDF, ePub
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In this book, the four authors show us the condensed experience how to design ship hull structures from a practical viewpoint. In three parts, the book presents the fundamentals, the theory and the application of structural design of hulls. The topics are treated comprehensively with an emphasis on how to achieve reliable and efficient ship structures. The authors have in particular introduced their experiences with the rapid increase of ship sizes as well as the introduction of ship types with a high degree of specialization. The associated early failures of these "new" structures have been analyzed to provide the readers with illustrations why structural design needs to be carried out on several levels in order to ensure that correct loading is applied and that local structural behaviour in properly understood.

Load And Global Response Of Ships

Author: J.J Jensen
Publisher: Elsevier
ISBN: 9780080535562
Size: 66.54 MB
Format: PDF, Kindle
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Load and Global Response of Ships gives an introductory background to naval architecture statistics and strength of materials. Each subject is treated in detail; starting from the first principle. The aim of this title was to derive and present the necessary theoretical framework for predicting the extreme loads and the corresponding hull girder stresses that a ship may be subjected to during its operational lifetime. Although some account is given to reliability analysis, the present treatment has to be supplemented with methods for detailed stress evaluation and for structural strength assessment before a complete structural reliability analysis can be carried out. The classification societies have issued rules and regulations for a proper structural analysis of a ship and selection of the scantlings. Previously, those rules rather explicitly gave formulae for the thickness of the hull plantings, the size of the stiffeners etc. Such empirical rules must necessarily be rather conservative in order to apply to a large variety of ships. With the advent of powerful computers, the rules have changed. Today, the naval architect can perform the structural analysis using mainly rational methods based on first principles. The classification society may then specify proper safety factors against local global failure modes, taking into account the consequences of failure and the analysis procedure used. A cruder method of analysis then necessitates a larger safety factor. Therefore the effort made by the experienced naval architect to perform a detailed structural analysis will be returned not just by a rational structural arrangement but also often in lower weight of the ship and thus a higher payload throughout the operational lifetime of the ship. This analysis has attempted to make explicit one way in which designers limit the design space by creating rules to which they expect users to adhere. It is also an attempt to encourage designers to reconsider the 'rules of use' that they have used in their designs, so as to reconceptualise potential usage. This can help design behaviour where rule use is not blindly followed. By making these rules visible, it is possible to expose the limitations of current technology, and development design solutions that do not restrict use to the 'normal' case of action. Rules are useful to designers because they are simplifications of activity. Rules encode the normal case, and these are simplistic representations of work that are, in many cases, accurate enough for the purpose of design. However, encoding behaviour in rules has dangers in that they do not encompass the whole range of behaviours that can be performed. Using examples, this title shows that being able to break rules means that people are able to engage in a richer more flexible set of actions (and therefore more appropriate to contingency) than when they are constrained to a limited range.

Merchant Ship Stability

Author: A.R. Lester
Publisher: Elsevier
ISBN: 1483102440
Size: 31.22 MB
Format: PDF, Mobi
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Merchant Ship Stability presents the theory and application of methods for maintaining ship stability. It serves as a textbook for deck officers and first year degree students. The book discusses the methods of Simpson's rules for measuring ship form, the principle of floatation, finding the position of the center of gravity, and the effect of the center of gravity of the vessel not being on the centerline, the effect of having liquids within the vessel which are free to move and the effect of suspending weights. Topics on the assessment of stability of large angles of heel, regulations about merchant vessel stability, and dry docking and grounding are provided as well. Deck officers and merchant marine students will find the book very useful.