Ship Structural Analysis And Design Pdf

ship structural analysis and design pdf

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Ship Structural Design - Owen F. Hughes

Unless otherwise stated, all rights belong to the author. You may download, display and print this publication for Your own personal use. Commercial use is prohibited. JavaScript is disabled for your browser. Some features of this site may not work without it. Thesis advisor s : Varsta, Petri, Prof.

Abstract: At present ships are designed to satisfy the minimum requirements for safety. And history shows that this practice does not suffice, and nor is it sustainable.

A new paradigm is needed. This thesis aims to contribute in that respect by proposing a design method that should move ship safety beyond the minimum requirements as much as possible and as long as it is economically sound.

The thesis focuses mostly on environmental safety in the event of accidents such as collisions and grounding. A special feature is the consideration of maritime stakeholder preferences regarding safety and profitability. This is an underlying element in all the analysis performed and conclusions reached. Parts: [Publication 1]: A. Klanac, R. Jalonen, and P. Vectorization and constraint grouping to enhance optimization of marine structures. Marine Structures, volume 22, number 2, pages By permission.

Optimization of crashworthy marine structures. Marine Structures, volume 22, number 4, pages Design of marine structures with improved safety for environment.

Reliability Engineering and System Safety, volume 96, number 1, pages Name: isbn Size: 1. Format: PDF. Name: publication1. Size: 2. Name: publication2. Size: Name: publication3. Name: publication4. Send Feedback. Design method for safe ship structures. Klanac, Alan. Sovelletun mekaniikan laitos Department of Applied Mechanics. Marine engineering. This design method features new approaches in multi-objective optimization of ship structures and in advanced decision making for design selection.

The multi-objective optimization is based on evolutionary algorithms, more precisely the genetic algorithm GA with advanced treatment of design constraints and objectives. Through the approach of vectorization, the GA becomes not only more efficient, but also more flexible in use, bearing in mind the complexity and demands of accident analysis for optimization.

The decision making is established on the concepts of Game Theory, resulting in a new criterion for design selection, the Competitive Optimum, based on the maximal concurrent satisfaction of stakeholder preferences. The proposed design method is intended in particular for ship structural design projects, permitting the definition of hull structural scantlings, or even hull topology if desired.

The approaches to multi-objective optimization and design selection that are introduced possess a wider basis of application, and are extensible to other fields in maritime safety and naval architecture. The results of the thesis provide several relevant conclusions with an impact on practical naval architecture.

For example, i by increasing ship crashworthiness, significant risk reduction can be attained, ii raising safety is economically justified if the benefits to the public are considered alongside those of the industry, and iii the crashworthiness of ships can be controlled effectively with conventional double-bottom and double-sided structures.

Lecture Notes for Engineering 5003 – Ship Structures I

The content of this volume was written based on the decades of experience of the author as well as his years of lecturing in the university. Since the subject lectures were left unpublished for so many years, the decision was made by the author to compile this perfect book and provide all information and knowledge needed by and useful to the students, in a single and comprehensive volume. All of the calculations are duly explained in a way making them understandable to the students at all levels. The content is divided in three parts, the first one dealing with the areas, volume, and center of gravity, giving some very general considerations on the subject. The second part of the book is devoted entirely to the ship calculations. The third part addresses the strength of ships together with all associated calculations.

The text uses a rationally-based design approach design from first principles , which is ideally suited to preliminary structural design. One of the advantages of this approach is that, unlike all earlier design methods, it applies to all types of ships. Moreover, this approach allows the designer to achieve an optimum structure, according to their own particular measure of merit, such as least life-cycle cost, least weight, or any combination of these. As in the original book, the underlying theory has been verified through extensive testing and implemented in MAESTRO, a leading ship structural design program. Reply Toggle Dropdown Quote.

For a structure as large and as complex as a ship there are three levels of structural design, the second and most central of which is the subject of this book. Concept design deals with the topology or overall ge ometry of the structure; preliminary design establishes the scantlings structural dimensions of all principal structural members; and detail design is concerned with local aspects such as joints, openings, and rein forcements. Overall structural geometry is generally determined by overall design requirements rather than by structural requirements, while detail design is largely guided and constrained by fabrication methods and requirements. Also, since local structural details are numerous and basically similar among various structures they lend themselves to standardization and to design from handbooks and structural codes. Thus, it is in preliminary design where the structural designer has the largest number of signifi cant decisions and options, and the greatest scope for optimizing the structure so that it best fulfi lls the objectives and satis fi es all of the various constraints and requirements. Rationally-based design is design from fi rst principles using the tools of modern engineering science: computers and the methods of structural analysis and optimization which computers have made possible.


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Design method for safe ship structures

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Unless otherwise stated, all rights belong to the author. You may download, display and print this publication for Your own personal use. Commercial use is prohibited. JavaScript is disabled for your browser.

Роскошная обстановка, как в лучших отелях. Розы, шампанское, широченная кровать с балдахином. Росио нигде не. Дверь, ведущая в ванную, закрыта.

Сьюзан перевела взгляд на помост перед кабинетом Стратмора и ведущую к нему лестницу. - Коммандер. Молчание. Тогда она осторожно двинулась в направлении Третьего узла.

Бринкерхофф провел с ней наедине несколько приятных и, как ему казалось, тайных встреч в кладовке.

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