Ship structural design a rationally-based computer-aided optimization approach

Notes for an undergraduate course miller and stettler, 2017 the principles of naval architecture series. Offersunusual solutions for the problems of personal effectiveness. Theory the formulation of maestros limit states is covered in hughes, ship structural design a rationally based, computeraided, optimization approach, published by sname an overview of all limit states is given in the maestros manual. Milestone events and major innovations will be identified in several categories of ship design application with the principal emphasis on the methodologies, the modeling and the integration of the ship design process. Coupled bendingtorsional vibration of a cracked hollow beam.

A rationallybased, computer aided optimization approach, is used by naval architects the world over. Nowadays the most usual method for stress calculating of these structures is the finite element method, where the hull plating are modeled as shells elements and stiffener beams as membrane elements as well as beam elements with attached plate. A moduleoriented tool for optimum design of stiffened. Analysis and design of ship structure 18 figure 18. International association of classification societies iacs. Computeraided design applications in ship and floating. Even if the range of design problems to which optimization is applicable has been extended, most ship designs use an iterative and manual approach due to the. Nov 01, 2010 five decades of computer aided ship design five decades of computer aided ship design nowacki, horst 20101101 00. In this shipsizing optimization, the general dimensions and the hull forms are considered as fixed. Pdf design method of hull structure model for ultimate. Society of naval architects and marine engineers u. So far, the generation of a hull structural analysis model, that is, a finite element model of a hull structure, has been manually performed by a designer using design experience, and thus has. Requirements of structural design structural design is an iterative process through which the layout and scantlings for a structure are determined, such that it meets all the requirements of structural adequacy. Hulls naval architecture, naval architecture, strength.

A time domain simulation method for ship motion and load prediction. A method for reliabilitybased sensitivity analysis of. Ppt maestro ship structural design powerpoint presentation. Eurocode 3, 2005 design and construction of steel structures part 1. Then you can start reading kindle books on your smartphone, tablet, or computer no kindle device required. The design solutions must realize low light ship weights and production costs in order to be economically competitive. Be the first to ask a question about ship structural analysis and design. Like other optimization problems in this field, the time cost has a great influence on structural optimization. A rationallybased, computeraided, optimization approach ocean engineering sep 1, 1983. The second school is the rationally based structural design.

Sep 29, 2017 this chapter introduces hull structural design considerations for design loads and various strengths based on the csr common structural rules. Strength of ships and ocean structures mansour and liu, 2008 ship structural analysis and design hughes and paik, 2010 ship structural design. Based on the several practical research on real ship hull ultimate strength model test, a design method of hull structure model for ultimate strength test, which combine the numerical simulation. Next, the proposed system is demonstrated to be applicable through a numerical example applied to a simple box girder with longitudinal stiffeners. Challenges in computer applications for ship and floating structure design and analysis r. A rationallybased, computeraided, optimization approach ocean engineering owen f.

A rationallybased, computeraided, optimization approach 0471032417, 9780471032410 unconventional wisdom irreverentsolutions for tough problems at work, thomas l. Mar 01, 2012 read challenges in computer applications for ship and floating structure design and analysis, computer aided design on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. The vertical bending moments associated with ultimate failure and first failure for a given ship crosssection are evaluated using an optimization based method and the progressive collapse method, respectively. The term ship structural optimization has a different meaning according to the person or the group for whom the study is done. Toward a unified approach to ship structural safety. A method for reliabilitybased sensitivity analysis of ships. Five decades of computeraided ship design, computeraided.

Computeraided design, also of ships, claims to use computers only as an aid in design decisions. Five decades of computeraided ship design sciencedirect. In this analysis, structural optimization essentially consists of defining optimum scantling of the decks and the bottom and side shells including the framing. A rationallybased, computeraided optimization approach. Structural resistance, loading, plating thickness and crosssectional area of beam are considered as stochastic variables. Thayamballi computer aided ship structural design assessment of potential technical and economic benefits of a computeraided ship structural design system the application of computer technology to structural design would serve to improve design efficiency and reduce costs. A rationallybased, computeraided, optimization approach hughes.

A rationallybased, computeraided, optimization approach owen hughes on. Five decades of computeraided ship design computeraided. Search for library items search for lists search for contacts search for a library. A rationally based, computer aided, optimization approach. Research results reveal that this new method could substantially reduce the computational cost of the rationalbased optimization problem without decreasing its accuracy, which increases the feasibility and economic efficiency of using a rationalbased optimal design method in ship structural design.

These basic objectives are not new, but the approach to achieving viable and attractive solutions has changed significantly during the recent five decades of computeraided ship design. Milestone events and major innovations will be identified in several categories of ship design application with the. Reinforced panels basically compose a ship structure like many other light structures. Sep 08, 2004 the coupled flexuraltorsional vibration equations of a floating beam model, considering added fluid masses, are developed. Sname society of naval architects and marine engineers, jersey. Optimisation of passenger ship structures in concept. Five decades of computeraided ship design five decades of computeraided ship design nowacki, horst 20101101 00. Ship design methods, computer tools, computer aided design, computer aided engineer. Hughes is the author of ship structural analysis and design 4. Ship design remains a human task supported by computers. It defines the generic ship design optimisation problem for life cycle and discusses the implementation of the holistic approach to ship design on the basis of a typical ship design optimisation problem with multiple objectives and constraints, namely the design of an aframax tanker ship. As the concept of concurrent engineering has emerged along with support for optimization techniques, lots of endeavors have been made to apply optimization techniques to real design problems for holistic decisionmaking.

Simulation of discrete stochastic systems for ship design and operation, lecture notes. A rationallybased, computeraided optimization approach owen f. This book focuses on the most complex aspects of ship structural design which is preliminary design and will benefit structural designers and students. An internationally recognized nonprofit, technical, professional society of individual members serving the maritime and offshore industries and their suppliers. A rationallybased, computeraided, optimization approach environmental science and technology ocean engineering john wiley and sons series. An improved numerical model for calculating ship hull frame transversal structure. On the limitations of two and threedimensional linear. With the rapid popularization and development of computeraided ship design, this has become an important research direction of ship design. A rationallybased, computeraided optimization approach, edited by the sname, new jersey, 566p.

Finally, features of the structural reliability and sensitivity factors of a highspeed container ship based on collapse mode analysis are investigated by applying the newly developed system. Pdf an improved numerical model for calculating ship. Reliability analysis and reliability based design optimization of large scale boxgirder structural system is an interesting topic in the field of structural design. Ship structural analysis and design hughes and paik, 2010.

These models are convenient when used for analysis problems. A rationallybased, computeraided optimization approach, the society of naval architects and marine engineers sname. Incorporation of structural health monitoring data on load. Pdf holistic ship design optimization researchgate. Computeraided ship structural design sciencedirect. To get the free app, enter your mobile phone number. Hughes, who could be considered as a father of this methodology, 3 further states.

Ship structural design, a rationallybased, computeraided, optimization approach. Alexandria university faculty of engineering department of naval architecture and marine engineering ship structural design 1 mr 341 3 rd marine 3 bibliography 1 chalmers, d. The formulation of maestro s limit states is covered in hughes, ship structural design a rationally based, computeraided, optimization approach, published by sname an overview of all limit states is given in the maestros manual. Rationallybased fatigue design of tankers ship structure. A rationallybased, computeraided, optimization approach. A rationallybased, computeraided, optimization approach, 1983, 566 pages, owen f. Optimisation of passenger ship structures in concept design. A rationallybased, computeraided, optimization approach environmental science and technology ocean engineering john wiley and sons series ocean engineering wiley series on ocean engineering wileyinterscience publication. Need for practical, rationallybased, preliminary fatigue design traditional rulebased structural design is not valid when considering new and different ship types, and may not be valid when operating conditions for a ship are not in the typical range. This paper presents an optimization method for concept design state of passenger ship with focus on utilisation of efficient finite element modelling, evolutionary optimisation algorithm and.

These basic objectives are not new, but the approach to achieving viable and attractive solutions has changed significantly during the recent five decades of computer aided ship design. For a merchant ship under the current computing environment, ship structural optimization usually lasts several weeks or months. His widely known book published with sname, ship structural design. The prior information on the waveinduced load effects is calculated based on the linear theory. Structural optimization for conversion of aluminum car ferry to.

A rationallybased,computeraided, optimization approach 0471032417, 9780471032410 unconventional wisdom irreverentsolutions for tough problems at work, thomas l. A rationallybased, computeraided, optimization approach ocean engineering hughes, owen f. A rationallybased, computeraided, optimization approach ocean engineering. First course in numerical analysis, pwn, warsaw, 1975 7 konieczny l. Theory the formulation of maestros limit states is covered in hughes, ship structural design a rationally based, computeraided, optimization approach, published by sname an overview of. Thus there is a need for a rationallybased design method, where the actual anticipated load. A free powerpoint ppt presentation displayed as a flash slide show on id.

Five decades of computeraided ship design computer. Alexandria university faculty of engineering department of naval architecture and marine engineering ship structural design 1 mr 341 3 rd marine 4 1. Buy ship structural analysis and design by owen f hughes online at alibris. Only the frame and stiffener spacing are used as topological design variables. Common structural rules for double hull oil tankers. A rationallybased, computeraided, optimization approach hughes, owen on. These optimization methods are powerful tools that greatly reduce the complexity of design work and improve the quality of the final solution. A new rationalbased optimal design strategy of ship. A hull structure is a frame of ship which consists of a number of hull structural parts such as plates, stiffeners, brackets, and so on. For a structure as large ans 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. Hughes society of naval architects and marine engineers, 2005 transportation 609 pages. General rules and rules for buildings, en 199311, cen, brussels hugues o.