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Design And Optimization Of Metal Structures

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Design and Optimization of Metal Structures

Design and Optimization of Metal Structures Book
Author : J Farkas,K Jarmai
Publisher : Elsevier
Release : 2008-04-01
ISBN : 1782420479
Language : En, Es, Fr & De

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Book Description :

An industrial book that analyses various theoretical problems, optimizes numerical applications and addresses industrial problems such as belt-conveyor bridge, pipeline, wind turbine power, large-span suspended roof and offshore jacket member. Multi-storey frames and pressure vessel-supporting frames are discussed in detail. The book’s emphasis is on economy and cost calculation, making it possible to compare costs and make significant savings in the design stages, by, for example, comparing the costs of stiffened and un-stiffened structural versions of plates and shells. In this respect, this book will be an invaluable aid for designers, students, researchers and manufacturers to find better, optimal, competitive structural solutions. Emphasis is placed on economy and cost calculation, making it possible to compare costs and make significant savings in the design stages of metal structures Optimizes numerical applications and analyses various theoretical and industrial problems, such as belt-conveyor bridge, pipeline, wind turbine power, large-span suspended roof and offshore jacket member An invaluable aid for designers, students, researchers and manufacturers to find better, optimal, competitive structural solutions

Analysis and Optimum Design of Metal Structures

Analysis and Optimum Design of Metal Structures Book
Author : J Farkas,K. Jármai
Publisher : CRC Press
Release : 2020-12-18
ISBN : 1000150615
Language : En, Es, Fr & De

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Book Description :

Detailing a number of structural analysis problems such as residual welding stresses and distortions and behaviour of thin-walled rods loaded in bending, this text also explores mathematical function minimization methods, expert systems and optimum design of welded box beams.

Design Fabrication and Economy of Metal Structures

Design  Fabrication and Economy of Metal Structures Book
Author : Károly Jármai,József Farkas
Publisher : Springer Science & Business Media
Release : 2013-03-15
ISBN : 3642366910
Language : En, Es, Fr & De

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Book Description :

These are the proceedings of the International Conference on Design, Fabrication and Economy of Metal Structures held on 24-26 April 2013 in Miskolc, Hungary which contain 99 papers covering: Structural optimization Thin-walled structures Stability Fatigue Frames Fire Fabrication Welding technology Applications Steel-concrete composite Special problems The authors are from 23 different countries, ensuring that the themes covered are of worldwide interest and importance. The International Institute of Welding (IIW), the International Society of Structural and Multidisciplinary Optimization (ISSMO), the TÁMOP 4.2.1.B-10/2/KONV-2010-0001 project entitled “Increasing the quality of higher education through the development of research - development and innovation program at the University of Miskolc supported by the European Union, co-financed by the European Social Fund” and many other sponsors helped organizers to collect these valuable studies, the results of which will provoke discussion, and provide an important reference for civil and mechanical engineers, architects, researchers and structural designers and fabricators, as well as managers in a range of industries including building, transport, shipbuilding, aircraft, chemical and offshore engineering.

Optimum Design of Steel Structures

Optimum Design of Steel Structures Book
Author : József Farkas,Károly Jármai
Publisher : Springer Science & Business Media
Release : 2013-03-29
ISBN : 3642368689
Language : En, Es, Fr & De

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Book Description :

This book helps designers and manufacturers to select and develop the most suitable and competitive steel structures, which are safe, fit for production and economic. An optimum design system is used to find the best characteristics of structural models, which guarantee the fulfilment of design and fabrication requirements and minimize the cost function. Realistic numerical models are used as main components of industrial steel structures. Chapter 1 containts some experiences with the optimum design of steel structures Chapter 2 treats some newer mathematical optimization methods. Chapter 3 gives formulae for fabrication times and costs. Chapters 4 deals with beams and columns. Summarizes the Eurocode rules for design. Chapter 5 deals with the design of tubular trusses. Chapter 6 gives the design of frame structures and fire-resistant design rules for a frame. In Chapters 7 some minimum cost design problems of stiffened and cellular plates and shells are worked out for cases of different stiffenings and loads. Chapter 8 gives a cost comparison of cylindrical and conical shells. The book contains a large collection of literatures and a subject list and a name index.

High Performance and Optimum Design of Structures and Materials II

High Performance and Optimum Design of Structures and Materials II Book
Author : S. Hernández,C.A. Brebbia,W.P. De Wilde
Publisher : WIT Press
Release : 2016-11-28
ISBN : 1784661430
Language : En, Es, Fr & De

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Book Description :

Containing papers from the 2nd High Performance Design of Structures and Materials and the Optimum Design of Structures conference, following the success of a number of meetings since 1989, this book will be of interest to those in any engineering field. The use of novel materials and new structural concepts nowadays is not restricted to highly technical areas like aerospace, aeronautical applications or the automotive industry, but affects all engineering fields including those such as civil engineering and architecture. Most high performance structures require the development of a generation of new higher performance sustainable materials, which can more easily resist a range of external stimuli or react in a non-conventional manner. Emphasis is placed on intelligent structures and materials as well as the application of computational methods for their modelling, control and management. Optimisation problems of interest involve those related to size, shape and topology of structures and materials. Optimisation techniques have much to offer to those involved in the design of new industrial products. The development of new algorithms and the appearance of powerful commercial computer codes with easy to use graphical interfaces have created a fertile field for the incorporation of optimisation into the design process in all engineering disciplines. The book addresses the topic of design optimisation with welcomed contributions on numerical methods, different optimisation techniques and new software. Several of the topics covered are: Composite materials and structures; Material characterisation; Experiments and numerical analysis; Transformable structures; Environmentally friendly and sustainable structures; Evolutionary methods in optimisation; Aerospace structures; Biomechanics application and Pneumatic structures.

Coupled Instabilities in Metal Structures

Coupled Instabilities in Metal Structures Book
Author : Dinar Camotim,Dan Dubina,Jacques Rondal
Publisher : World Scientific
Release : 2000-08-21
ISBN : 1783261552
Language : En, Es, Fr & De

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Book Description :

The subject of coupled instabilities is a fascinating field of research with a wide range of practical applications, particularly in the analysis and design of metal structures. Despite the excellent body of existing results concerning coupled instability structural behaviour, this situation has not yet been adequately translated into design rules or specifications. In fact, only to a small extent do modern design codes for metal structures take advantage of the significant progress made in the field. This book, which contains all the invited general reports and selected papers presented at the Third International Conference on “Coupled Instabilities in Metal Structures” (CIMS '2000), should provide a meaningful contribution towards filling the gap between research and practice. Contents:Theoretical BackgroundsNumerical Simulation and Computational ModelsBar MembersExperimental TechniquesPlated StructuresShell StructuresFrames and Triangulated StructuresCoupled Instabilities Under Dynamic LoadingCoupled Instabilities in Nonlinear MaterialsOptimum Design CriteriaReliability and Progress in Design Codes Readership: Researchers, academics and graduate students in civil engineering and engineering mechanics. Keywords:Numerical Simulation;Experimental Techniques;Shell Structures;Coupled Instabilities

Optimization for Robot Modelling with MATLAB

Optimization for Robot Modelling with MATLAB Book
Author : Hazim Nasir Ghafil,Károly Jármai
Publisher : Springer Nature
Release : 2020-02-28
ISBN : 3030404102
Language : En, Es, Fr & De

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Book Description :

This book addresses optimization in robotics, in terms of both the configuration space and the metal structure of the robot arm itself; and discusses, describes and builds different types of heuristics and algorithms in MATLAB. In addition, the book includes a wealth of examples and exercises. In particular, it enables the reader to write a MATLAB code for all the related problems in robotics. The book also offers detailed descriptions of and builds from scratch several types of optimization algorithms using MATLAB and simplified methods, especially for inverse problems and avoiding singularities. Each chapter features examples and exercises to enhance the reader’s comprehension. Accordingly, the book offers the reader a better understanding of robot analysis from an optimization standpoint.

Design Fabrication and Economy of Welded Structures

Design  Fabrication and Economy of Welded Structures Book
Author : K Jarmai,J Farkas
Publisher : Elsevier
Release : 2008-04-01
ISBN : 1782420487
Language : En, Es, Fr & De

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Book Description :

These proceedings cover the fields of different materials and fatigue of welded joints, thin-walled structures, tubular structures, frames, plates and shells and also incorporate special optimization problems, fire and earthquake resistant design, special applications and applied mechanics, and thus provide an important reference for civil and mechanical engineers, architects, designers and fabricators. Proceedings cover the fields of different materials and fatigue of welded joints, thin-walled structures, tubular structures, frames, plates and shells Also incorporate special optimization problems, fire and earthquake resistant design, special applications and applied mechanics Provide an important reference for civil and mechanical engineers, architects, designers and fabricators

Elements of Structural Optimization

Elements of Structural Optimization Book
Author : Raphael T. Haftka,Zafer Gürdal
Publisher : Springer Science & Business Media
Release : 1991-11-30
ISBN : 9780792315049
Language : En, Es, Fr & De

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Book Description :

The field of structural optimization is still a relatively new field undergoing rapid changes in methods and focus. Until recently there was a severe imbalance between the enormous amount of literature on the subject, and the paucity of applications to practical design problems. This imbalance is being gradually redressed. There is still no shortage of new publications, but there are also exciting applications of the methods of structural optimizations in the automotive, aerospace, civil engineering, machine design and other engineering fields. As a result of the growing pace of applications, research into structural optimization methods is increasingly driven by real-life problems. t-.Jost engineers who design structures employ complex general-purpose software packages for structural analysis. Often they do not have any access to the source program, and even more frequently they have only scant knowledge of the details of the structural analysis algorithms used in this software packages. Therefore the major challenge faced by researchers in structural optimization is to develop methods that are suitable for use with such software packages. Another major challenge is the high computational cost associated with the analysis of many complex real-life problems. In many cases the engineer who has the task of designing a structure cannot afford to analyze it more than a handful of times.

Design Optimization of Compliant Structures for Radiofrequency Ablation and Additive Manufacturing

Design Optimization of Compliant Structures for Radiofrequency Ablation and Additive Manufacturing Book
Author : Bradley Wright Hanks
Publisher :
Release : 2020
ISBN :
Language : En, Es, Fr & De

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Book Description :

Recent advances in the capabilities of model simulation and manufacturing technology are paving the way for systematic design tools. These tools enable designers to explore organic and nonconventional designs that were previously not possible to analyze or manufacture. Through design optimization, these nonconventional designs may be used to maximize part performance in a variety of applications such as medical, aerospace, and defense industries. One sector of nonconventional designs that have been relatively unexplored is that of compliant mechanisms or tailored mechanical properties for metamaterial design. Compliant mechanisms are structures which gain motion through deflection or deformation of a material rather than traditional hinges or joints. Metamaterials gain their properties based their structure as opposed to material composition. Using material deformation to gain motion allows for generation of unique structures that reduce the wear commonly seen in hinges, remove the need for lubrication in harsh environments, reduce part count, and improve dexterity. While these advantages present unique opportunities in a variety of situations, it remains challenging to design and optimize these nonconventional structures. In this dissertation two systematic design optimization approaches are described for compliant structures: a shape matching approach for a deployable surgical tool for radiofrequency ablation (RFA) of tumors and generation of lattice structures for additive manufacturing (AM). Radiofrequency ablation is an increasing common minimally invasive treatment option for abdominal tumors. During the procedure, an electrode is inserted into the tumor and the surrounding tissue is heated. To effectively destroy a tumor with RFA, it is critical that the shape of the treatment match the shape of the tumor with a small margin around the periphery. The shape of the treatment, or ablation zone, is largely dependent on the shape of the electrode. To improve treatment for endoscopic RFA of tumors, a novel compliant deployable RFA electrode is presented along with a systematic design optimization approach for shape matching the treatment zone and tumor. The optimization approach includes a finite element model of RFA coupled with a genetic algorithm, an approach that may be applied to tumors throughout the abdomen and mediastinum. A specific example of the approach is demonstrated through pancreatic tumor ablation. The results of the approach show treatment efficiency is increased from 25% to 87% for a 2.5cm spherical tumor. In addition, experimental validation of the finite element RFA model is reported. With the recent advances in AM, systematic design optimization approaches are needed for generating structures which take advantage of the design freedom available. With the added design freedom, lattice structures, which consist of a repeating unit cell topology patterned throughout a structure, may be used to reduce weight or increase functionality while maintaining part performance. For AM, nearly infinite possibilities are available for the unit cell topology that will populate the lattice structure. However, there is a lack of fundamental understanding of unit cell topology selection. As a result, lattice structures are used without full consideration for how the lattice structure changes the properties of the part. For development of tailored compliance, this dissertation presents a design for AM (DfAM) systematic design optimization approach for generating manufacturable and customized unit cell topologies. Using a ground structure topology optimization (GSTO) approach, novel unit cell topologies may be generated to meet application specific needs. By incorporating a library of unique optimization objectives, constraints, and penalties, Additive Lattice Topology Optimization (ALTO) is an application-agnostic approach to unit cell design, demonstrated through various case studies for unique lattice structure applications. Two case studies are presented for multi-functional lattices that combine minimization of strain energy and maximization of thermal conductance. The results show how DfAM considerations can be included in the optimization to improve manufacturability and are demonstrated with printed examples of the optimized solution. In addition, these multi-functional lattices highlight the importance of multi-objective optimization and its ability to generate a Pareto-optimal set of solutions. Three other case studies are presented for optimizing structures that match a target constitutive matrix. The first of these three demonstrates a novel powder removability factor to generate a unit cell topology that has the same orthogonal effective elastic moduli as a baseline unit cell topology. The optimized solution shows improved powder removal compared to the baseline unit cell through mass measurement, CT scan analysis, and tortuosity quantification. Experimental compression testing of both the optimized and baseline unit cell topologies validate the predicted results within 6%. The second of these case studies uses optimization to design three novel unit cell topologies that utilize mechanism-like behavior to reduce stiffness without reducing weight. This enables lattice structures with a non-uniform stiffness while maintaining a uniform weight distribution. The third case study demonstrates generation of an orthotropic unit cell topology, with three times the effective modulus in one direction as compared another. As an additional part of this work, a compilation of data from analytical models, experimental characterization, and finite-element analysis of lattice structures has resulted in the largest public database of mechanical property information for metal lattice structures fabricated with AM. The Lattice Unit-cell Characterization Interface for Engineers (LUCIE) offers Ashby-style plots for unit cell topology trends in mechanical properties. It represents a compilation of 69 sources, resulting in 1400 experimental data points, 200+ finite element points, and 45+ analytical models for a total of 18 different unit cell topologies. The culmination of this work presents research contributions for novel design optimization approaches for RFA of tumors and DfAM of metal lattice structures through numerous case studies and experimental validation.

Mechanics of Optimal Structural Design

Mechanics of Optimal Structural Design Book
Author : David W. A. Rees
Publisher : John Wiley & Sons
Release : 2009-12-21
ISBN : 9780470747810
Language : En, Es, Fr & De

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Book Description :

In a global climate where engineers are increasingly under pressure to make the most of limited resources, there are huge potential financial and environmental benefits to be gained by designing for minimum weight. With Mechanics of Optimal Structural Design, David Rees brings the original approach of weight optimization to the existing structural design literature, providing a methodology for attaining minimum weight of a range of structures under their working loads. He addresses the current gap in education between formal structural design teaching at undergraduate level and the practical application of this knowledge in industry, describing the analytical techniques that students need to understand before applying computational techniques that can be easy to misuse without this grounding. Shows engineers how to approach structural design for minimum weight in clear, concise terms Contains many new least-weight design techniques, taking into consideration different manners of loading and including new topics that have not previously been considered within the least-weight theme Considers the demands for least-weight road, air and space vehicles for the future Enhanced by illustrative worked examples to enlighten the theory, exercises at the end of each chapter that enable application of the theory covered, and an accompanying website with worked examples and solutions housed at www.wiley.com/go/rees The least-weight analyses of basic structural elements ensure a spread of interest with many applications in mechanical, civil, aircraft and automobile engineering. Consequently, this book fills the gap between the basic material taught at undergraduate level and other approaches to optimum design, for example computer simulations and the finite element method.

Manufacturing Integrated Design

Manufacturing Integrated Design Book
Author : Peter Groche,Enrico Bruder,Sebastian Gramlich
Publisher : Springer
Release : 2017-04-20
ISBN : 3319523775
Language : En, Es, Fr & De

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Book Description :

The book gives a systematic and detailed description of a new integrated product and process development approach for sheet metal manufacturing. Special attention is given to manufacturing that unites multidisciplinary competences of product design, material science, and production engineering, as well as mathematical optimization and computer based information technology. The case study of integral sheet metal structures is used by the authors to introduce the results related to the recent manufacturing technologies of linear flow splitting, bend splitting, and corresponding integrated process chains for sheet metal structures.

IUTAM Symposium on Topological Design Optimization of Structures Machines and Materials

IUTAM Symposium on Topological Design Optimization of Structures  Machines and Materials Book
Author : Martin Philip Bendsoe,Niels Olhoff,Ole Sigmund
Publisher : Springer Science & Business Media
Release : 2006-10-03
ISBN : 1402047525
Language : En, Es, Fr & De

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Book Description :

This volume offers edited papers presented at the IUTAM-Symposium Topological design optimization of structures, machines and materials - status and perspectives, October 2005. The papers cover the application of topological design optimization to fluid-solid interaction problems, acoustics problems, and to problems in biomechanics, as well as to other multiphysics problems. Also in focus are new basic modelling paradigms, covering new geometry modelling such as level-set methods and topological derivatives.

Advances in Structural and Multidisciplinary Optimization

Advances in Structural and Multidisciplinary Optimization Book
Author : Axel Schumacher,Thomas Vietor,Sierk Fiebig,Kai-Uwe Bletzinger,Kurt Maute
Publisher : Springer
Release : 2017-12-04
ISBN : 3319679880
Language : En, Es, Fr & De

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Book Description :

The volume includes papers from the WSCMO conference in Braunschweig 2017 presenting research of all aspects of the optimal design of structures as well as multidisciplinary design optimization where the involved disciplines deal with the analysis of solids, fluids or other field problems. Also presented are practical applications of optimization methods and the corresponding software development in all branches of technology.

Reliability based Structural Design

Reliability based Structural Design Book
Author : Seung-Kyum Choi,Ramana Grandhi,Robert A. Canfield
Publisher : Springer Science & Business Media
Release : 2006-11-15
ISBN : 1846284457
Language : En, Es, Fr & De

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Book Description :

This book provides readers with an understanding of the fundamentals and applications of structural reliability, stochastic finite element method, reliability analysis via stochastic expansion, and optimization under uncertainty. It examines the use of stochastic expansions, including polynomial chaos expansion and Karhunen-Loeve expansion for the reliability analysis of practical engineering problems.

Design and Optimization of Mechanical Engineering Products

Design and Optimization of Mechanical Engineering Products Book
Author : Kumar, K.,Davim, J. Paulo
Publisher : IGI Global
Release : 2018-02-02
ISBN : 1522534024
Language : En, Es, Fr & De

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Book Description :

The success of any product sold to consumers is based, largely, on the longevity of the product. This concept can be extended by various methods of improvement including optimizing the initial creation structures which can lead to a more desired product and extend the product's time on the market. Design and Optimization of Mechanical Engineering Products is an essential research source that explores the structure and processes used in creating goods and the methods by which these goods are improved in order to continue competitiveness in the consumer market. Featuring coverage on a broad range of topics including modeling and simulation, new product development, and multi-criteria decision making, this publication is targeted toward students, practitioners, researchers, engineers, and academicians.

Metal Building Contracting and Construction

Metal Building Contracting and Construction Book
Author : W. D. Booth
Publisher : McGraw Hill Professional
Release : 1999
ISBN : 9780070069640
Language : En, Es, Fr & De

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Book Description :

Build a lucrative metal contracting and construction business This book gives you an in-depth understanding of the marketplace for metal buildings and the materials used. You get step-by-step building methods and procedures...develop design-build skills...and see how to handle maintenance and repair work. Packed with illustrative examples, plans and photographs, this how-to resource gives you tools to: Maximize the advantages of metal buildings--including low cost, flexibility, and fast construction Locate and qualify a prospective owner Master the various strategies for selling the prospect Perform inspections...seismic upgrades and fire damage renovations Much more