Uncertainty And Optimization In Structural Mechanics

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Uncertainty and Optimization in Structural Mechanics

Abdelkhalak El Hami,Bouchaib Radi
Uncertainty and Optimization in Structural Mechanics Book PDF

Author : Abdelkhalak El Hami,Bouchaib Radi
Publisher : John Wiley & Sons
Page : 149 pages
File Size : 52,6 Mb
Release : 2013-04-08
Category : Technology & Engineering
ISBN : 9781118711835

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Uncertainty and Optimization in Structural Mechanics by Abdelkhalak El Hami,Bouchaib Radi Pdf

Optimization is generally a reduction operation of a definite quantity. This process naturally takes place in our environment and through our activities. For example, many natural systems evolve, in order to minimize their potential energy. Modeling these phenomena then largely relies on our capacity to artificially reproduce these processes. In parallel, optimization problems have quickly emerged from human activities, notably from economic concerns. This book includes the most recent ideas coming from research and industry in the field of optimization, reliability and the recognition of accompanying uncertainties. It is made up of eight chapters which look at the reviewing of uncertainty tools, system reliability, optimal design of structures and their optimization (of sizing, form, topology and multi-objectives) – along with their robustness and issues on optimal safety factors. Optimization reliability coupling will also be tackled in order to take into account the uncertainties in the modeling and resolution of the problems encountered. The book is aimed at students, lecturers, engineers, PhD students and researchers. Contents 1. Uncertainty. 2. Reliability in Mechanical Systems. 3. Optimal Structural Design. 4. Multi-object Optimization with Uncertainty. 5. Robust Optimization. 6. Reliability Optimization. 7. Optimal Security Factors Approach. 8. Reliability-based Topology Optimization. About the Authors Abdelkhalak El Hami is Professor at the Institut National des Sciences Appliquées, Rouen, France. He is the author of many articles and books on optimization and uncertainty. Bouchaib Radi is Professor in the Faculty of Sciences and Technology at the University of Hassan Premier, Settat, Morocco. His research interests are in such areas as structural optimization, parallel computation, contact problem and metal forming. He is the author of many scientific articles and books.

Uncertainty and Optimization in Structural Mechanics

Abdelkhalak El Hami,Bouchaib Radi
Uncertainty and Optimization in Structural Mechanics Book PDF

Author : Abdelkhalak El Hami,Bouchaib Radi
Publisher : John Wiley & Sons
Page : 149 pages
File Size : 49,9 Mb
Release : 2013-03-11
Category : Technology & Engineering
ISBN : 9781848215177

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Uncertainty and Optimization in Structural Mechanics by Abdelkhalak El Hami,Bouchaib Radi Pdf

Optimization is generally a reduction operation of a definite quantity. This process naturally takes place in our environment and through our activities. For example, many natural systems evolve, in order to minimize their potential energy. Modeling these phenomena then largely relies on our capacity to artificially reproduce these processes. In parallel, optimization problems have quickly emerged from human activities, notably from economic concerns. This book includes the most recent ideas coming from research and industry in the field of optimization, reliability and the recognition of accompanying uncertainties. It is made up of eight chapters which look at the reviewing of uncertainty tools, system reliability, optimal design of structures and their optimization (of sizing, form, topology and multi-objectives) – along with their robustness and issues on optimal safety factors. Optimization reliability coupling will also be tackled in order to take into account the uncertainties in the modeling and resolution of the problems encountered. The book is aimed at students, lecturers, engineers, PhD students and researchers. Contents 1. Uncertainty. 2. Reliability in Mechanical Systems. 3. Optimal Structural Design. 4. Multi-object Optimization with Uncertainty. 5. Robust Optimization. 6. Reliability Optimization. 7. Optimal Security Factors Approach. 8. Reliability-based Topology Optimization. About the Authors Abdelkhalak El Hami is Professor at the Institut National des Sciences Appliquées, Rouen, France. He is the author of many articles and books on optimization and uncertainty. Bouchaib Radi is Professor in the Faculty of Sciences and Technology at the University of Hassan Premier, Settat, Morocco. His research interests are in such areas as structural optimization, parallel computation, contact problem and metal forming. He is the author of many scientific articles and books.

Structural Design Optimization Considering Uncertainties

Yannis Tsompanakis,Nikos D. Lagaros,Manolis Papadrakakis
Structural Design Optimization Considering Uncertainties Book PDF

Author : Yannis Tsompanakis,Nikos D. Lagaros,Manolis Papadrakakis
Publisher : Taylor & Francis
Page : 669 pages
File Size : 42,6 Mb
Release : 2008-02-07
Category : Technology & Engineering
ISBN : 9781134055067

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Structural Design Optimization Considering Uncertainties by Yannis Tsompanakis,Nikos D. Lagaros,Manolis Papadrakakis Pdf

Uncertainties play a dominant role in the design and optimization of structures and infrastructures. In optimum design of structural systems due to variations of the material, manufacturing variations, variations of the external loads and modelling uncertainty, the parameters of a structure, a structural system and its environment are not given, fixed coefficients, but random variables with a certain probability distribution. The increasing necessity to solve complex problems in Structural Optimization, Structural Reliability and Probabilistic Mechanics, requires the development of new ideas, innovative methods and numerical tools for providing accurate numerical solutions in affordable computing times. This book presents the latest findings on structural optimization considering uncertainties. It contains selected contributions dealing with the use of probabilistic methods for the optimal design of different types of structures and various considerations of uncertainties. The first part is focused on reliability-based design optimization and the second part on robust design optimization. Comprising twenty-one, self-contained chapters by prominent authors in the field, it forms a complete collection of state-of-the-art theoretical advances and applications in the fields of structural optimization, structural reliability, and probabilistic computational mechanics. It is recommended to researchers, engineers, and students in civil, mechanical, naval and aerospace engineering and to professionals working on complicated costs-effective design problems.

Optimization and Anti-optimization of Structures Under Uncertainty

Isaac Elishakoff,Makoto Ohsaki
Optimization and Anti optimization of Structures Under Uncertainty Book PDF

Author : Isaac Elishakoff,Makoto Ohsaki
Publisher : World Scientific
Page : 425 pages
File Size : 46,9 Mb
Release : 2010
Category : Mathematics
ISBN : 9781848164789

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Optimization and Anti-optimization of Structures Under Uncertainty by Isaac Elishakoff,Makoto Ohsaki Pdf

The volume presents a collaboration between internationally recognized experts on anti-optimization and structural optimization, and summarizes various novel ideas, methodologies and results studied over 20 years. The book vividly demonstrates how the concept of uncertainty should be incorporated in a rigorous manner during the process of designing real-world structures. The necessity of anti-optimization approach is first demonstrated, then the anti-optimization techniques are applied to static, dynamic and buckling problems, thus covering the broadest possible set of applications. Finally, anti-optimization is fully utilized by a combination of structural optimization to produce the optimal design considering the worst-case scenario. This is currently the only book that covers the combination of optimization and anti-optimization. It shows how various optimization techniques are used in the novel anti-optimization technique, and how the structural optimization can be exponentially enhanced by incorporating the concept of worst-case scenario, thereby increasing the safety of the structures designed in various fields of engineering.

Structural Design Optimization Considering Uncertainties

Yannis Tsompanakis,Nikos D. Lagaros,Manolis Papadrakakis
Structural Design Optimization Considering Uncertainties Book PDF

Author : Yannis Tsompanakis,Nikos D. Lagaros,Manolis Papadrakakis
Publisher : CRC Press
Page : 670 pages
File Size : 55,7 Mb
Release : 2008-02-07
Category : Technology & Engineering
ISBN : 9780203938522

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Structural Design Optimization Considering Uncertainties by Yannis Tsompanakis,Nikos D. Lagaros,Manolis Papadrakakis Pdf

Uncertainties play a dominant role in the design and optimization of structures and infrastructures. In optimum design of structural systems due to variations of the material, manufacturing variations, variations of the external loads and modelling uncertainty, the parameters of a structure, a structural system and its environment are not given, fi

Optimization and Anti-Optimization of Structures Under Uncertainty

Isaac Elishakoff,Makoto Ohsaki
Optimization and Anti Optimization of Structures Under Uncertainty Book PDF

Author : Isaac Elishakoff,Makoto Ohsaki
Publisher : World Scientific
Page : 424 pages
File Size : 48,6 Mb
Release : 2010-03-08
Category : Technology & Engineering
ISBN : 9781908978189

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Optimization and Anti-Optimization of Structures Under Uncertainty by Isaac Elishakoff,Makoto Ohsaki Pdf

The volume presents a collaboration between internationally recognized experts on anti-optimization and structural optimization, and summarizes various novel ideas, methodologies and results studied over 20 years. The book vividly demonstrates how the concept of uncertainty should be incorporated in a rigorous manner during the process of designing real-world structures. The necessity of anti-optimization approach is first demonstrated, then the anti-optimization techniques are applied to static, dynamic and buckling problems, thus covering the broadest possible set of applications. Finally, anti-optimization is fully utilized by a combination of structural optimization to produce the optimal design considering the worst-case scenario. This is currently the only book that covers the combination of optimization and anti-optimization. It shows how various optimization techniques are used in the novel anti-optimization technique, and how the structural optimization can be exponentially enhanced by incorporating the concept of worst-case scenario, thereby increasing the safety of the structures designed in various fields of engineering. Contents:Optimization or Making the Best in the Presence of Certainty/UncertaintyGeneral Formulation of Anti-OptimizationAnti-Optimization in Static ProblemsAnti-Optimization in BucklingAnti-Optimization in VibrationAnti-Optimization via FEM-Based Interval AnalysisAnti-Optimization and Probabilistic DesignHybrid Optimization with Anti-Optimization under Uncertainty or Making the Best Out of the Worst Readership: Graduate students, professionals and academics in the field of mechanical engineering. Keywords:Anti-Optimization;Structural Optimization;Convex Model;Worst-Case Scenario;Ellipsoidal Model;Worst Excitation;Worst Imperfection;Homology Design;Interval AnalysisKey Features:This is the first book on optimization and anti-optimization Tackles two of the most important facets of engineering — safety and optimality — in a unified manner; the book may prove to be a turning point in both optimization and uncertainty studies by the suggested hybrid treatmentReviews:“Many applications to the optimal structural design are presented. Since some of the criteria are based on worst case scenarios, nested or two-stage optimization problems have to be considered. The book contains many examples and a large number of references.”Zentralblatt MATH

Topology Optimization in Structural and Continuum Mechanics

George I. N. Rozvany,Tomasz Lewinski
Topology Optimization in Structural and Continuum Mechanics Book PDF

Author : George I. N. Rozvany,Tomasz Lewinski
Publisher : Springer Science & Business Media
Page : 471 pages
File Size : 46,6 Mb
Release : 2013-09-20
Category : Science
ISBN : 9783709116432

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Topology Optimization in Structural and Continuum Mechanics by George I. N. Rozvany,Tomasz Lewinski Pdf

The book covers new developments in structural topology optimization. Basic features and limitations of Michell’s truss theory, its extension to a broader class of support conditions, generalizations of truss topology optimization, and Michell continua are reviewed. For elastic bodies, the layout problems in linear elasticity are discussed and the method of relaxation by homogenization is outlined. The classical problem of free material design is shown to be reducible to a locking material problem, even in the multiload case. For structures subjected to dynamic loads, it is explained how they can be designed so that the structural eigenfrequencies of vibration are as far away as possible from a prescribed external excitation frequency (or a band of excitation frequencies) in order to avoid resonance phenomena with high vibration and noise levels. For diffusive and convective transport processes and multiphysics problems, applications of the density method are discussed. In order to take uncertainty in material parameters, geometry, and operating conditions into account, techniques of reliability-based design optimization are introduced and reviewed for their applicability to topology optimization.

Modern Trends in Structural and Solid Mechanics 3

Noel Challamel,Julius Kaplunov,Izuru Takewaki
Modern Trends in Structural and Solid Mechanics 3 Book PDF

Author : Noel Challamel,Julius Kaplunov,Izuru Takewaki
Publisher : John Wiley & Sons
Page : 306 pages
File Size : 52,7 Mb
Release : 2021-06-02
Category : Science
ISBN : 9781119831815

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Modern Trends in Structural and Solid Mechanics 3 by Noel Challamel,Julius Kaplunov,Izuru Takewaki Pdf

This book comprised of three separate volumes presents the recent developments and research discoveries in structural and solid mechanics; it is dedicated to Professor Isaac Elishakoff. This third volume is devoted to non-deterministic mechanics. Modern Trends in Structural and Solid Mechanics 3 has broad scope, covering topics such: design optimization under uncertainty, interval field approaches, convex analysis, quantum inspired topology optimization and stochastic dynamics. The book is illustrated by many applications in the field of aerospace engineering, mechanical engineering, civil engineering, biomedical engineering and automotive engineering. This book is intended for graduate students and researchers in the field of theoretical and applied mechanics.

Structural Design Optimization Considering Uncertainties

Yannis Tsompanakis,Nikos D. Lagaros,Manolis Papadrakakis
Structural Design Optimization Considering Uncertainties Book PDF

Author : Yannis Tsompanakis,Nikos D. Lagaros,Manolis Papadrakakis
Publisher : CRC Press
Page : 656 pages
File Size : 55,5 Mb
Release : 2008-02-07
Category : Technology & Engineering
ISBN : 113405503X

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Structural Design Optimization Considering Uncertainties by Yannis Tsompanakis,Nikos D. Lagaros,Manolis Papadrakakis Pdf

Uncertainties play a dominant role in the design and optimization of structures and infrastructures. In optimum design of structural systems due to variations of the material, manufacturing variations, variations of the external loads and modelling uncertainty, the parameters of a structure, a structural system and its environment are not given, fixed coefficients, but random variables with a certain probability distribution. The increasing necessity to solve complex problems in Structural Optimization, Structural Reliability and Probabilistic Mechanics, requires the development of new ideas, innovative methods and numerical tools for providing accurate numerical solutions in affordable computing times. This book presents the latest findings on structural optimization considering uncertainties. It contains selected contributions dealing with the use of probabilistic methods for the optimal design of different types of structures and various considerations of uncertainties. The first part is focused on reliability-based design optimization and the second part on robust design optimization. Comprising twenty-one, self-contained chapters by prominent authors in the field, it forms a complete collection of state-of-the-art theoretical advances and applications in the fields of structural optimization, structural reliability, and probabilistic computational mechanics. It is recommended to researchers, engineers, and students in civil, mechanical, naval and aerospace engineering and to professionals working on complicated costs-effective design problems.

Fluid-Structure Interactions and Uncertainties

Abdelkhalak El Hami,Bouchaib Radi
Fluid Structure Interactions and Uncertainties Book PDF

Author : Abdelkhalak El Hami,Bouchaib Radi
Publisher : John Wiley & Sons
Page : 240 pages
File Size : 40,8 Mb
Release : 2017-02-07
Category : Science
ISBN : 9781119388913

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Fluid-Structure Interactions and Uncertainties by Abdelkhalak El Hami,Bouchaib Radi Pdf

This book is dedicated to the general study of fluid structure interaction with consideration of uncertainties. The fluid-structure interaction is the study of the behavior of a solid in contact with a fluid, the response can be strongly affected by the action of the fluid. These phenomena are common and are sometimes the cause of the operation of certain systems, or otherwise manifest malfunction. The vibrations affect the integrity of structures and must be predicted to prevent accelerated wear of the system by material fatigue or even its destruction when the vibrations exceed a certain threshold.

Non-local Structural Mechanics

Danilo Karlicic,Tony Murmu,Sondipon Adhikari,Michael McCarthy
Non local Structural Mechanics Book PDF

Author : Danilo Karlicic,Tony Murmu,Sondipon Adhikari,Michael McCarthy
Publisher : John Wiley & Sons
Page : 372 pages
File Size : 42,8 Mb
Release : 2016-01-26
Category : Technology & Engineering
ISBN : 9781848215221

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Non-local Structural Mechanics by Danilo Karlicic,Tony Murmu,Sondipon Adhikari,Michael McCarthy Pdf

Serving as a review on non-local mechanics, this book provides an introduction to non-local elasticity theory for static, dynamic and stability analysis in a wide range of nanostructures. The authors draw on their own research experience to present fundamental and complex theories that are relevant across a wide range of nanomechanical systems, from the fundamentals of non-local mechanics to the latest research applications.

Structural Sensitivity Analysis and Optimization 1

Kyung K. Choi,Nam-Ho Kim
Structural Sensitivity Analysis and Optimization 1 Book PDF

Author : Kyung K. Choi,Nam-Ho Kim
Publisher : Springer Science & Business Media
Page : 457 pages
File Size : 41,9 Mb
Release : 2006-12-30
Category : Science
ISBN : 9780387271699

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Structural Sensitivity Analysis and Optimization 1 by Kyung K. Choi,Nam-Ho Kim Pdf

Extensive numerical methods for computing design sensitivity are included in the text for practical application and software development. The numerical method allows integration of CAD-FEA-DSA software tools, so that design optimization can be carried out using CAD geometric models instead of FEA models. This capability allows integration of CAD-CAE-CAM so that optimized designs can be manufactured effectively.

Structural Sensitivity Analysis and Optimization 2

K. K. Choi,Nam-Ho Kim
Structural Sensitivity Analysis and Optimization 2 Book PDF

Author : K. K. Choi,Nam-Ho Kim
Publisher : Springer Science & Business Media
Page : 336 pages
File Size : 50,7 Mb
Release : 2006-12-22
Category : Science
ISBN : 9780387273068

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Structural Sensitivity Analysis and Optimization 2 by K. K. Choi,Nam-Ho Kim Pdf

Extensive numerical methods for computing design sensitivity are included in the text for practical application and software development. The numerical method allows integration of CAD-FEA-DSA software tools, so that design optimization can be carried out using CAD geometric models instead of FEA models. This capability allows integration of CAD-CAE-CAM so that optimized designs can be manufactured effectively.

Uncertainty Assessment of Large Finite Element Systems

Christian A. Schenk,Gerhart I. Schuëller
Uncertainty Assessment of Large Finite Element Systems Book PDF

Author : Christian A. Schenk,Gerhart I. Schuëller
Publisher : Springer Science & Business Media
Page : 184 pages
File Size : 54,9 Mb
Release : 2005-06-08
Category : Technology & Engineering
ISBN : 3540253432

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Uncertainty Assessment of Large Finite Element Systems by Christian A. Schenk,Gerhart I. Schuëller Pdf

The treatment of uncertainties in the analysis of engineering structures remains one of the premium challenges in modern structural mechanics. It is only in recent years that the developments in stochastic and deterministic computational mechanics began to be synchronized. To foster these developments, novel computational procedures for the uncertainty assessment of large finite element systems are presented in this monograph. The stochastic input is modeled by the so-called Karhunen-Loève expansion, which is formulated in this context both for scalar and vector stochastic processes as well as for random fields. Particularly for strongly non-linear structures and systems the direct Monte Carlo simulation technique has proven to be most advantageous as method of solution. The capabilities of the developed procedures are demonstrated by showing some practical applications.

Philosophies of Structural Safety and Reliability

Vladimir Raizer,Isaac Elishakoff
Philosophies of Structural Safety and Reliability Book PDF

Author : Vladimir Raizer,Isaac Elishakoff
Publisher : CRC Press
Page : 266 pages
File Size : 55,8 Mb
Release : 2022-07-28
Category : Technology & Engineering
ISBN : 9781000550740

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Philosophies of Structural Safety and Reliability by Vladimir Raizer,Isaac Elishakoff Pdf

Uncertainty is certain to be found in structural engineering, making it crucial to structure design. This book covers three competing philosophies behind structural safety and reliability: probabilistic analysis, fuzzy set-based treatments, and the convex approach. Explaining the theory behind probabilistic analysis, fuzzy set-based treatments, and the convex approach in detail, alongside their implementation, use, and benefits, the book compares and contrasts these methods, enabling the reader to solve problems associated with uncertainty. These uncertainty issues can be seen in civil engineering structures, risk of earthquakes, impact of rough seas on ships, and turbulence affecting aerospace vehicles. Building on the authors’ many years of experience in the field, Philosophies of Structural Safety and Reliability is an essential guide to structural uncertainty. Topics covered in the book include properties of materials and their structural deterioration, safety factor and reliability, risk evaluation and loads, and their combinations. This book will be of interest to students and professionals in the fields of aerospace, civil, mechanical, marine, and ocean engineering.