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Propagation Dincertitudes Dans Les Modeles Elements Finis En Electromagnetisme
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Book Synopsis Propagation d'incertitudes dans les modèles éléments finis en électromagnétisme by : Karim Beddek
Download or read book Propagation d'incertitudes dans les modèles éléments finis en électromagnétisme written by Karim Beddek and published by . This book was released on 2012 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: La quantification d’incertitudes est une démarche consistant à prendre en compte les incertitudes des coefficients caractéristiques (matériaux, géométries, sources ...) d’un modèle mathématique en vue d’estimer l’effet de ces méconnaissances sur les grandeurs physiques recherchées. Dans ce travail de thèse, nous nous sommes intéressés aux approches probabilistes de propagation d’incertitudes portées par les lois de comportement (perméabilités et conductivités) aux sein de modèles éléments finis de l’électromagnétisme quasi-statique de taille industrielle. Cette thèse vise à comparer les deux approches spectrales NISP et SSFEM qui sont basées sur une représentation fonctionnelle dans le chaos polynomial des grandeurs d’intérêt aléatoires. Cette étude de comparaison est effectuée en terme de précision numérique et de coût de calcul, et pour des grandeurs d’intérêt scalaires et vectorielles complexes. Les applications numériques nous ont montré que la SSFEM peut être assez compétitive par rapport à la NISP pour des problèmes probabilistes à grandes dimensions stochastiques. Il en résulte que celle-ci est la méthode de prédilection pour l’étude des systèmes électromagnétiques dont les lois de comportement des matériaux sont aléatoires. Enfin, les deux méthodes spectrales ont été appliquées sur un problème de détection de bouchage par la magnétite des plaques entretoises des générateurs de vapeur d’une centrale nucléaire. Dans cette étude probabiliste, nous nous sommes attelés à quantifier la contribution des incertitudes, subsistant dans les conductivités et perméabilités de la magnétite et de la plaque, à la variabilité des signaux et du ratio SAX.
Book Synopsis Construction Reliability by : Julien Baroth
Download or read book Construction Reliability written by Julien Baroth and published by John Wiley & Sons. This book was released on 2013-02-07 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides answers to the following problems: how to identify the most probable critical failures; how to describe and use data-concerning materials that are either heterogeneous, time-variant, or space-variant; how to quantify the reliability and lifetime of a system; how to use feedback information to actualize reliability results; and how to optimize an inspection politic or a maintenance strategy. Numerous authors from public research centers and firms propose a synthesis of methods, both new and well-known, and offer numerous examples concerning dams, geotechnical study, and structures from nuclear and civil engineering.
Book Synopsis Reliability-Based Design in Geotechnical Engineering by : Kok-Kwang Phoon
Download or read book Reliability-Based Design in Geotechnical Engineering written by Kok-Kwang Phoon and published by CRC Press. This book was released on 2008-04-21 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reliability-based design is the only engineering methodology currently available which can ensure self-consistency in both physical and probabilistic terms. It is also uniquely compatible with the theoretical basis underlying other disciplines such as structural design. It is especially relevant as geotechnical design becomes subject to incre
Book Synopsis Computational Stochastic Mechanics by : P.D. Spanos
Download or read book Computational Stochastic Mechanics written by P.D. Spanos and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 886 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over a period of several years the field of probabilistic mechanics and com putational mechanics have progressed vigorously, but independently. With the advent of powerful computational hardware and the development of novel mechanical techniques, the field of stochastic mechanics has progressed in such a manner that the inherent uncertainty of quite complicated systems can be addressed. The first International Conference on Computational Stochastic Mechanics was convened in Corfu in September 1991 in an ef fort to provide a forum for the exchanging of ideas on the current status of computational methods as applied to stochastic mechanics and for identi fying needs for further research. The Conference covered both theoretical techniques and practical applications. The Conference also celebrated the 60th anniversary of the birthday of Dr. Masanobu Shinozuka, the Sollenberger Professor of Civil Engineering at Princeton University, whose work has contributed in such a great measure to the development of Computational Stochastic Mechanics. A brief sum mary of his career and achievements are given in the Dedication. This book comprises some of the papers presented at the meeting and cov ers sections on Theoretical Reliability Analysis; Damage Analysis; Applied Reliability Analysis; Theoretical Random Vibrations; Stochastic Finite Ele ment Concept; Fatigue and Fracture; Monte Carlo Simulations; Earthquake Engineering Applications; Materials; Applied Random Vibrations; Applied Stochastic Finite Element Analysis, and Flow Related Applications and Chaotic Dynamics. The Editors hope that the book will be a valuable contribution to the grow ing literature covering the field of Computational Stochastic Mechanics.
Book Synopsis 18th International Probabilistic Workshop by : José C. Matos
Download or read book 18th International Probabilistic Workshop written by José C. Matos and published by Springer Nature. This book was released on 2021-05-07 with total page 855 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents the proceedings of the 18th International Probabilistic Workshop (IPW), which was held in Guimarães, Portugal in May 2021. Probabilistic methods are currently of crucial importance for research and developments in the field of engineering, which face challenges presented by new materials and technologies and rapidly changing societal needs and values. Contemporary needs related to, for example, performance-based design, service-life design, life-cycle analysis, product optimization, assessment of existing structures and structural robustness give rise to new developments as well as accurate and practically applicable probabilistic and statistical engineering methods to support these developments. These proceedings are a valuable resource for anyone interested in contemporary developments in the field of probabilistic engineering applications.
Book Synopsis Reliability and Optimization of Structural Systems by : Daniel Straub
Download or read book Reliability and Optimization of Structural Systems written by Daniel Straub and published by CRC Press. This book was released on 2010-07-28 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains 28 papers by renowned international experts on the latest advances in structural reliability methods and applications, engineering risk analysis and decision making, new optimization techniques and various applications in civil engineering. Moreover, several contributions focus on the assessment and optimization of existing str
Book Synopsis Reliability and Optimization of Structural Systems: Assessment, Design, and Life-Cycle Performance by : Dan M. Frangopol
Download or read book Reliability and Optimization of Structural Systems: Assessment, Design, and Life-Cycle Performance written by Dan M. Frangopol and published by CRC Press. This book was released on 2007-10-18 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focussing on structural reliability methods, reliability-based optimization, structural system reliability and risk analysis, lifetime performance and various applications in civil engineering. Invaluable to all concerned with structural system reliability and optimization, especially students, engineers, and workers in research and development.
