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Simulation Du Comportement Thermique 3d Transitoire Dun Systeme De Freinage A Disque
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Book Synopsis SIMULATION DU COMPORTEMENT THERMIQUE 3D TRANSITOIRE D'UN SYSTEME DE FREINAGE A DISQUE by : ABDELTIF EL.. GOURARI
Download or read book SIMULATION DU COMPORTEMENT THERMIQUE 3D TRANSITOIRE D'UN SYSTEME DE FREINAGE A DISQUE written by ABDELTIF EL.. GOURARI and published by . This book was released on 1996 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: APRES UNE ETUDE ET UNE CRITIQUE DES PRINCIPALES METHODES UTILISEES EN THERMIQUE, UNE METHODE ORIGINALE HYBRIDE A ETE DEVELOPPEE POUR SIMULER LE COMPORTEMENT THERMIQUE 3D TRANSITOIRE D'UN SYSTEME DE FREINAGE A DISQUE. LE PRINCIPE DE CETTE METHODE REPOSE SUR L'EMPLOI SIMULTANE DE LA TRANSFORMATION INTEGRALE DE FOURIER ET DE LA METHODE DES ELEMENTS FINIS 2D, POUR TRAITER LE DISQUE DE FREIN, ET LA METHODE DES ELEMENTS FINIS 3D POUR TRAITER LES PIECES FIXES FROTTANTES SUR LE DISQUE DE FREIN. LES PERFORMANCES DE CETTE METHODE ORIGINALE SONT NETTEMENT SUPERIEURES A CELLES DE LA METHODE DES ELEMENTS FINIS, NOTAMMENT AU NIVEAU DU TEMPS DE CALCUL. POUR PERMETTRE UNE EXPLOITATION INDUSTRIELLE EFFICACE DE LA METHODE ORIGINALE DEVELOPPEE, UN LOGICIEL SPECIFIQUE A ETE REALISE ET ENSUITE INTEGRE DANS LE CODE D'ELEMENTS FINIS MEF-MOSAIC
Book Synopsis Étude thermomécanique des disques de frein by : Ali Belhocine
Download or read book Étude thermomécanique des disques de frein written by Ali Belhocine and published by Les Éditions du Net. This book was released on 2013-04-18 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: L’objet de cette thèse est de présenter une étude du comportement thermomécanique des disques de frein automobiles pour la prédiction de leur tenue en fatigue. La stratégie de calcul numérique est repose sur le code de calcul Ansys v.11. Ce dernier qui est basé sur la méthode des éléments finis et qui possède des algorithmes de gestion du contact avec frottement est utilisé pour simuler dans l’application du freinage le comportement du mécanisme malgré son complexité. Dans un premier temps, est présentée une analyse des phénomènes thermiques opérant dans un disque de frein en service (flux de chaleur généré par frottement, gradients thermiques élevés, élévation de température). Cette modélisation est effectuée en tenant compte l’influence d’un certains nombre de paramètre tel que le type de freinage, le mode de refroidissement, les matériaux de conceptions. Ensuite, une étude purement mécanique du contact sec entre le disque et plaquettes est développée avec une bonne prédiction devient un enjeu majeur pour les industriels tout en modélisant le chargement et les conditions aux limites autours du disque. Nous avons utilisé le même code de calcul pour visualiser les déplacements, les déformations globales dans le disque, les contraintes de cisaillement, les contraintes de Von Mises et les outils de contact des plaquettes tout en effectuant une étude paramétrique telle que ( le module de Young des plaquettes, le coefficient de frottement , le type de chargement , la vitesse de rotation du disque ,..) pour voir sa sensibilité sur les résultats de calcul. Ainsi, les analyses faites sur le comportement thermique et mécanique que de ces prototypes montrent que ces types de solutions technologiques représentent de réelles pistes d’amélioration qui répond au besoin de l’ingénieur en charge de la conception des disques de frein.
Book Synopsis Comportement thermique et caractérisation des échanges interfaciaux d’un frein à disque par approches théorique et expérimentale by : Toufik Bouache
Download or read book Comportement thermique et caractérisation des échanges interfaciaux d’un frein à disque par approches théorique et expérimentale written by Toufik Bouache and published by . This book was released on 2006 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le travail développé dans ce mémoire est une contribution à l’étude des transferts de chaleur dans un dispositif de freinage à disques. L’étude est effectuée par voies théorique, numérique et expérimentale. Une solution analytique est établie pour déterminer la distribution 3D de la température dans le disque en régime périodique établi. Des modélisations numériques 3D transitoire sont également développées. Les résultats de ces modélisations ont permis d’analyser les évolutions des températures et de déduire les gradients thermiques dans l’intégralité du dispositif traité. Ces éléments sont précieux pour l’étude du comportement thermomécanique du disque de frein (contraintes, déformations, efficacité et usure). Deux modèles inverses sont développés pour déterminer les températures et les paramètres de contact au niveau de l’interface disque-plaquette (coefficient du partage de flux et résistance thermique de contact). Des mesures thermiques par thermocouples ont été effectuées à l’aide d’un dispositif monté sur un tour d’usinage. Les résultats expérimentaux sont ensuite utilisés pour la procédure d’identification des paramètres de contact.
Book Synopsis Modern Tribology Handbook, Two Volume Set by : Bharat Bhushan
Download or read book Modern Tribology Handbook, Two Volume Set written by Bharat Bhushan and published by CRC Press. This book was released on 2000-12-28 with total page 1760 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent research has led to a deeper understanding of the nature and consequences of interactions between materials on an atomic scale. The results have resonated throughout the field of tribology. For example, new applications require detailed understanding of the tribological process on macro- and microscales and new knowledge guides the rational
Book Synopsis Mechanical Vibration by : William John Palm
Download or read book Mechanical Vibration written by William John Palm and published by . This book was released on 2007 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: Model, analyze, and solve vibration problems, using modern computer tools. Featuring clear explanations, worked examples, applications, and modern computer tools, William Palm's Mechanical Vibration provides a firm foundation in vibratory systems. You'll learn how to apply knowledge of mathematics and science to model and analyze systems ranging from a single degree of freedom to complex systems with two and more degrees of freedom. Separate MATLAB sections at the end of most chapters show how to use the most recent features of this standard engineering tool, in the context of solving vibration problems. The text introduces Simulink where solutions may be difficult to program in MATLAB, such as modeling Coulomb friction effects and simulating systems that contain non-linearities. Ample problems throughout the text provide opportunities to practice identifying, formulating, and solving vibration problems. KEY FEATURES Strong pedagogical approach, including chapter objectives and summaries Extensive worked examples illustrating applications Numerous realistic homework problems Up-to-date MATLAB coverage The first vibration textbook to cover Simulink Self-contained introduction to MATLAB in Appendix A Special section dealing with active vibration control in sports equipment Special sections devoted to obtaining parameter values from experimental data
Download or read book Satellite Situation Report written by and published by . This book was released on 1978-12 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Space Debris written by Heiner Klinkrad and published by Springer Science & Business Media. This book was released on 2006-09-01 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: The future evolution of the debris environment will be forecast on the basis of traffic models and possible hazard mitigation practices. The text shows how large trackable objects will have re-entry pinpointed and predictions made on related risk assessment for possible ground impact. Models will also be described for meteoroids which are also a prevailing risk.
Book Synopsis Organic Solid-State Lasers by : Sébastien Forget
Download or read book Organic Solid-State Lasers written by Sébastien Forget and published by Springer. This book was released on 2013-07-03 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic lasers are broadly tunable coherent sources, potentially compact, convenient and manufactured at low-costs. Appeared in the mid 60’s as solid-state alternatives for liquid dye lasers, they recently gained a new dimension after the demonstration of organic semiconductor lasers in the 90's. More recently, new perspectives appeared at the nanoscale, with organic polariton and surface plasmon lasers. After a brief reminder to laser physics, a first chapter exposes what makes organic solid-state organic lasers specific. The laser architectures used in organic lasers are then reviewed, with a state-of-the-art review of the performances of devices with regard to output power, threshold, lifetime, beam quality etc. A survey of the recent trends in the field is given, highlighting the latest developments with a special focus on the challenges remaining for achieving direct electrical pumping of organic semiconductor lasers. A last chapter covers the applications of organic solid-state lasers.
Author :Jean Goubault-Larrecq Publisher :Springer Science & Business Media ISBN 13 :9781402003684 Total Pages :448 pages Book Rating :4.0/5 (36 download)
Book Synopsis Proof Theory and Automated Deduction by : Jean Goubault-Larrecq
Download or read book Proof Theory and Automated Deduction written by Jean Goubault-Larrecq and published by Springer Science & Business Media. This book was released on 2001-11-30 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in computer applications has led to a new attitude to applied logic in which researchers tailor a logic in the same way they define a computer language. In response to this attitude, this text for undergraduate and graduate students discusses major algorithmic methodologies, and tableaux and resolution methods. The authors focus on first-order logic, the use of proof theory, and the computer application of automated searches for proofs of mathematical propositions. Annotation copyrighted by Book News, Inc., Portland, OR
Book Synopsis Global Warming and Climate Change by : Emma Carlson Berne
Download or read book Global Warming and Climate Change written by Emma Carlson Berne and published by Referencepoint Press. This book was released on 2008 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Throughout the world, the cause and impact of global warming and climate change is being passionately debated. While many claim that a climate crisis is imminent if greenhouse gases are not curbed, others argue that the effects have been overblown. Through objective overviews, primary sources, and full-color illustrations, this title will examine What Is Global Warming and Climate Change? What Are the Consequences of Global Warming? What Are the Controversies Surrounding Global Warming? What Are the Solutions for Global Warming?
Book Synopsis Scientific Canadian Mechanics' Magazine and Patent Office Record by : Canada. Patent Office
Download or read book Scientific Canadian Mechanics' Magazine and Patent Office Record written by Canada. Patent Office and published by . This book was released on 1966-03 with total page 1070 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser: 50 Years Of Discoveries by : Fabien Bretenaker
Download or read book Laser: 50 Years Of Discoveries written by Fabien Bretenaker and published by World Scientific. This book was released on 2014-10-27 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique book provides an overview of the principle and applications of lasers enriched with numerous illustrations.Being over fifty years old, lasers continue to amaze us. Their performance characteristics are constantly reaching new limits, and the scope of their applications continues to expand. Yet, it took years of effort by teams of physicists to transform the fundamental notions of Einstein into the first experimental beam of laser light. And history is still going on as fundamental research is now triggered by its remarkable properties.This book addresses every aspects of laser light, from its fundamental principles to its industrial applications, at a level particularly suited for high school teachers, students, and anybody curious about science and technology.
Book Synopsis Logic for Computer Science by : Jean H. Gallier
Download or read book Logic for Computer Science written by Jean H. Gallier and published by Courier Dover Publications. This book was released on 2015-06-18 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: This advanced text for undergraduate and graduate students introduces mathematical logic with an emphasis on proof theory and procedures for algorithmic construction of formal proofs. The self-contained treatment is also useful for computer scientists and mathematically inclined readers interested in the formalization of proofs and basics of automatic theorem proving. Topics include propositional logic and its resolution, first-order logic, Gentzen's cut elimination theorem and applications, and Gentzen's sharpened Hauptsatz and Herbrand's theorem. Additional subjects include resolution in first-order logic; SLD-resolution, logic programming, and the foundations of PROLOG; and many-sorted first-order logic. Numerous problems appear throughout the book, and two Appendixes provide practical background information.
