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Etude Et Simulation Des Effets Dynamiques De La Coupe Sur La Stabilite De La Coupe Et La Qualite Geometrique De La Surface Usinee
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Book Synopsis Etude et simulation des effets dynamiques de la coupe sur la stabilité de la coupe et la qualité géométrique de la surface usinée by : Grégoire Peigne
Download or read book Etude et simulation des effets dynamiques de la coupe sur la stabilité de la coupe et la qualité géométrique de la surface usinée written by Grégoire Peigne and published by . This book was released on 2003 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: En fraisage, la qualité de la coupe peut être dégradée par deux phénomènes vibratoires : le broutement, provoqué principalement par le mécanisme de régénération des surfaces usinées et les vibrations forcées dues à la périodicité de la coupe. Afin de déterminer les conditions favorables d'usinage, nous avons développé un simulateur de fraisage qui utilise une modélisation dynamique de la coupe à l'échelle macroscopique et intègre le comportement dynamique de l'ensemble "pièce outil machine". L'originalité de notre travail réside dans un nouveau modèle géométrique d'enlèvement de matière, qui accroît la précision des calculs et permet d'étudier la surface usinée à l'échelle de la rugosité tout en conservant de faibles temps de calcul, indispensables pour balayer l'espace des conditions de coupe. Les apports de notre modélisation sont validés en confrontant les résultats de simulation à ceux expérimentaux et ceux calculés en utilisant la modélisation géométrique la plus courante.
Book Synopsis Proceedings of the 4th International Symposium on Materials and Sustainable Development by : Abdelbaki Benmounah
Download or read book Proceedings of the 4th International Symposium on Materials and Sustainable Development written by Abdelbaki Benmounah and published by Springer Nature. This book was released on 2020-10-24 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the proceedings of the 4th International Symposium on Materials and Sustainable Development ISMSD2019 (CIMDD2019), will include a 3-day Conference (12 - 14 November). Organized by the Research Unit: Materials, Processes and Environment and M'hamed Bougara University of Boumerdes (Algeria) in partnership with University of Reims - Champagne-Ardenne (France), this symposium follows the success of CIMDD 2013-2015-2017 and continues the traditions of the highly successful series of International Conferences on the materials, processes and Environment. The Symposium will provide a unique topical forum to share the latest results of the materials and sustainable development research in Algeria and worldwide.
Book Synopsis Simulation de la qualité des surfaces usinées en fraisage 3 axes by : louisa Issaoui
Download or read book Simulation de la qualité des surfaces usinées en fraisage 3 axes written by louisa Issaoui and published by Editions Universitaires Europeennes. This book was released on 2014-02-20 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail s'interesse a une simulation geometrique, plus precisement, a une prediction de la qualite de la surface usinee qui peut etre determinee par l'extraction de la valeur de la rugosite. A l'aide de programme developpe sur Open Cascade on peut visualiser la forme de la surface usinee et determiner sa rugosite pour les differentes valeurs de parametre de coupe. Il est possible pour un utilisateur de choisir les parametres de coupe. Le resultat de la sortie estt la valeur de la rugosite pour une portion de surface donnee. Cette simulation sert pour une compraison des valeurs exprimentaux. On a execute le programme pour un cas de surfacage, en utilisant un outil a une seule dent et pour une passe. En perspective, il est possible de mener le travail pour des surfaces inclinees et avec des lignes de trajectoire rectilignes. IL est possible aussi d'obtenir des bons resultats pour des autres passes de coupe si on modelise la piece en des segments.
Book Synopsis CONTRIBUTION A L'ETUDE DE L'USINAGE A GRANDES VITESSES DE MATERIAUX METALLIQUES PAR SIMULATION SUR UN BANC D'ESSAI A BASE DE BARRES DE HOPKINSON by : SAID.. LARBI
Download or read book CONTRIBUTION A L'ETUDE DE L'USINAGE A GRANDES VITESSES DE MATERIAUX METALLIQUES PAR SIMULATION SUR UN BANC D'ESSAI A BASE DE BARRES DE HOPKINSON written by SAID.. LARBI and published by . This book was released on 1990 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: NOUS AVONS VOULU, A TRAVERS CETTE ETUDE, APPORTER NOTRE CONTRIBUTION A LA COMPREHENSION D'UN DOMAINE TRES IMPORTANT DE LA COUPE DES METAUX: L'USINAGE A GRANDE VITESSE. NOUS AVONS SUBSTITUE A UNE MACHINE OUTIL, UN BANC D'ESSAI EQUIPE D'UN CANON A GAZ, DE BARRES DE HOPKINSON ET D'UN DISPOSITIF CAPABLE DE SIMULER UNE OPERATION EN COUPE ORTHOGONALE. DES ESSAIS DE COMPRESSION DYNAMIQUE ET DE COUPE A GRANDE VITESSE ONT ETE EFFECTUES SUR UNE GAMME DE ONZE MATERIAUX. NOUS AVONS DETERMINE POUR CHAQUE MATERIAU: LES LOIS DE COMPORTEMENT EN COMPRESSION QUASI-STATIQUE ET DYNAMIQUE, ETUDIE L'INFLUENCE DES CONDITIONS DE COUPE ET GEOMETRIE DE L'OUTIL SUR L'EFFORT PRINCIPAL DE COUPE ET LE MECANISME DE FORMATION DU COPEAU, ELABORE UNE MODELISATION ANALYTIQUE DE LA COUPE BASEE SUR LES RESULTATS EXPERIMENTAUX. PAR AILLEURS, NOUS AVONS ANALYSE LE MECANISME DE FORMATION DU COPEAU A GRANDE VITESSE EN LIAISON AVEC LES PROPRIETES PHYSIQUES ET MECANIQUES DES MATERIAUX. FINALEMENT, NOUS PRESENTONS UNE ANALYSE DE L'INFLUENCE DE L'ACCROISSEMENT DE LA VITESSE DE COUPE SUR LE MECANISME DE FORMATION DU COPEAU, LE TYPE DE COPEAU ET L'ETAT MICROGEOMETRIQUE DE LA SURFACE USINEE
Book Synopsis IDENTIFICATION DES LOIS D'EFFORT DE COUPE DE TOURNAGE EN REGIME DYNAMIQUE by : BRAHIM.. BENMOHAMMED
Download or read book IDENTIFICATION DES LOIS D'EFFORT DE COUPE DE TOURNAGE EN REGIME DYNAMIQUE written by BRAHIM.. BENMOHAMMED and published by . This book was released on 1996 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA PRESENTE ETUDE S'INSCRIT DANS LE CADRE DES TRAVAUX SUR LA SIMULATION NUMERIQUE DES PROCEDES D'USINAGE A L'OUTIL COUPANT. AFIN D'AMELIORER LA GEOMETRIE DE LA SURFACE FINALE DE LA PIECE USINEE, NOUS NOUS SOMMES FIXE COMME OBJECTIF DE CONSTRUIRE UN MODELE QUI CARACTERISE L'INTERACTION OUTIL-PIECE (EFFORT DE COUPE, FORMATION DU COPEAU,). L'APPROCHE ADOPTEE DANS CETTE ETUDE S'APPUIE SUR DES HYPOTHESES CONDUISANT A DES MODELISATIONS SIMPLIFIEES DU PHENOMENE D'ENLEVEMENT DE MATIERE. CETTE APPROCHE PREND EN COMPTE LE COMPORTEMENT VIBRATOIRE DU SYSTEME D'USINAGE SANS NEGLIGER AUCUN DES ASPECTS MECANIQUES QUI PEUVENT AVOIR UNE INFLUENCE SUR LES RESULTATS. UNE FOIS LA LOI DE COUPE DYNAMIQUE ETABLIE, NOUS NOUS SOMMES INTERESSES A SA VALIDATION. GRACE A DEUX DISPOSITIFS EXPERIMENTAUX ET PAR L'INTERMEDIAIRE DE TROIS METHODES D'ANALYSE DIFFERENTES, NOUS AVONS IDENTIFIE LES COEFFICIENTS DYNAMIQUES DE COUPE ET VALIDE CETTE APPROCHE
Book Synopsis Contribution à l'étude expérimentale et à la modélisation de l'usinage des pièces de grandes dimensions by : Naoual Sabkhi
Download or read book Contribution à l'étude expérimentale et à la modélisation de l'usinage des pièces de grandes dimensions written by Naoual Sabkhi and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le travail de recherche réalisé dans le cadre de cette thèse introduit une nouvelle approche thermomécanique pour la modélisation du procédé de taillage à la fraise-mère et la maitrise de la précision géométrique et la qualité des pièces fabriquées. Le processus de coupe de la génération des dentures des couronnes de grandes dimensions a été simulé pour la prédiction des efforts de coupe. Le calcul de ces efforts s'est basé sur trois phases : une phase de simulation de l''intersection géométrique entre l'outil et la pièce moyennant une simulation de la cinématique du procédé par le logiciel CATIA, une phase de simulation numérique ALE (Approche Eulérienne-Lagrangienne) 2D de la coupe orthogonale, et une dernière phase dite 'simulation mécanistique' qui utilise les résultats des deux premières phases pour la prédiction des efforts de coupe. La présente approche conduit à un modèle de prédiction des efforts de coupe 3D pour le processus de taillage et apparaît comme une alternative intéressante à l'approche classique de la littérature qui nécessite beaucoup d'essais expérimentaux pour déterminer les coefficients spécifiques de coupe caractéristique du matériau usiné. Nous avons également proposé une approche prédictive basée sur une modélisation analytique de l'interaction arête-copeau lors d'une opération de taillage en finition. La démarche proposée présente l'intérêt de s'affranchir des essais d'usinage, souvent longs et couteux, dans le cas de cette opération complexe (gabarit et géométrie des pièces, cinématique, formation de copeau, etc.). Enfin, le modèle proposé a été appliqué pour analyser le taillage des grandes couronnes (plusieurs mètres) en phase de finition.
Author :Norberto Lopez de Lacalle Publisher :Springer Science & Business Media ISBN 13 :1848003803 Total Pages :456 pages Book Rating :4.8/5 (48 download)
Book Synopsis Machine Tools for High Performance Machining by : Norberto Lopez de Lacalle
Download or read book Machine Tools for High Performance Machining written by Norberto Lopez de Lacalle and published by Springer Science & Business Media. This book was released on 2008-10-01 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Machine tools are the main production factor for many industrial applications in many important sectors. Recent developments in new motion devices and numerical control have lead to considerable technological improvements in machine tools. The use of five-axis machining centers has also spread, resulting in reductions in set-up and lead times. As a consequence, feed rates, cutting speed and chip section increased, whilst accuracy and precision have improved as well. Additionally, new cutting tools have been developed, combining tough substrates, optimal geometries and wear resistant coatings. “Machine Tools for High Performance Machining” describes in depth several aspects of machine structures, machine elements and control, and application. The basics, models and functions of each aspect are explained by experts from both academia and industry. Postgraduates, researchers and end users will all find this book an essential reference.
Book Synopsis Dictionary of Building and Civil Engineering by : Don Montague
Download or read book Dictionary of Building and Civil Engineering written by Don Montague and published by Taylor & Francis. This book was released on 1996 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.
Book Synopsis Technology Of Machine Tools by : Arthur R. Gill
Download or read book Technology Of Machine Tools written by Arthur R. Gill and published by McGraw-Hill Education. This book was released on 2010-01-28 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technology of Machine Tools 7e provides state-of-the-art training for using machine tools in manufacturing technology, including up-to-date coverage of computer numerical control (CNC). It includes an overview of machine trades and career opportunities followed by theory and application. The text is structured to provide coverage of tools and measurement, machining tools and procedures, drilling and milling machines, computer-aided machining, and metallurgy. There is expanded coverage of computer-related technologies, including computer numerical control (CNC) and computer-aided design and manufacturing (CAD/CAM). New to the Seventh Edition of Technology of Machine Tools In addition to updating the text to reflect changes in the modern business/manufacturing world today – such as direct digital manufacturing,nantotechnology, and IDI – an entirely new section on Lean Manufacturing (Section 15) has been added to focus on this industry‐prominent philosophy. Units include: Continuous Improvement: Kaizan Pull (Kanban) Systems Total Productive Maintenance Value Stream Mapping Workplace Organization
Book Synopsis Advances in Hydroinformatics by : Philippe Gourbesville
Download or read book Advances in Hydroinformatics written by Philippe Gourbesville and published by Springer. This book was released on 2015-08-21 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a collection of extended papers based on presentations given during the SIMHYDRO 2014 conference, held in Sophia Antipolis in June 2014. It focuses on the modeling and simulation of fast hydraulic transients, on 3D modeling, and on uncertainties and multiphase flows. The book explores both the limitations and performance of current models and presents the latest developments based on new numerical schemes, high-performance computing, multiphysics and multiscale methods, and better interaction with field or scale model data. It addresses the interests of practitioners, stakeholders, researchers and engineers active in this field.
Download or read book Culture: urban future written by UNESCO and published by UNESCO Publishing. This book was released on 2016-12-31 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report presents a series of analyses and recommendations for fostering the role of culture for sustainable development. Drawing on a global survey implemented with nine regional partners and insights from scholars, NGOs and urban thinkers, the report offers a global overview of urban heritage safeguarding, conservation and management, as well as the promotion of cultural and creative industries, highlighting their role as resources for sustainable urban development. Report is intended as a policy framework document to support governments in the implementation of the 2030 Agenda for Sustainable Urban Development and the New Urban Agenda.
Book Synopsis Amongst Mathematicians by : Elena Nardi
Download or read book Amongst Mathematicians written by Elena Nardi and published by Springer Science & Business Media. This book was released on 2008 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a unique perspective on ways in which mathematicians: perceive their students' learning; teach; reflect on their teaching practice. Elena Nardi achieves this by employing two fictional, yet entirely data-grounded, characters to create a conversation on these important issues. The construction of these characters is based on large bodies of data including intense focused group interviews with mathematicians and extensive analyses of students' written work, collected and analyzed over a substantial period.
Download or read book Transactions of ASME. written by and published by . This book was released on 1897 with total page 1288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Satellite Situation Report by : Goddard Space Flight Center. Office of Public Affairs
Download or read book Satellite Situation Report written by Goddard Space Flight Center. Office of Public Affairs and published by . This book was released on 1977 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Buyology written by Martin Lindstrom and published by Currency. This book was released on 2010-02-02 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: NEW YORK TIMES BESTSELLER • “A fascinating look at how consumers perceive logos, ads, commercials, brands, and products.”—Time How much do we know about why we buy? What truly influences our decisions in today’s message-cluttered world? In Buyology, Martin Lindstrom presents the astonishing findings from his groundbreaking three-year, seven-million-dollar neuromarketing study—a cutting-edge experiment that peered inside the brains of 2,000 volunteers from all around the world as they encountered various ads, logos, commercials, brands, and products. His startling results shatter much of what we have long believed about what captures our interest—and drives us to buy. Among the questions he explores: • Does sex actually sell? • Does subliminal advertising still surround us? • Can “cool” brands trigger our mating instincts? • Can our other senses—smell, touch, and sound—be aroused when we see a product? Buyology is a fascinating and shocking journey into the mind of today's consumer that will captivate anyone who's been seduced—or turned off—by marketers' relentless attempts to win our loyalty, our money, and our minds.
Book Synopsis Manufacturing Automation by : Yusuf Altintas
Download or read book Manufacturing Automation written by Yusuf Altintas and published by Cambridge University Press. This book was released on 2012-01-16 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal cutting is widely used in producing manufactured products. The technology has advanced considerably along with new materials, computers and sensors. This new edition considers the scientific principles of metal cutting and their practical application to manufacturing problems. It begins with metal cutting mechanics, principles of vibration and experimental modal analysis applied to solving shop floor problems. There is in-depth coverage of chatter vibrations, a problem experienced daily by manufacturing engineers. Programming, design and automation of CNC (computer numerical control) machine tools, NC (numerical control) programming and CAD/CAM technology are discussed. The text also covers the selection of drive actuators, feedback sensors, modelling and control of feed drives, the design of real time trajectory generation and interpolation algorithms and CNC-oriented error analysis in detail. Each chapter includes examples drawn from industry, design projects and homework problems. This is ideal for advanced undergraduate and graduate students and also practising engineers.
Download or read book The English Verb written by F.R. Palmer and published by Routledge. This book was released on 2014-06-11 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: A long established and highly regarded account of all aspects of the English verb taking account of recent work on tense, phase and aspect, and of the author's own research. Theoretical discussion is kept to a minimum, but the arguments are always presented within a modern theoretical framework.
