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Un Modele De Distorsion Des Surfaces Seuil Pour La Simulation En Mise En Forme Des Toles Minces
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Book Synopsis Simulation de la mise en forme des structures minces by : Mohamed Rachik
Download or read book Simulation de la mise en forme des structures minces written by Mohamed Rachik and published by . This book was released on 1993 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail de recherche concerne la modélisation de la mise en forme des structures à parois minces. On distingue le cas des tôles minces transformées par emboutissage et les matériaux plastiques mis en forme par soufflage. Ce document présente des rappels de mécanique des milieux continus dont le formalisme sert de cadre d'écriture pour les équations d'équilibre avec des conditions aux limites évolutives et pour les lois de comportement en grandes transformations. Les aspects numériques liés à la résolution des équations d'équilibre et au traitement du contact avec frottement sont présentes. Les éléments finis que nous avons développés et utilisés sont décrits en détail. Des exemples de validation et d'application ont permis d'examiner et de quantifier l'influence d'un certain nombre de paramètres. Nos résultats sont confrontés aux résultats expérimentaux provenant de la littérature.
Book Synopsis Simulation numérique de l'endommagement dans les procédés de mise en forme by : Youssef Hammi
Download or read book Simulation numérique de l'endommagement dans les procédés de mise en forme written by Youssef Hammi and published by . This book was released on 2000 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail consiste à proposer une méthodologie numérique de réalisation virtuelle des procédés de fabrication et de mise en forme par grandes déformations plastiques avec endommagement. L'objectif étant de pouvoir optimiser virtuellement un procédé, en agissant sur les paramètres technologiques, de façon à soit retarder au maximum l'apparition d'un endommagement significatif, si l'on veut obtenir une pièce saine (forgage, emboutissage) ; soit favoriser l'amorçage et la croissance de l'endommagement, pour réaliser des opérations de découpage de toles par exemple. On propose une formulation générale anisotrope avec des couplages forts d'état et des dissipations. L'analyse des dissipations est faite dans le cadre des matériaux standards généralisés (MSG) avec une théorie non associée en utilisant deux formulations différentes. Une première formulation à surface unique qui est basée sur l'hypothèse qu'il ne peut y avoir d'endommagement sans écoulement plastique. Une seconde formulation à deux surfaces (couplées), une surface de plasticité écrouissable avec influence du dommage et une surface de non endommagement, qui relaxe l'hypothèse précédente. La généralisation aux transformations finies est réalisée dans le cadre d'une formulation dans un référentiel tournant à partir de la configuration intermédiaire, moyennant l'adoption de l'HPP pour la transformation élastique. Cette approche à l'avantage de découpler les non linéarités cinématique et matérielle. Sur le plan numérique, un soin particulier a été apporté pour l'intégration locale des équations couplées des différents modèles proposés (à deux surfaces ou une surface unique). Les algorithmes d'intégration ont été optimisés afin de réduire le nombre d'équations de 28 à 14 dans le cas anisotrope, et de 15 à 2 dans le cas totalement isotrope ; de calculer semi-analytiquement l'expression de la matrice tangente consistante et d'utiliser un schéma d'intégration locale asymptotique. Cette méthodologie a été validée en traitant plusieurs exemples 2D et 3D couvrant une large gamme de fabrication et de mise en forme : découpage de toles, emboutissage, forgeage, hydroformage de tubes complexes, etc
Book Synopsis MODELISATION MECANIQUE ET SIMULATION NUMERIQUE DU RETOUR ELASTIQUE EN EMBOUTISSAGE DES TOLES MINCES ET OPTIMISATION PARAMETRIQUE by : David Joannic
Download or read book MODELISATION MECANIQUE ET SIMULATION NUMERIQUE DU RETOUR ELASTIQUE EN EMBOUTISSAGE DES TOLES MINCES ET OPTIMISATION PARAMETRIQUE written by David Joannic and published by . This book was released on 1998 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA MODELISATION MECANIQUE ET NUMERIQUE DU RETOUR ELASTIQUE APRES EMBOUTISSAGE DES TOLES MINCES EST ENVISAGEE SELON DIFFERENTES STRATEGIES : IMPLICITE QUASI-STATIQUE ET DYNAMIQUE EXPLICITE. LA FORMULATION EST BASEE SUR DES ELEMENTS FINIS DE COQUES MINCES AVEC INTERPOLATION MIXTE DES COMPOSANTES DE CISAILLEMENT TRANSVERSE, DONT L'INTERET POUR LA PREVISION DU RETOUR ELASTIQUE EST DEMONTRE. OUTRE UNE DESCRIPTION PRECISE DU COMPORTEMENT MATERIEL DES TOLES, DIFFERENTES POSSIBILITES SONT ENVISAGEES POUR LA SIMULATION DE LA PHASE DE RETRAIT DES OUTILLAGES. ON DISTINGUE NOTAMMENT UN MODELE SIMPLIFIE CORRESPONDANT AU REMPLACEMENT DES OUTILLAGES PAR LES ACTIONS DE CONTACT QU'ILS EXERCENT ET UN MODELE PLUS REALISTE OU LES OUTILLAGES SONT CONSERVES AVEC UNE CINEMATIQUE CORRESPONDANT AU DECHARGEMENT. DES ESSAIS DE PLIAGE EN U OU V, CARACTERISES PAR UN FORT RETOUR ELASTIQUE, MONTRENT LA PRECISION DONNEE PAR LES METHODES PROPOSEES, PAR RAPPORT A DES RESULTATS NUMERIQUES OU EXPERIMENTAUX. UNE ANALYSE DE SENSIBILITE A ETE DEVELOPPEE POUR L'ANALYSE ET LA COMPREHENSION DU PROCEDE. BASEE SUR UNE METHODE DE DIFFERENCIATION DIRECTE DU SCHEMA DE RESOLUTION DU PROBLEME DIRECT, CETTE ANALYSE EST REALISEE DE MANIERE COHERENTE AVEC LA FORMULATION ELEMENTS FINIS. LES RESULTATS PRESENTES ILLUSTRENT AINSI L'INFLUENCE DES PARAMETRES DE PROCEDE SUR DES GRANDEURS REPRESENTATIVES DU RETOUR ELASTIQUE ET FOURNISSENT DES INDICATIONS TECHNOLOGIQUES UTILES DANS LE CADRE DU CONTROLE DE FORME. LE PROBLEME D'OPTIMISATION DE FORMES DES OUTILLAGES EST ICI TRAITE COMME UN PROBLEME DE MINIMISATION DE L'ERREUR DE FORME ENTRE PIECE REELLE APRES RETOUR ELASTIQUE ET PIECE DESIREE ET UTILISE LE CARACTERE INVERSE DU RETOUR ELASTIQUE. UN EXEMPLE NUMERIQUE EST PRESENTE ET DONNE DES RESULTATS SATISFAISANTS.
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.
Author :International Livestock Research Institute Publisher :ILRI (aka ILCA and ILRAD) ISBN 13 :9789291460038 Total Pages :268 pages Book Rating :4.4/5 (6 download)
Book Synopsis Livestock Policy Analysis by : International Livestock Research Institute
Download or read book Livestock Policy Analysis written by International Livestock Research Institute and published by ILRI (aka ILCA and ILRAD). This book was released on 1995-01-01 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Policy concepts; Identification of policy issues; Production systems, supply and demand; Market, price and trade policies; Marketing and distribution systems; Budget and manpower planning; Land tenure police for the livestock sector; Policy analysis report writing and communication; Livestock production and marketing in alphabeta - a case study.
Book Synopsis Agricultural English by : Georgeta Raţă
Download or read book Agricultural English written by Georgeta Raţă and published by Cambridge Scholars Publishing. This book was released on 2012-04-25 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agricultural English is a collection of essays on the English of Agriculture. The approach is a linguistic one: the different aspects of the English used in the field of agriculture (agricultural practices, agricultural systems) and in some fields related to agriculture (agricultural zoology, agri-tourism, biology, botany, ecology, entomology, gastronomy, land measurement, plant pathology, zoology) are analysed from a morphological (combination, derivation), syntactical (nominal phrases, verbal phrases), lexical and lexicographical, semantic (homonymy, semantic fields, synonymy, terminology), pragmatic (academic discourse, idiom, metaphor), etymological (etymon, Latin heritage), and contrastive (English–Croatian, English–French, English–German, English–Romanian, Romanian–English) points of view. The book will appeal to agriculturists, animal breeders, professors, researchers, students, and translators from Croatian-, English-, French-, German-, and Romanian-speaking countries, active in their own countries or abroad. The types of academic readership it would appeal to include academic teaching staff, researchers and students in the fields of agriculture and related fields – agricultural zoology, agri-tourism, biology, botany, ecology, entomology, gastronomy, land measurement, plant pathology, and zoology.
Author :John Henry Lorentz Publisher :Historical Dictionaries of Asia, Oceania, and the Middle East ISBN 13 : Total Pages :570 pages Book Rating :4.F/5 ( download)
Book Synopsis Historical Dictionary of Iran by : John Henry Lorentz
Download or read book Historical Dictionary of Iran written by John Henry Lorentz and published by Historical Dictionaries of Asia, Oceania, and the Middle East. This book was released on 2007 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides an overview of specific events, movements, people, political and social groups, places, trends, and chronology. Allows for considerable exploration of a number of historical and contemporary topics and issues. The modern period, defined as 1800-present, is covered extensively.
Book Synopsis Population, Environment and Development by : UN. Population Division
Download or read book Population, Environment and Development written by UN. Population Division and published by United Nations Publications. This book was released on 2001 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: The general trends of rapid population growth, sustained but uneven economic improvement, and environmental degradation, are well known. Population and development policies are vital components of action needed to ensure sustainable development and to safeguard the environment. The topics investigated in this report include: the evolution of population and the environment at major UN conferences; trends in population, environment and development; government views; health, mortality, fertility and the environment; urbanization.
Book Synopsis Baroque Bodies by : Mitchell Greenberg
Download or read book Baroque Bodies written by Mitchell Greenberg and published by Cornell University Press. This book was released on 2001 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mitchell Greenberg explores the significance of fantasies of the body in seventeenth-century France through provocative and subtle readings of some of the most intriguing texts of the period. Beginning with an eloquent invocation of the status of the king in classical France, Greenberg surveys the complex sociopolitical history of Louis XIV's reign, analyzing both Moliere and the entire corpus of Racine. The central chapters of Baroque Bodies deal with such fascinating texts as the Memoires of the abbe de Choisy (the first existing account of a male cross-dresser); two founding texts of the modern pornographic genre, L'ecole des filles and L'academie des dames; and the "autobiography" of Marie de l'Incarnation, the famous "mystic" and founder of the first Ursuline convent in Canada. In addition to his richly nuanced readings, Greenberg integrates into his argument material from a broad array of disciplines, including psychoanalysis, feminism, epistemology, and history. He also points out the implications of his argument for the political, theological, and historical thought of the period, moving effortlessly from witch trials in France to discussions of bodies in Renaissance English literary criticism to the works of Bakhtin, Foucault, Freud, and Lacan.
Book Synopsis The Body in Francophone Literature by : El Hadji Malick Ndiaye
Download or read book The Body in Francophone Literature written by El Hadji Malick Ndiaye and published by McFarland. This book was released on 2016-05-24 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: Much of Francophone literature is a response to an elaborate discourse that served to bolster colonial French notions of national grandeur and to justify expansion of French territories overseas. A form of colonial exoticism saw the colonized subject as a physical, cultural, aesthetic and even sexual singularity. Francophone writers sought to rehabilitate the status of non-Western peoples who, through the use of anthropometric techniques, had been racially classified as inferior or primitive. Drawing on various Francophone texts, this collection of new essays offers a compelling study of the literary body--both corporeal and figurative. Topics include the embodiment of diasporic identity, the body politic in prison writing, women's bodies, and the body's expression of trauma inflicted by genocidal violence.
Book Synopsis Agrimonde – Scenarios and Challenges for Feeding the World in 2050 by : Sandrine Paillard
Download or read book Agrimonde – Scenarios and Challenges for Feeding the World in 2050 written by Sandrine Paillard and published by Springer. This book was released on 2016-09-03 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: How will the world be able to feed close to 9 billion people in 2050 and still maintain the ecosystems? In this perspective, INRA and CIRAD launched the initiative, in 2006, to develop a foresight project for analysing issues pertaining to the world's food and agricultural systems on the 2050 timeline. This book provides a synthetic presentation of the main conclusions that this foresight project has yielded. First, it recapitulates the main statistical references for the period 1961 to 2003, before going on to describe the Agribiom simulation tool used to calculate food biomass resource use balances. Two scenarios on the 2050 timeline are then considered: Agrimonde GO is a trend-based scenario that bets on economic growth to feed the world, in a context where environmental protection is not a priority; in contrast, the idea in Agrimonde 1 is to feed the world while preserving its ecosystems.
Book Synopsis Historical Dictionary of Pakistan by : Shahid Javed Burki
Download or read book Historical Dictionary of Pakistan written by Shahid Javed Burki and published by . This book was released on 1999 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pakistan is unlike most other countries in the emerging world. It is one of the two nations – the other being the state of Israel – founded on the basis of religion. Although it was created to provide a homeland for the Muslim community of British India, in its original form it was able to accommodate only about half of the people of Islamic faith who lived in the subcontinent. Pakistan’s birth in 1947 resulted in one of the largest movements of people in human history when some 14 million people left their homes, with 8 million Muslims leaving India for what is now Pakistan and 6 million Hindus and Sikhs moving in the opposite direction. This was the first large-scale incidence of ethnic cleansing the world was to witness. --
Book Synopsis Baroque New Worlds by : Lois Parkinson Zamora
Download or read book Baroque New Worlds written by Lois Parkinson Zamora and published by Duke University Press. This book was released on 2010-07-13 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt: Baroque New Worlds traces the changing nature of Baroque representation in Europe and the Americas across four centuries, from its seventeenth-century origins as a Catholic and monarchical aesthetic and ideology to its contemporary function as a postcolonial ideology aimed at disrupting entrenched power structures and perceptual categories. Baroque forms are exuberant, ample, dynamic, and porous, and in the regions colonized by Catholic Europe, the Baroque was itself eventually colonized. In the New World, its transplants immediately began to reflect the cultural perspectives and iconographies of the indigenous and African artisans who built and decorated Catholic structures, and Europe’s own cultural products were radically altered in turn. Today, under the rubric of the Neobaroque, this transculturated Baroque continues to impel artistic expression in literature, the visual arts, architecture, and popular entertainment worldwide. Since Neobaroque reconstitutions necessarily reference the European Baroque, this volume begins with the reevaluation of the Baroque that evolved in Europe during the late nineteenth century and the early twentieth. Foundational essays by Friedrich Nietzsche, Heinrich Wölfflin, Walter Benjamin, Eugenio d’Ors, René Wellek, and Mario Praz recuperate and redefine the historical Baroque. Their essays lay the groundwork for the revisionist Latin American essays, many of which have not been translated into English until now. Authors including Alejo Carpentier, José Lezama Lima, Severo Sarduy, Édouard Glissant, Haroldo de Campos, and Carlos Fuentes understand the New World Baroque and Neobaroque as decolonizing strategies in Latin America and other postcolonial contexts. This collection moves between art history and literary criticism to provide a rich interdisciplinary discussion of the transcultural forms and functions of the Baroque. Contributors. Dorothy Z. Baker, Walter Benjamin, Christine Buci-Glucksmann, José Pascual Buxó, Leo Cabranes-Grant, Haroldo de Campos, Alejo Carpentier, Irlemar Chiampi, William Childers, Gonzalo Celorio, Eugenio d’Ors, Jorge Ruedas de la Serna, Carlos Fuentes, Édouard Glissant, Roberto González Echevarría, Ángel Guido, Monika Kaup, José Lezama Lima, Friedrich Nietzsche, Mario Praz, Timothy J. Reiss, Alfonso Reyes, Severo Sarduy, Pedro Henríquez Ureña, Maarten van Delden, René Wellek, Christopher Winks, Heinrich Wölfflin, Lois Parkinson Zamora
Download or read book The Abandoned Baobab written by Ken Bugul and published by University of Virginia Press. This book was released on 2008 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite its unflinching look at our darkest impulses, and at the stark facts of being a colonized African, the book is ultimately inspirational, for it exposes us to a remarkable sensibility and a hard-won understanding of one's place in the world.CARAF Books: Caribbean and African Literature Translated from French
Download or read book Neo-Baroque written by Omar Calabrese and published by Princeton University Press. This book was released on 2017-03-14 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: A leading young Italian semiologist scrutinizes today's cultural phenomena and finds the prevailing taste to be "neo-baroque"--characterized by an appetite for virtuosity, frantic rhythms, instability, poly-dimensionality, and change. Omar Calabrese locates a "sign of the times" in an amazing variety of literary, philosophical, artistic, musical, and architectural forms, from the Venice Biennale through the "new science" to television series, video games, and "zapping" with the remote control device from channel to channel! Calabrese admits that he begins the book with a refusal to distinguish between "Donald Duck and Dante." Avoiding hierarchies or ghettos among works, he takes his readers on a fast-paced expedition through contemporary culture that closes with an elegant essay on evaluation and classical form. According to Calabrese, the enormous quantity of narrative now being produced has led to a new situation: everything has already been said, and everything has already been written. The only way of avoiding saturation has been to turn to a poetics of repetition. The author shows that pleasure in texts is now produced by tiny variations, and a certain kind of citation from other works has taken on a central importance that would have been unthinkable only a few years ago. In describing this development, and others shared by both avant-garde and mass media, he makes us aware of the rapid shrinkage in the once ample space between "highbrow" and "lowbrow." Originally published in 1992. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.
Book Synopsis The Inordinate Eye by : Lois Parkinson Zamora
Download or read book The Inordinate Eye written by Lois Parkinson Zamora and published by . This book was released on 2006 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Inordinate Eye traces the Baroque from a European colonizing instrument encoding Catholic and monarchical ideologies to a New World instrument of resistance to those same structures. Lois Parkinson Zamora shows that in the early decades of the twentieth century Latin American writers began to recuperate the hybrid forms of New World Baroque art and architecture for the purpose of creating a discourse of "counterconquest" - that is, a discourse of postcolonial self-definition aimed at disrupting entrenched power structures, perceptual categories, and literary forms."--BOOK JACKET.
Book Synopsis Albrecht Dürer's Renaissance by : David Price
Download or read book Albrecht Dürer's Renaissance written by David Price and published by University of Michigan Press. This book was released on 2003 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: This lavishly illustrated book provides a fresh and challenging new perspective on the life and Work of Dürer
