Détermination des déformations 3D de pièces thermoplastiques chargées fibres de verre courtes PDF Download

Author: Valérie Hosdez
Publisher:
ISBN:
Category :
Languages : fr
Pages : 174

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Book Description
Le but de ce travail de thèse est la prédiction des retraits et déformations de pièces injectées en thermoplastique chargé fibres de verre courtes. Le matériau utilisé a été premièrement caractérisé sous des conditions proches de celles appliquées en injection, les résultats étant ensuite intégrés au calcul. Deuxièmement, la simulation 3D du cycle d’injection a permis de définir l’orientation des fibres au sein des pièces injectées. Les retraits et déformations après éjection ont ensuite été calculés avec deux types de loi de comportement, élastique orthotrope et viscoélastique isotrope transverse. Les propriétés d’orientation dues à l’injection ont été transférées grâce à une interface vers un logiciel de calcul de structure. Enfin, les résultats ont été comparés avec des mesures expérimentales des déformations. À terme, on souhaite ainsi remplacer la phase expérimentale et itérative de détermination des paramètres optimaux du procédé par les prédictions de la simulation.

Author: Jean-Marie Berthelot
Publisher: Springer
ISBN: 9781461268031
Category : Technology & Engineering
Languages : en
Pages : 0

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Book Description
Mechanical engineering, an engineering discipline borne of the needs of the in dustrial revolution, is once again asked to do its substantial share in the call for industrial renewal. The general call is urgent as we face profound issues of produc tivity and competitiveness that require engineering solutions, among others. The Mechanical Engineering Series features graduate texts and research monographs intended to address the need for information in contemporary areas of mechanical engineering. The series is conceived as a comprehensive one that covers a broad range of concentrations important to mechanical engineering graduate education and re search. We are fortunate to have a distinguished roster of consulting editors on the advisory board, each an expert in one of the areas of concentration. The names of the consulting editors are listed on the next page of this volume. The areas of concentration are applied mechanics, biomechanics, computational mechan ics, dynamic systems and control, energetics, mechanics of materials, processing, thermal science, and tribology.

Author: J.A. Covas
Publisher: Springer Science & Business Media
ISBN: 9401585717
Category : Technology & Engineering
Languages : en
Pages : 470

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Book Description
Experts in rheology and polymer processing present up-to-date, fundamental and applied information on the rheological properties of polymers, in particular those relevant to processing, contributing to the physical understanding and the mathematical modelling of polymer processing sequences. Basic concepts of non-Newtonian fluid mechanics, micro-rheological modelling and constitutive modelling are reviewed, and rheological measurements are described. Topics with practical relevance are debated, such as linear viscoelasticity, converging and diverging flows, and the rheology of multiphase systems. Approximation methods are discussed for the computer modelling of polymer melt flow. Subsequently, polymer processing technologies are studied from both simulation and engineering perspectives. Mixing, crystallization and reactive processing aspects are also included. Audience: An integrated and complete view of polymer processing and rheology, important to institutions and individuals engaged in the characterisation, testing, compounding, modification and processing of polymeric materials. Can also support academic polymer processing engineering programs.

Author: It Meng Low
Publisher: Elsevier
ISBN: 0128208791
Category : Technology & Engineering
Languages : en
Pages : 690

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Book Description
Composite materials have been well developed to meet the challenges of high-performing material properties targeting engineering and structural applications. The ability of composite materials to absorb stresses and dissipate strain energy is vastly superior to that of other materials such as polymers and ceramics, and thus they offer engineers many mechanical, thermal, chemical and damage-tolerance advantages with limited drawbacks such as brittleness. Composite Materials: Manufacturing, Properties and Applications presents a comprehensive review of current status and future directions, latest technologies and innovative work, challenges and opportunities for composite materials. The chapters present latest advances and comprehensive coverage of material types, design, fabrication, modelling, properties and applications from conventional composite materials to advanced composites such as nanocomposites, self-healing and smart composites. The book targets researchers in the field of advanced composite materials and ceramics, students of materials science and engineering at the postgraduate level, as well as material engineers and scientists working in industrial R& D sectors for composite material manufacturing. Comprehensive coverage of material types, design, fabrication, modelling, properties and applications from conventional composite materials to advanced composites such as nanocomposites, self-healing and smart composites Features latest advances in terms of mechanical properties and other material parameters which are essential for designers and engineers in the composite and composite reinforcement manufacturing industry, as well as all those with an academic research interest in the subject Offers a good platform for end users to refer to the latest technologies and topics fitting into specific applications and specific methods to tackle manufacturing or material processing issues in relation to different types of composite materials

Author: Carlo Beltrame
Publisher: Oxbow Books
ISBN: 1782977066
Category : Social Science
Languages : en
Pages : 191

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Book Description
Between 2007 and 2012 the Department for Underwater Archaeology of the Croatian Conservation Institute from Zagreb and the Department of Humanistic Studies of the Ca' Foscari University of Venice collaborated in the recording, underwater excavation and analysis of the unusually well-preserved wreck of a 16th century Venetian merchantman in the Svetti Pavao shallow off the southern shore of the island of Mljet, Croatia. The shipwreck preserved many personal possessions of the crew as well as a number of bronze artillery pieces and the remains of a cargo of luxury and richly decorated ceramic material from Iznik and other oriental workshops. Although the excavation is not complete, this volume presents the results of the project so far. The methodological and technical aspects of the underwater investigation of the site, mainly by photogrammetry, are described; the historical and archaeological context of navigation in the late Medieval period in the eastern Mediterranean discussed; and the recovered artefacts described and catalogued in detail, together with the remains of the ship and its equipment that, because of depth and of problems of conservation, have been left in situ. The conservation and restoration of the finds are described in an appendix.

Author: Jan Wastiels
Publisher: MDPI
ISBN: 3039283308
Category : Technology & Engineering
Languages : en
Pages : 284

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Book Description
This Special Issue presents the latest advances in the field of Textile-Reinforced Cement Composites, including Textile-Reinforced Concrete (TRC), Textile-Reinforced Mortar (TRM), Fabric-Reinforced Cementitious Matrix (FRCM), etc. These composite materials distinguish themselves from other fibre-reinforced concrete materials by their strain-hardening behaviour under tensile loading. This Special Issue is composed of 14 papers covering new insights in structural and material engineering. The papers include investigations on the level of the fibre reinforcement system as well as on the level of the composites, investigating their impact and fatigue behaviour, durability and fire behaviour. Both the strengthening of existing structures and the development of new structural systems such as lightweight sandwich systems are presented, and analysis and design methods are discussed. This Special Issue demonstrates the broadness and intensity of the ongoing advancements in the field of Textile-Reinforced Cement composites and the importance of several future research directions.

Author: David G. Lovering
Publisher: Springer
ISBN: 1475717245
Category : Education
Languages : en
Pages : 536

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Author: Mohamed Haddar
Publisher: Springer
ISBN: 3319666975
Category : Technology & Engineering
Languages : en
Pages : 1225

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This book offers a collection of original peer-reviewed contributions presented at the 7th International Congress on Design and Modeling of Mechanical Systems (CMSM’2017), held in Hammamet, Tunisia, from the 27th to the 29th of March 2017. It reports on both research findings, innovative industrial applications and case studies concerning mechanical systems and related to modeling and analysis of materials and structures, multiphysics methods, nonlinear dynamics, fluid structure interaction and vibroacoustics, design and manufacturing engineering. Continuing on the tradition of the previous editions, this proceedings offers a broad overview on the state-of-the art in the field and a useful resource for academic and industry specialists active in the field of design and modeling of mechanical systems. CMSM’2017 was jointly organized by two leading Tunisian research laboratories: the Mechanical, Modeling and Manufacturing Laboratory of the National Engineering School of Sfax and the Mechanical Engineering Laboratory of the National Engineering School of Monastir..

Author: Frederick T. Wallenberger
Publisher: Springer Science & Business Media
ISBN: 144190736X
Category : Technology & Engineering
Languages : en
Pages : 479

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Book Description
Fiberglass and Glass Technology: Energy-Friendly Compositions and Applications provides a detailed overview of fiber, float and container glass technology with special emphasis on energy- and environmentally-friendly compositions, applications and manufacturing practices which have recently become available and continue to emerge. Energy-friendly compositions are variants of incumbent fiberglass and glass compositions that are obtained by the reformulation of incumbent compositions to reduce the viscosity and thereby the energy demand. Environmentally-friendly compositions are variants of incumbent fiber, float and container glass compositions that are obtained by the reformulation of incumbent compositions to reduce environmentally harmful emissions from their melts. Energy- and environmentally-friendly compositions are expected to become a key factor in the future for the fiberglass and glass industries. This book consists of two complementary sections: continuous glass fiber technology and soda-lime-silica glass technology. Important topics covered include: o Commercial and experimental compositions and products o Design of energy- and environmentally-friendly compositions o Emerging glass melting technologies including plasma melting o Fiberglass composite design and engineering o Emerging fiberglass applications and markets Fiberglass and Glass Technology: Energy-Friendly Compositions and Applications is written for researchers and engineers seeking a modern understanding of glass technology and the development of future products that are more energy- and environmentally-friendly than current products.

Author: Alexandra Fletcher (Museum curator)
Publisher: British Museum Research Public
ISBN: 9780861591978
Category : Nature
Languages : en
Pages : 0

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Book Description
A key publication on the British Museum's approach to the ethical issues surrounding the inclusion of human remains in museum collections and possible solutions to the dilemmas relating to their curation, storage, access management and display.