Accueil
Résultat de la recherche
11 résultat(s) recherche sur le tag 'ordinateur''
Ajouter le résultat dans votre panier Affiner la recherche Générer le flux rss de la recherche
Partager le résultat de cette recherche
Dynamics of filler size and spatial distribution in a plasticating single screw extruder – modeling and experimental observations / N. Domingues in INTERNATIONAL POLYMER PROCESSING, Vol. XXV, N° 3 (07/2010)
[article]
Titre : Dynamics of filler size and spatial distribution in a plasticating single screw extruder – modeling and experimental observations Type de document : texte imprimé Auteurs : N. Domingues, Auteur ; A. Gaspar-Cunha, Auteur ; Jose A. Covas, Auteur ; M. Camesasca, Auteur ; M. Kaufman, Auteur ; Ica Manas-Zloczower, Auteur Année de publication : 2010 Article en page(s) : p. 188-198 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Extrusion (mécanique)
Matières plastiques -- Extrusion:Polymères -- Extrusion
Simulation par ordinateur
Vis d'extrusionTags : 'Vis d'extrusion' 'Distribution spatiale' 'Dynamique de dispersion' 'Modélisation par ordinateur' Index. décimale : 668.9 Polymères Résumé : A model of agglomerate break-up, incorporating both rupture and erosion, is employed to predict the dynamics of filler size distribution in a plasticating single screw extruder. Filler spatial distribution along the extruder length was also ascertained and direct comparison of experimental and computational data proved to be satisfactory. The method was also used to investigate the effect of material properties, operating conditions and extruder geometry on the dynamics of agglomerate dispersion along a single screw extruder. Generally, dispersion levels were primarily governed by the magnitude of the hydrodynamic stresses developed in the extruder and the residence time in the melt. DOI : 10.3139/217.2319 En ligne : https://drive.google.com/file/d/1XmHHPKoqwVuve8PTbeMo4KMiViOsJWXK/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9733
in INTERNATIONAL POLYMER PROCESSING > Vol. XXV, N° 3 (07/2010) . - p. 188-198[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 012302 - Périodique Bibliothèque principale Documentaires Disponible A fully-integrated composite part design / Laurent Delsart in JEC COMPOSITES MAGAZINE, N° 24 (04/2006)
[article]
Titre : A fully-integrated composite part design Type de document : texte imprimé Auteurs : Laurent Delsart, Auteur ; Olivier Le Roy, Auteur Année de publication : 2006 Article en page(s) : p. 24-25 Langues : Anglais (eng) Catégories : Avions -- Matériaux
Composites à fibres
Conception assistée par ordinateur -- Logiciels
Simulation par ordinateurTags : 'Industrie aéronautique' 'Composites fibres 'Logiciel conception' Fabrication 'Simulation ordinateur' 'Catia V5' Index. décimale : 668.4 Plastiques, vinyles Résumé : As the standard in the aerospace industry, the CATIA V5 Composites Design solution is already in use at major aircraft manufacturers and suppliers for developing largely composites-based new-generation aircraft. Note de contenu : - A specification-driven design approach
- Manufacturing parameter management early in the design process
- Associativity/consistency
- Supporting all composite manufacturingEn ligne : http://www.jeccomposites.com/news/composites-news/fully-integrated-composite-par [...] Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13986
in JEC COMPOSITES MAGAZINE > N° 24 (04/2006) . - p. 24-25[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 004647 - Périodique Bibliothèque principale Documentaires Disponible Boosting composite structures design-to-manufacturing process with composite design solutions / Rani Richardson in SAMPE JOURNAL, Vol. 46, N° 2 (03-04/2010)
[article]
Titre : Boosting composite structures design-to-manufacturing process with composite design solutions Type de document : texte imprimé Auteurs : Rani Richardson, Auteur Année de publication : 2010 Article en page(s) : p. 34-40 Note générale : Bibliogr. Langues : Américain (ame) Tags : 'Matériaux composites' Conception 'Technologie 3D' 'Simulation ordinateur' Composites Design workbench 'Management cycle vie' Index. décimale : 668.4 Plastiques, vinyles Résumé : Working in a 3D unified virtual platform streamlines the design, simulation, and manufacturing of composite structures. 3D technology makes it easier to achieve design milestone throughout all stages of the design process. Some examples of this include :
- Design integrating functional requirements and rules of laminate stacking
- Structural simulation to validate the final detailed "as built part"
- Manufacturing simulation such as ply producibility and curing simulation
Designing a composites structure is a long and tedious process. Orientation of fiber directions and how the stack-up order of plies are laid up on the mold influences the structural behavior of the part. Traditionally operators on the shop floor determined the lay-up strategy for a ply by combining manual trial and error with experience. Using integrated automated manufacturing technology new fiber direction strategies are allowed : deposited fiber can follow a complex patho instead of one single direction. Using the virtual 3D composites model, users can take full advantage of this technology revolution combining it with a new degree of freedom thus enabling the designed fiber path to be specified by simulation and manufacturing.
Dassault Systems reveals its own domain expertise along with that of best in class Product Lifecycle Management (PLM) industry solution partners. The partners have joined the ecosystem to expand the scope of the composites design to manufacturing processes.
This article will cover the following four composites design contexts in detail, illustrating the benefits of a complete, end-to-end 3D composites design environment.
. Industrial design to black art
. Design in assembly context
. Design in analysis context
. Design in manufacturing context.Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8517
in SAMPE JOURNAL > Vol. 46, N° 2 (03-04/2010) . - p. 34-40[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 011995 * Périodique Bibliothèque principale Documentaires Disponible Computational approach for composite material allowables using sealed envelope predictions for reduced testing / Galib Abumeri in SAMPE JOURNAL, Vol. 45, N° 5 (09-10/2009)
[article]
Titre : Computational approach for composite material allowables using sealed envelope predictions for reduced testing Type de document : texte imprimé Auteurs : Galib Abumeri, Auteur ; M. Garg, Auteur ; Frank Abdi, Auteur ; A. McCloskey, Auteur ; R. Bohner, Auteur Année de publication : 2009 Article en page(s) : p. 26-35 Note générale : Bibliogr. Langues : Américain (ame) Tags : 'Composites polymères' 'Simulation par ordinateur' 'Tests réduits' 'Résistance des matériaux' Index. décimale : 668.4 Plastiques, vinyles Résumé : Accurate prediction of 1- and B-basis material allowables is essential for statistical characterization and risk reduction of structural aerospace materials. Current practices for determining allowables for polymer composites follow recommended procedures set forth by CMH-17 (formerly military handbook MIL-HKBK-17-1E) and FAA. The process is costly and time consuming as accurate determination of allowables requires physical testing of a large number of coupons for various layup configurations and test environments. Further, new composite materials are introduced to the market at a rapid rate amplyfying the need for timely cost effective approach.
To mitigate time and cost associated with material allowable generation, Alpha STAR Corporation (ASC) and Northrop Grumman (NG) are cooperating in an effort to explore a novel computational method for predicting B-basis strength valeus of polymer matrix composites. The approach combines composites mechanics based progressive failure analysis (PFA), finite element analysis, probabilistic methods, and reduced testing to virtually generate coupon tests.
To examine the validity of this approach the ASC-NG team used a "sealed envelope" process. Here, ASC made its predictions independent of test results and then handed them to NG for comparison against a "sealed envelope" of real test data. B-basis tensile strength values for un-notched and notched IM7/MTM45-1 coupons were predicted (using a reduced number of test replicates) and provided to the NG team. Predicted results were compared to those obtained using standard military specification practices and the standard number of test replicates. This computational approach has potential for simulation of all types of ASTM tests under various environmental conditions, potentially reducing the required number of test replicates by more than 67 %.
The difference in the B-basis results obtained from prediction and those from current practices ranged from -5,8 % and -7,95 %. The average difference between th two results was less than -0,2 %. The difference between the two solutions was less than 1 % for 30 % of the test cases simulated.Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7194
in SAMPE JOURNAL > Vol. 45, N° 5 (09-10/2009) . - p. 26-35[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 011509 - Périodique Bibliothèque principale Documentaires Disponible Extrusion, thermoformage et soufflage : des logiciels spécifiques / Christian Buisson in PLASTIQUES & ELASTOMERES MAGAZINE, N° 54-2 (03/2002)
[article]
Titre : Extrusion, thermoformage et soufflage : des logiciels spécifiques Type de document : texte imprimé Auteurs : Christian Buisson, Auteur Année de publication : 2002 Article en page(s) : p. 10-11 Langues : Français (fre) Tags : Logiciel 'Simulation ordinateur' 'Formage à chaud' 'Moulage soufflage' extrusion' Polymère Index. décimale : 668.4 Plastiques, vinyles Résumé : La simulation des procédés d'extrusion, de thermoformage ou de soufflage s'impose dès la conception des produits. Cette conception va influer sur la géométrie des outillages donc sur les conditions de comportement des polymères dans les outillages et donc sur la qualité de la vitesse de production. Ces logiciels présents sur le marché depuis plusieurs années ne cessent d'évoluer. La société Cerap, spécialisée dans le domaine de l'ingénierie de la plasturgie, nous fait part des dernières évolutions. Note de contenu : - Toujours mieux
- Adapter les logiciels
Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14186
in PLASTIQUES & ELASTOMERES MAGAZINE > N° 54-2 (03/2002) . - p. 10-11[article]Réservation
Réserver ce document
Exemplaires (2)
Code-barres Cote Support Localisation Section Disponibilité 000867 - Périodique Bibliothèque principale Documentaires Disponible 000869 - Périodique Bibliothèque principale Documentaires Disponible Introduction and benefits of computerised color matching system in the coatings industry - A review / Tejashree Sawant in PAINTINDIA, Vol. XLIX, N° 12 (12/1999)
PermalinkNouveaux codes 3D pour l'injection / T. Coupez in PLASTIQUES & ELASTOMERES MAGAZINE, N° 53-3 (04/2001)
PermalinkRheology and structure of complex fluids via nonequilibrium molecular dynamics / Siegfried Hess in LES CAHIERS DE RHEOLOGIE, Vol. XV, N° 1 (10/1996)
PermalinkSimulation d'injection : De l'approximation à l'analyse des qualités intrinsèques / Pierre Mitev in PLASTIQUES & ELASTOMERES MAGAZINE, N° 54-2 (03/2002)
PermalinkLa simulation des procédés d'extrusion / B. Toure in PLASTIQUES & ELASTOMERES MAGAZINE, N° 52-7 (10/2000)
PermalinkSynthesis of alkyds and polyesters using graphic user interface based computer program / Sanjit Datta in PAINTINDIA, Vol. XLIX, N° 4 (04/1999)
Permalink