Academic literature on the topic 'Dynamic cracking'

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Dissertations / Theses on the topic "Dynamic cracking"

1

Crump, Timothy. "Modelling dynamic cracking of graphite." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/modelling-dynamic-cracking-of-graphite(71e81d6f-e712-458c-aa48-0a256749258a).html.

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Advances in dynamic fracture modelling have become more frequent due to increases in computer speed, meaning that its application to industrial problems has become viable. From this, the author has reviewed current literature in terms of graphite material properties, structural dynamics, fracture mechanics and modelling methodologies to be able to address operational issues related to the ageing of Advanced Gas-cooled Reactor (AGR) cores. In particular, the experimentally observed Prompt Secondary Cracking (PSC) of graphite moderator bricks which has yet to be observed within operational react
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Fejzo, R. "Dynamic behaviour of concrete structures with cracking." Thesis, Swansea University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.636965.

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The subject of this thesis is the behaviour of concrete structures under dynamic loading conditions and its modelling. In particular, the modelling of material behaviour is treated and a new material model for the description of plain concrete behaviour is proposed. For the modelling of the uncracked concrete behaviour, a strain rate sensitive elasto - viscoplastic material model developed by Bicanic is used. For the modelling of cracked concete behaviour, a distributed - smeared crack representation has been adopted. Crack initiation and propagation are controlled by a crack monitoring algori
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Marazzato, Frédéric. "Discrete element and time-integration methods forelasto-plasticity and dynamic cracking." Thesis, Paris Est, 2020. http://www.theses.fr/2020PESC1001.

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Cette thèse propose des contributions aux méthodes éléments discrets (MED) et à l’intégration temporelle explicite avec pour objectif applicatif les calculs de fissuration et de fragmentation pour des matériaux métalliques soumis à des chargements dynamiques. Les MED, qui sont traditionnellement utilisées pour simuler le comportement de matériaux granulaires, sont ré-interprétées à la lumière des méthodes de discrétisation de gradient afin d’être appliquées à la simulation de matériaux continus. Les maillages utilisables avec la MED proposée ont été étendus des maillages de Voronoi à des maill
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Beskari, Mohamed Ali. "Dynamic analysis of diffusion and convection in porous catalysts." Thesis, University of Salford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244857.

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Illes-Smith, Peter C. "A study of the modelling, dynamic simulation and control of the modern fluid catalytic cracking process." Thesis, University of Leeds, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.330143.

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Añez, Javier. "Modélisation de l'injection de pétrole pour les procédés FCC (Fluid Catalytic Cracking)." Thesis, Normandie, 2018. http://www.theses.fr/2018NORMR132/document.

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Cette thèse est une entreprise commune de VINCI Technologies et du laboratoire CNRS CORIA. De nombreux injecteurs comportent une zone de mélange interne dans laquelle les phases liquides et gazeuses sont toutes deux présentes dans une proportion significative. Par conséquent, cette zone appartient à la catégorie des écoulements diphasiques denses. Pour simuler la dispersion du liquide et caractériser le spray de ces injecteurs, des modèles appropriés sont nécessaires. Les points clés de cette approche sont la dispersion du liquide qui peut être associé au flux liquide turbulent et la quantité
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Castelo, Branco Veronica Teixeira Franco. "A unified method for the analysis of nonlinear viscoelasticity and fatigue cracking of asphalt mixtures using the dynamic mechanical analyzer." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-3136.

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Pelissari, Daniel Cícero 1989. "Estudo da influência dos bicos injetores sobre o escoamento gás-sólido e as reações em um riser de FCC via CFD." [s.n.], 2015. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266017.

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Orientador: Milton Mori<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Química<br>Made available in DSpace on 2018-08-27T17:58:36Z (GMT). No. of bitstreams: 1 Pelissari_DanielCicero_M.pdf: 3433960 bytes, checksum: 82461e75c8ef3d10fb44cd8d35de3eb9 (MD5) Previous issue date: 2015<br>Resumo: A aplicação de fluidodinâmica computacional (CFD) em estudos de otimização e projeto de novos equipamentos de processos industriais vem aumentando significativamente, uma vez que apresenta custo reduzido e possibilidade de avaliar equipamentos complexos e de extremas
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Wade, James. "Contact damage of ceramics and ceramic nanocomposites." Thesis, Loughborough University, 2017. https://dspace.lboro.ac.uk/2134/24932.

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Herein, we study the contact damage performance of two armour ceramics, alumina and silicon carbide, with varying microstructures and one particle-reinforced ceramic nanocomposite, alumina/silicon carbide, in an attempt to understand the microstructural mechanisms that affect plasticity and cracking under quasi-static and dynamic conditions. Quasi-static contact damage was imitated using Vickers indentation over a varying load regime. Numerical analysis of the indentation size effect, performed using the proportional specimen resistance model, allowed the contributions of plastic deformation a
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Eksi, Murat. "Optimization Of Mechanical And Microstructural Properties Of Weld Joints Between Aluminium-magnesium And Aluminium-magnesium-silicon Alloys With Different Thicknesses." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615649/index.pdf.

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For the last decades usage of aluminium alloys have been increasing tremendously. They have been used in aerospace industry widely and now aluminium alloys are becoming more and more popular in automotive and defense industries. Consequently<br>successful welding of aluminium alloys gains importance. In this study a research is carried out on eldability of plates having different thicknesses of composition 5754 aluminium and 6063 aluminium in T-fillet geometry using Gas-metal Arc Welding technique. It was aimed to have a successful joint without using pre-weld and post-weld heat treatments. Du
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