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Dissertations / Theses on the topic 'Rotors'

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1

Guirao, Victor Suman [UNESP]. "Mancais magnéticos ativos para atenuação de vibrações em eixos rotativos." Universidade Estadual Paulista (UNESP), 2012. http://hdl.handle.net/11449/94526.

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Made available in DSpace on 2014-06-11T19:27:14Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-08-14Bitstream added on 2014-06-13T18:55:42Z : No. of bitstreams: 1 guirao_vs_me_ilha.pdf: 3586237 bytes, checksum: 945e594528c1e4e71d8ddb43d3bc1001 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Este trabalho trata do controle de vibrações em rotores utilizando mancais magnéticos ativos. Foram apresentadas simulações numéricas para o posicionamento ótimo de um atuador magnético utilizado para
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2

Sino, Rim. "Comportement dynamique et stabilité des rotors : application aux rotors composites." Lyon, INSA, 2007. http://theses.insa-lyon.fr/publication/2007ISAL0067/these.pdf.

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Ce travail a pour objet l'étude de la stabilité des ensembles tournants lorsque des termes d'amortissement interne (dus aux matériaux) et d'amortissement externe (paliers) sont introduits dans le modèle. La majorité des études identifiées dans la littérature sont fondées sur des développements numériques. La principale difficulté réside dans l'évaluation des paramètres physiques de l'amortissement interne qui permettent une prédiction des instabilités potentielles avec une précision suffisante. Afin de considérer des propriétés mécaniques réelles en terme d'amortissement interne, un modèle rhé
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3

Sino, Rim Jacquet-Richardet Georges. "Comportement dynamique et stabilité des rotors application aux rotors composites /." Villeurbanne : Doc'INSA, 2007. http://docinsa.insa-lyon.fr/these/pont.php?id=sino.

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4

Jarroux, Clément. "Nonlinear transient dynamics of on-board rotors supported by Active Magnetic Bearings." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSEI069/document.

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De manière générale, les turbomachines sont des machines tournantes permettant la conversion des différents types d’énergie. Ces dernières sont composées d’une partie mécanique en rotation, appelée rotor, interagissant avec un fluide. La rotation a donc un rôle clé pour ces machines et la liaison entre les parties fixes et les parties tournantes, appelée palier, est primordiale pour un fonctionnement fiable et optimal. Les turbomachines supportées par des paliers magnétiques actifs (PMAs) sont de plus en plus utilisées par les industriels notamment grâce à l’absence de contact direct entre par
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5

Matos, Catherine Anne Moseley. "Download reduction on a wing-rotor configuation." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/12058.

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6

Rigsby, James Michael. "Stability and control issues associated with lightly loaded rotors autorotating in high advance ratio flight." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26536.

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Thesis (Ph.D)--Aerospace Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: J.V.R. Prasad; Committee Member: Daniel P. Schrage; Committee Member: David A. Peters; Committee Member: Dewey H. Hodges; Committee Member: Lakshmi N Sankar. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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7

Akin, Hakki E. "A computer code for rapid calculation of bending frequencies of rotor blades." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://library.nps.navy.mil/uhtbin/hyperion-image/02sep%5FAkin.pdf.

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Thesis (M.S. in Aeronautical Engineering)--Naval Postgraduate School, June 2002.<br>Thesis advisor(s): E. Roberts Wood, Mark A. Couch. Includes bibliographical references (p. 195-196). Also available online.
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8

Atkinson, G. T. "Wind rotors in yaw." Thesis, University of Cambridge, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384765.

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9

Xie, Lihan. "Suivi numérique des bifurcations pour l'analyse paramétrique de la dynamique non-linéaire des rotors." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEI018/document.

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Au cœur des moyens de transport, de transformation d'énergie, et de biens d'équipements, les machines tournantes peuvent avoir des comportements dynamiques complexes dus à de multiples sources de non linéarités liées aux paliers hydrodynamiques, à la présence de fissures, aux touches rotor-stator, ... Des phénomènes comme les décalages fréquentiels et donc de vitesses critiques, les cycles d'hystérésis avec sauts d'amplitudes, le changement brutal du contenu fréquentiel des réponses, sont des expressions de ces comportements. Résoudre les équations du mouvement induites par des modélisations a
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10

Viana, Serra Villa Cristiano. "Dynamique non linéaire des rotors : Applications numériques et expérimentales à un rotor flexible." Ecully, Ecole centrale de Lyon, 2005. http://bibli.ec-lyon.fr/exl-doc/cvilla.pdf.

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Cette thèse s'intéresse au comportement dynamique des machines tournantes comportant des organes tels que des roulements dont le fonctionnement est décrit par des lois non linéaires. Le premier objectif de ces travaux de recherche est de mettre en oeuvre des méthodes d'analyse non linéaire afin de résoudre les équations du mouvement de tels systèmes tournants. Le second objectif consiste à effectuer des études expérimentales sur un rotor flexible et d'effectuer des corrélations avec les modèles numériques associés. La modélisation des parties linéaires du système tournante est faite par la mét
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11

Viana, Serra Villa Cristiano Thouverez Fabrice. "Dynamique non linéaire des rotors Applications numériques et expérimentales à un rotor flexible /." [S.l.] : [s.n.], 2005. http://bibli.ec-lyon.fr/exl-doc/cvilla.pdf.

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12

Velkova, Cvetelina Vladimirova. "Modélisation du comportement dynamique des rotors d’hélicoptères." Thesis, Paris, ENSAM, 2013. http://www.theses.fr/2013ENAM0055/document.

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Modélisation du comportement dynamique des rotors d'hélicoptèresL'objectif de la thèse est l'étude et la modélisation du comportement dynamique et aérodynamique du rotor de l'hélicoptère en considérant à la fois les forces d'inertie et les forces aérodynamiques et en tenant compte des déformations élastiques des pales. L'algorithme de couplage proposé permet d'effectuer le calcul transitoire avec échange de données entre les solveurs fluide et structure à chaque pas de temps.La particularité de cette étude est l'utilisation du modèle aérodynamique de la ligne active, qui représente les forces
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13

Ozbay, Serkan. "Extension-Twist Coupling Optimization in Composite Rotor Blades." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/10422.

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For optimal rotor performance in a tiltrotor aircraft the difference in the inflow and the rotor speeds between the hover and cruise flight modes suggests different blade twist and chord distributions. The blade twist rates in current tiltrotor applications are defined based upon a compromise between the figure of merit in hover and propeller efficiency in airplane mode. However, when each operation mode is considered separately the optimum blade distributions are found to be considerably different. Passive blade twist control, which uses the inherent variation in centrifugal forces on a rot
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14

Trchalik, Josef. "Aeroelastic modelling of gyroplane rotors." Thesis, University of Glasgow, 2009. http://theses.gla.ac.uk/1232/.

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The gyroplane represents the first successful rotorcraft design and it paved the way for the development of the helicopter during the 1940s. Gyroplane rotors are not powered in flight and work in autorotative regime and hence the characteristics of a helicopter rotor during powered flight and a rotor in autorotation differ significantly. Gyroplanes in the UK have been involved in number of fatal accidents during the last two decades. Despite several research projects focused on gyroplane flight dynamics, the cause of some of gyroplane accidents still remains unclear. The aeroelastic behaviour
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15

Redmond, Irvin. "Vibration reduction of flexible rotors." Thesis, University of Strathclyde, 1985. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=21476.

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A novel method of flexible-rotor vibration control, using an active contactless angular electromagnetic actuator is presented. A theoretical comparison of radial and angular damping is performed. Three different performance indices are defined and used to determine controller optimum damping/location data for different shaft systems. The controller settings are determined for two main cases: i) such that only one damping value is allowed throughout the entire shaft speed range (passive or fixed-gain active control), ii) the damping value is controlled as a function of rotor speed (adaptive con
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16

TOBON, BERNAL ROSENDO. "Equilibrage modal de rotors flexibles." Paris, ENSAM, 1989. http://www.theses.fr/1989ENAM0014.

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Les rotors des machines tournantes presentent d'inevitables petits defauts d'excentricite dus aux imperfections de fabrication et a celles qui se produisent en cours d'exploitation. Ces defauts se traduisent par des forces tournantes qui peuvent causer des vibrations importantes, notamment aux vitesses critiques. L'equilibrage consiste a disposer sur certains plans du rotor des masses correctives, telles que les amplitudes de vibration de flexion soient reduites. Dans l'industrie, on utilise la methode des coefficients d'influence. Les coefficients d'influence se determinent experimentalement;
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17

Mendes, Ricardo Ugliara 1987. "Desenvolvimento de um sistema de atuação magnética para excitação de sistemas rotativos." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264158.

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Orientadores: Kátia Lucchesi Cavalca Dedini, Luiz Otávio Saraiva Ferreira<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica<br>Made available in DSpace on 2018-08-17T15:03:09Z (GMT). No. of bitstreams: 1 Mendes_RicardoUgliara_M.pdf: 2835811 bytes, checksum: c8cae753b116c3893246e25fb64fdf4c (MD5) Previous issue date: 2011<br>Resumo: Máquinas rotativas apresentam um vasto campo de aplicação como aeronaves, fábricas, laboratórios e usinas de energia. Estas aplicações contêm eixos girando a altas velocidades que devem ter alto nível de confiabilidade
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18

Medeiros, Everton Coelho de. "Projeto e avaliação do comportamento dinâmico de um conjunto de mancais hidrodinâmicos aplicados a um rotor Jeffcott /." Guaratinguetá, 2017. http://hdl.handle.net/11449/151475.

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Orientador: Mauro Hugo Mathias<br>Coorientador: Willy Roger de Paula Mendonça<br>Banca: José Elias Toamzini<br>Banca: Everaldo de Barros<br>Resumo: Os estudos relacionados a máquinas rotativas são muito importantes no apoio e manutenção da operação de máquinas de grande porte, tais como turbo compressores ou turbinas. Modelos analíticos e numéricos têm sido aplicados por anos, entretanto, eles nem sempre apresentam as condições reais dessas máquinas. Por isso, o uso de procedimentos experimentais para a avaliação e validação de resultados de máquinas rotativas é importante para a etapa de proj
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19

He, Chengjian. "Development and application of a generalized dynamic wake theory for lifting rotors." Diss., Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/12389.

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20

Bitzer, Michael. "Identification of an improved body aerodynamics model for the BO 105." Thesis, Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/13832.

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21

Atilgan, Ali Rana. "Towards a unified analysis methodology for composite rotor blades." Diss., Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/15403.

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22

Soykasap, Omer. "Aeroelastic optimization of a composite tilt rotor." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/11823.

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23

Gündüz, Mustafa Emre. "Software integration for automated stability analysis and design optimization of a bearingless rotor blade." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/33916.

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The concept of applying several disciplines to the design and optimization processes may not be new, but it does not currently seem to be widely accepted in industry. The reason for this might be the lack of well-known tools for realizing a complete multidisciplinary design and analysis of a product. This study aims to propose a method that enables engineers in some design disciplines to perform a fairly detailed analysis and optimization of a design using commercially available software as well as codes developed at Georgia Tech. The ultimate goal is when the system is set up properly, the
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24

Dakel, Zaki. "Stabilité et dynamique non linéaire de rotors embarqués." Thesis, Lyon, INSA, 2014. http://www.theses.fr/2014ISAL0087/document.

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Les rotors sont excités non seulement par le balourd tournant mais aussi par les différents mouvements de leur support : turbocompresseurs de véhicules, turbomoteurs aéronautiques, pompes à vide portées en sont des exemples industriels. Ainsi la conception de rotors robustes capables de bien fonctionner sous de telles conditions (excitations extrêmes) est nécessaire pour éviter des instabilités, source de défaillance catastrophique. Le présent travail a pour objectif de prévoir le comportement dynamique d’un rotor embarqué monté sur des paliers rigides ou élastiques hydrodynamiques et soumis à
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25

Taylor, Dana J. "A method for the efficient calculation of elastic rotor blade dynamic response in forward flight." Diss., Georgia Institute of Technology, 1987. http://hdl.handle.net/1853/12396.

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26

Lacroix, Jacques. "Comportement dynamique d'un rotor au passage des vitesses critiques." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37614859d.

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27

Camargo, Fabio Assis de [UNESP]. "Análise experimental e computacional de um ventilador centrífugo." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/151783.

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Robison, Rosalyn Aruna Venner. "Turbulence ingestion noise of open rotors." Thesis, University of Cambridge, 2012. https://www.repository.cam.ac.uk/handle/1810/243244.

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Renewed interest in open rotor aeroengines, due to their fuel efficiency, has driven renewed interest in all aspects of the noise they generate. Noise due to the ingestion of distorted atmospheric turbulence, known as Unsteady Distortion Noise (UDN), is likely to be higher for open rotors than for conventional turbofan engines since the rotors are fully exposed to oncoming turbulence and lack ducting to attenuate the radiated sound. However, UDN has received less attention to date, particularly in wind-tunnel and flight testing programmes. In this thesis a new prediction scheme for UDN is desc
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Gersh, Danielle. "Single slot models for cage rotors." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361677.

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30

Zulu, Ackim. "Flux switching machines using segmental rotors." Thesis, University of Newcastle Upon Tyne, 2010. http://hdl.handle.net/10443/1070.

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Flux switching machines (FSM) employing a segmental rotor have field and armature systems on the stator and a presentation of an unexcited rotor with isolated segments. The single-tooth winding arrangement on the stator provides a potential for material and energy savings. The principle for producing bipolar flux in the armature stator teeth relies on the natural switching of the armature tooth flux, accomplished by the moving segments of the rotor. Three phase configurations have been studied, from conception and design to construction and testing, with field excitation provided by either a f
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31

Smith, Victoria Helen. "Orographic generation of convection and rotors." Thesis, University of Leeds, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.535127.

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32

Mitchell, K. C. "Weld repair of steam turbine rotors." Thesis, Swansea University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.638208.

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Turbine rotors are among the most critical and highly stressed components in steam power plants. Although relatively few instances of catastrophic rotor bursts have occurred, they have resulted in lengthy forced outages and severe economic penalties to the affected utilities. To forestall the possibility of a catastrophic burst, utilities will retire the rotors affected, generally to the original equipment manufacturer's (OEM's) recommendations. The criteria and methodology for determining which rotors should be retired are proprietary and vary among manufacturers. If utilities could extend th
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Tjahjono, Benny Wahjudi. "Dynamic performance of magnetically levitated rotors." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/36052.

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34

Read, Simon John. "Noise reduction technologies for open rotors." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.608127.

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35

Janse, van Rensburg Petrus J. "Energy storage in composite flywheel rotors." Thesis, Stellenbosch : Stellenbosch University, 2011. http://hdl.handle.net/10019.1/17864.

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Thesis (MScEng)--Stellenbosch University, 2011.<br>ENGLISH ABSTRACT: As the push continues for increased use of renewables on the electricity grid, the problem of energy storage is becoming more urgent than ever. Flywheels with wound, composite rotors represent an efficient and environmentally friendly option for energy storage. They have already been applied successfully for voltage control on electrical rail networks and for bridging power in backup UPS systems, but lately they have also proven useful for grid-scale frequency regulation. For flywheels to be deployed on a wider scale, t
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Alnaqi, Abdulwahab Ali. "Characterisation of coated lightweight brake rotors." Thesis, University of Leeds, 2014. http://etheses.whiterose.ac.uk/7265/.

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Numerical and experimental studies were undertaken using lightweight brake rotors to reduce vehicle weight and thereby improve fuel efficiency and vehicle emissions. Abaqus finite element and Matlab software were used to construct one dimensional (1D), two dimensional (2D) and three dimensional (3D) thermal models to investigate the general thermal performance of disc brakes to develop a valid method of reduced scale testing. Five small scale solid brake rotors were investigated experimentally: grey cast iron, wrought aluminium alloy (6082), the same 6082 alloy with an alumina surface layer ap
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Bennetts, Alexander. "Aerodynamic interactions of non-planar rotors." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/aerodynamic-interactions-of-nonplanar-rotors(ede657de-a7d8-43d2-a659-453f31c086c1).html.

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The aim of this thesis is to improve understanding of the effects of rotor-rotor interference on small scale rotor systems used on Micro Air Vehicles (MAVs). Previous research on rotor-rotor interactions has focused primarily on planar co-axial and tandem rotors of large scale rotorcraft. The work presented is distinct from prior research not only in its consideration of non-planar rotor systems, but also because of the lower Reynolds numbers and the use of fixed-pitch variable-speed propulsion systems. A design for a novel adjustable rotor interaction test-rig is presented along with a method
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GIRARDELLO, DETONI JOAQUIM. "Developments on Electrodynamic Levitation of Rotors." Doctoral thesis, Politecnico di Torino, 2012. http://hdl.handle.net/11583/2497116.

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Magnetic bearings are systems capable of supporting rotors in absence of mechanical contact. Among many advantages with respect to ball and roller bearings are the possibilities of operating at extremely high rotational speeds and free of maintenance. Nevertheless, classical active magnetic bearings (AMB) are costly systems and may suffer from reliability problems. The most common types of passive magnetic bearings (PMB) based on the use of permanent magnet and reluctance forces are robust and relatively cheap but are affected by an intrinsic stability problem related to negative stiffness. Th
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El, Hafidi Ali. "Analyse et identification du comportement dynamique de rotors." Besançon, 1989. http://www.theses.fr/1989BESA2026.

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L'analyse prévisionnelle et l'optimisation du comportement dynamique des machines tournantes, souvent régies par des opérateurs dissipatifs et non auto-adjoints, passent généralement par des simulations effectuées sur le modèle mathématique associe. Dans la première partie de ce mémoire, on développe deux méthodes permettant d'identifier les caractéristiques dynamiques de paliers fluides. La première utilise des solutions propres identifiées et la seconde exploite des réponses forcées dues aux balourds. L’amélioration et l'identifiable des caractéristiques des paliers est obtenue par le choix
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Galera, Larissa 1990. "Análise da influência das características geométricas de selos de fluxo aplicados a rotores." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263035.

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Orientador: Katia Lucchesi Cavalca Dedini<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica<br>Made available in DSpace on 2018-08-24T00:13:00Z (GMT). No. of bitstreams: 1 Galera_Larissa_M.pdf: 7841610 bytes, checksum: b4caff2b3c8de6cf54d4ef086fd47585 (MD5) Previous issue date: 2013<br>Resumo: A análise dinâmica de rotores visa prever o comportamento e identificar desvios caracterizados por meio das respostas dinâmicas do conjunto, fornecendo indicadores de mau funcionamento ou diagnóstico de falhas, e minimizando os riscos de paradas imprevistas
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41

Gill, Jason W. "The design of a rotor blade test facility." Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4203.

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Thesis (M.S.)--West Virginia University, 2005.<br>Title from document title page. Document formatted into pages; contains viii, 93 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 80-81).
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Rawal, Dharamendra Niranjan. "Study of the effect of sensor position on the forced response characteristics of rotors with active magnetic bearings." Thesis, Virginia Tech, 1990. http://hdl.handle.net/10919/41604.

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The need for better performance of turbomachinery with active magnetic bearings has necessitated a study of such systems for accurate prediction of their vibrational characteristics. This research presents a modification of existing transfer matrix methods for rotor analysis, to predict the response of rotor systems with active magnetic bearings. The position of the magnetic bearing sensors is taken into account and the effect of changing sensor position on the vibrational characteristics of rotor systems is studied. The modified algorithm is validated using a simpler modified Jeffcott model.
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43

Collins, Kyle Brian. "A multi-fidelity framework for physics based rotor blade simulation and optimization." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26481.

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Thesis (Ph.D)--Aerospace Engineering, Georgia Institute of Technology, 2009.<br>Committee Co-Chair: Dr. Dimitri Mavris; Committee Co-Chair: Dr. Lakshmi N. Sankar; Committee Member: Dr. Daniel P. Schrage; Committee Member: Dr. Kenneth S. Brentner; Committee Member: Dr. Mark Costello. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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Riley, Troy M. "Aeroacoustics and Fluid Dynamics Investigation of Open and Ducted Rotors." University of Cincinnati / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1627667464605408.

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45

Mazer, Thiago Tazinazzo. "Cálculo em elementos finitos das frequências naturais dos modos de flexão de uma linha de eixo de unidade geradora hidráulica em escala /." Guaratinguetá, 2016. http://hdl.handle.net/11449/136448.

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Orientador: Mauro Hugo Mathias<br>Banca: José Elias Tomazini<br>Banca: Carlos D'Andrade Souto<br>Resumo: A evolução das unidades geradoras hidráulicas é constante, sempre visando a redução de custos, mantendo ou melhorando os fatores de desempenho já alcançados. Em consequência disso têm-se em geral máquinas menores, com velocidade de rotação mais elevada e maiores solicitações mecânicas, além de estruturas com massa otimizada e consequentemente mais flexíveis. Nesse contexto, conhecer o comportamento dinâmico dos rotores das turbinas hidráulicas e ter a capacidade de simulá-los com precisão p
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46

Ramalho, Denise Alves. "Estudo da influência dos perfis de solo em sistemas rotor-mancais-fundação." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264217.

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Orientadores: Katia Lucchesi Cavalca Dedini, Euclides de Mesquita Neto<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica<br>Made available in DSpace on 2018-08-17T09:33:08Z (GMT). No. of bitstreams: 1 Ramalho_DeniseAlves_D.pdf: 3277236 bytes, checksum: d90e15781524b19a49afda1e9c94e31d (MD5) Previous issue date: 2010<br>Resumo: Nas últimas três décadas houve um desenvolvimento notável em métodos e tópicos de pesquisa a respeito da análise da dinâmica de máquinas rotativas. Um dos tópicos que têm atraído a atenção de pesquisadores é a interação de máquin
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47

Akers, Walter John. "Flourescent molecular rotors as mechanosensors in biofluids." Diss., Columbia, Mo. : University of Missouri-Columbia, 2005. http://hdl.handle.net/10355/4114.

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Thesis (Ph. D.)--University of Missouri-Columbia, 2005.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on October 19, 2007) Vita. Includes bibliographical references.
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Gustavsson, Rolf. "Modelling and analysis of hydropower generator rotors /." Luleå, 2005. http://epubl.luth.se/1402-1757/2005/62.

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49

Velkova, Cvetelina Vladimirova. "Modélisation du comportement dynamique des rotors d'hélicoptères." Phd thesis, Ecole nationale supérieure d'arts et métiers - ENSAM, 2013. http://pastel.archives-ouvertes.fr/pastel-00997268.

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Modélisation du comportement dynamique des rotors d'hélicoptèresL'objectif de la thèse est l'étude et la modélisation du comportement dynamique et aérodynamique du rotor de l'hélicoptère en considérant à la fois les forces d'inertie et les forces aérodynamiques et en tenant compte des déformations élastiques des pales. L'algorithme de couplage proposé permet d'effectuer le calcul transitoire avec échange de données entre les solveurs fluide et structure à chaque pas de temps.La particularité de cette étude est l'utilisation du modèle aérodynamique de la ligne active, qui représente les forces
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50

Daneshmandi, Mohsen. "Self-induced flow circulation by enclosed rotors." Thesis, University of Southampton, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261555.

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