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Relevant bibliographies by topics / Floating ring

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Academic literature on the topic 'Floating ring'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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Journal articles on the topic "Floating ring"

1

Bae, Joon-Hwan, Hyun-Duck Kwak, Sung-Jae Heo, Chang-Ho Choi, and Jong-Soo Choi. "Numerical and Experimental Study of Nose for LOx Floating Ring Seal in Turbopump." Aerospace 9, no. 11 (2022): 667. http://dx.doi.org/10.3390/aerospace9110667.

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Floating ring seals are widely used as a leakage control solution for turbomachines because they effectively operate with small clearances between the shaft and seal. The oxidizer pump of the 7 tonf liquid engine in the Korea Space Launch Vehicle II (KSLV-II) operates at high rotational speeds and under cryogenic conditions and has floating ring seals in the bearing cooling path to reduce leakages. In this study, we evaluated the frictional force acting on the nose of the floating ring in the oxidizer pump of the 7 tonf turbopump using numerical analysis, and we investigated the radial force o

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2

Peng, Liqiang, Huiping Zheng, and Zhanqun Shi. "Performance of Relative Clearance Ratio of Floating Ring Bearing for Turbocharger-Rotor System Stability." Machines 9, no. 11 (2021): 285. http://dx.doi.org/10.3390/machines9110285.

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The floating ring bearing (FRB) has been widely used in the field of high-speed rotating machinery such as turbochargers, aviation engines and so on, because of its simple structure, high efficiency and low power consumption. In order to obtain the best ratio between inter-oil clearance and shaft radius of the floating ring bearing necessitates the design reference of dimensional parameters for the design of floating ring bearings. This study, based on the transfer-matrix method, developed the dynamic model of the floating ring bearing-rotor system, and, using the Runge–Kutta analysis method f

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3

Li, Jiaqi, Jimin Ni, and Qiwei Wang. "Lubrication Analysis of Floating Ring Bearings Considering Floating Ring Heat Transfer." SAE International Journal of Fuels and Lubricants 9, no. 1 (2016): 14–22. http://dx.doi.org/10.4271/2016-01-0485.

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Xu, Fang, Zhi Gang Zhou, and Guo Rong Wang. "The Experimental Research on Friction and Wear of the New Type Rock Bit Floating Ring Journal Bearing." Applied Mechanics and Materials 120 (October 2011): 134–37. http://dx.doi.org/10.4028/www.scientific.net/amm.120.134.

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A new type rock bit floating ring journal bearing is designed to solve the current problems of large heat, excessive wear and short life of rock bit journal bearing in high-speed and heavy-loads conditions, and the experimental research on friction moment, temperature rising and friction loss of bearings are carried out in different parameters and different working conditions. The experimental results show that the floating ring speed is changed because of the influence of loads and cone speed, the mean speed of floating ring remains relatively constant when the loads and the cone speed are co

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Zhang, Congcong, Yongliang Wang, Rixiu Men, Hong He, and Wei Chen. "Dynamic behaviors of a high-speed turbocharger rotor on elliptical floating-ring bearings." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 233, no. 12 (2019): 1785–99. http://dx.doi.org/10.1177/1350650119849743.

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Floating-ring bearings are commonly used in automotive turbocharger applications due to their low cost and their suitability under extreme rotation speeds. This type of bearings, however, can become a source of noise due to oil whirl-induced sub-synchronous vibrations. The scope of this paper is to examine whether the concept of a floating-ring bearing with an elliptical clearance might be a solution to suppress sub-synchronous vibrations. A very time-efficient approximate solution for the Reynolds equation to the geometry of elliptical bearings is presented. The nonlinear dynamic behaviors of

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6

Dong, X., and Z. Zhao. "Experimental and Analytical Research on Floating-Ring Bearings for Engine Applications." Journal of Tribology 112, no. 1 (1990): 119–22. http://dx.doi.org/10.1115/1.2920215.

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This study deals with whether floating-ring journal bearings can be applied to engine bearings or not. The performance of floating-ring journal bearings with nonstationary load is analyzed. The main bearings of a S195 4-stroke diesel engine are replaced by floating-ring bearings and an experiment is carried out with success. After the engine starting, the ring lifts off when crankshaft speeds approach seven hundred and forty rpm. The ring maintains its rotation until crankshaft speeds decrease to two hundred rpm, during its deceleration to a stop. Once the ring lifts off it remains in normal w

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7

Guo, Hong, and Shao Lin Zhang. "Floating Ring Balance Analysis of Journal Floating Ring Hybrid Bearing in Turbulent Regime." Applied Mechanics and Materials 672-674 (October 2014): 1637–41. http://dx.doi.org/10.4028/www.scientific.net/amm.672-674.1637.

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An externally pressurized deep/shallow pockets hybrid journal floating ring bearing compensated by flat capillary restrictor which can meet the need of high speed rotating machinery is presented in this paper. Bases on turbulent flow theory, the equations governing the flow of inner and outer fluid film in the journal floating ring bearing are established. The control equations together with the pressure boundary condition and the restrictor flow equation are solved by using the Finite Element Method. The balance of floating ring is achieved by adjusting ring-to-shaft speed ratio, inner film r

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8

Dai, Yu Jie. "Hydrodynamic Characteristics of Dislocated Floating Ring Bearing with Different Eccentricities." Applied Mechanics and Materials 52-54 (March 2011): 152–55. http://dx.doi.org/10.4028/www.scientific.net/amm.52-54.152.

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For obtain the effect of floating ring radius R2 and floating ring velocity v2 on internal friction in dislocated floating ring with different eccentricities, the evolution of internal friction is simulated with boundary element method (BEM). Numerical simulation results show that internal friction increases with the increase of eccentricity. Internal friction rises linearly as the addition of floating ring velocity v2 if the eccentricity e and radius R2 are fixed. When the velocity v2 is a constant and the range of R2 is 0.75<R2<0.8, the internal friction increase enormously.

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9

Xia, Peng, Hui Chen, Zhansheng Liu, Wensheng Ma, and Baofeng Yang. "Analysis of whirling motion for the dynamic system of floating ring seal and rotor." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 233, no. 8 (2019): 1221–35. http://dx.doi.org/10.1177/1350650119829374.

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In turbopumps, the dynamic characteristics of the floating ring seal and rotor system are important, especially when the floating ring seal fails to lock up. To investigate the motion of the system with the unlocked floating ring seal, a dynamic model for the whirling system is established in this study. On the basis of the perturbation method, the nonlinear model is simplified into a steady whirling model superimposed with perturbation motion. The transient bulk flow model is improved to calculate the hydrodynamic force in the seal clearance. The results show that the floating ring seal is ab

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Park, Jeong Cheol, and Chien Ming Wang. "Hydrodynamic Behaviour of a Floating Polygonal Platform Centrally Placed within a Polygonal Ring Structure under Wave Action." Journal of Marine Science and Engineering 10, no. 10 (2022): 1430. http://dx.doi.org/10.3390/jmse10101430.

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In this paper, a semi-analytical method has been developed for the hydrodynamic analysis of a floating polygonal platform that is centrally placed within a floating polygonal ring structure under wave action. In view to understand the wave interactions inside the ring structure, the formulation considers two cases: when the platform and ring structure oscillate individually, and when they oscillate together under wave action. The polygonal shapes of the floating structures can be created from a parametric equation involving the cosine-type radial perturbation. The formulation and computer code

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Dissertations / Theses on the topic "Floating ring"

1

Vasco, Veronica. "Development of a cantilevered floating ring seal." Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.670019.

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Rivadeneira, Juan Carlos. "Predictions versus measurements of turbocharger nonlinear dynamic response." Texas A&M University, 2005. http://hdl.handle.net/1969.1/3723.

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The present work advances progress on the validation against measurements of linear and nonlinear rotordynamic models for predicting the dynamic shaft response of automotive turbochargers (TCs) supported on floating ring bearings. Waterfall spectra of measured shaft motions at the compressor and turbine ends of a test TC rotor evidences a complex response, showing synchronous (1X) and multiple subsynchronous frequencies along the entire operating speed range (maximum shaft speed ~ 65 krpm). Postprocessing of the raw test data by mathematical software allows filtering the synchronous and subsyn

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3

McLarnon, Christopher Norman. "The non-linear response of overhung rotors in floating ring bearings." Thesis, Heriot-Watt University, 1997. http://hdl.handle.net/10399/613.

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Nowald, Gerrit Edgar. "Numerical Investigation of Rotors in Floating Ring Bearings using Co-Simulation." Phd thesis, Studienbereich Mechanik, 2018. https://tuprints.ulb.tu-darmstadt.de/8186/1/20181112_Nowald_Dissertation.pdf.

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In this work, the nonlinear oscillation behavior of rotors in floating ring bearings is investigated numerically by means of transient run-up simulations. Non plain bearing designs are considered, which are commonly used in turbocharger applications. Furthermore, a mass-conserving cavitation model based on two-phase theory is employed, which is well suited for transient journal motions due to subsynchronous oscillations. Special axial boundary conditions are introduced, which better reflect open-ended bearings. In contrast to classical cavitation approaches, which assume degassing of dissolved

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MARQUES, RENNER GUILHERME DA COSTA. "STUDY OF FEASIBILITY IN REPLACING IN A CENTRIFUGAL PUMP THE STATIC WEAR RING BY A FLOATING WEAR RING." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2015. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=26598@1.

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PETRÓLEO BRASILEIRO S. A.<br>Grande parte dos sistemas de bombeamento existentes em refinarias é do tipo centrífuga com rotor em balanço. Alguns desses sistemas, que foram fabricadas antes da década de 80, ainda estão sendo usadas em refinarias no Brasil. Tipicamente estes equipamentos possuem rotores muito flexíveis. Isto ocorre devido ao alto valor da razão entre a distância entre mancais e o diâmetro do eixo e também por causa da substituição de gaxetas, que oferecem rigidez, por selos mecânicos. Como consequência, a resposta dinâmica destes equipamentos é sensível à pequenas variações da f

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Tian, Liang. "Investigation into nonlinear dynamics of rotor-floating ring bearing systems in automotive turbochargers." Thesis, University of Sussex, 2012. http://sro.sussex.ac.uk/id/eprint/43029/.

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As a high speed rotating device, a modern turbocharger rotor is commonly supported by floating ring bearings (FRBs), owing to their cost effectiveness for mass production and good damping performance. Thanks to the rapid growth of the power of the modern computer, rotordynamic analysis of turbocharger rotor-bearing systems becomes feasible, and it is closely related to the healthy operation and noise generation of turbochargers. The work in this thesis is concerned with the nonlinear rotordynamic modelling, simulation and analysis in the rotor-FRB system of turbochargers. The conventional line

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7

Leung, P. S. "An investigation of the dynamic behaviour of floating ring bearing systems and their application to turbogenerators." Thesis, University of Newcastle Upon Tyne, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384577.

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Nowald, Gerrit Edgar [Verfasser], Bernhard [Akademischer Betreuer] Schweizer, and Michael [Akademischer Betreuer] Schäfer. "Numerical Investigation of Rotors in Floating Ring Bearings using Co-Simulation / Gerrit Edgar Nowald ; Bernhard Schweizer, Michael Schäfer." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2018. http://d-nb.info/1171988168/34.

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Борщенко, Д. А. "Построение математической модели и компьютерный анализ динамики системы ротор - плавающее уплотнение". Thesis, Сумский государственный университет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/40474.

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Уплотнения с плавающими кольцами представляют собой совокупность торцового и щелевого уплотнений. Плавающее кольцо способно центрироваться относительно вала благодаря гидродинамическим силам в кольцевой щели. Последнее условие позволяет выполнять малые радиальные зазоры, тем самым снижая утечки. Плавающие кольца не вращаются, что резко уменьшает мощность на трение и снимается проблема их охлаждения.

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Michalec, Jiri, and Sylvie Niklasova. "Water uptake of hardwoods." Thesis, Växjö University, School of Technology and Design, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-960.

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<p>This study investigate water uptake in six different species of hardwood in tangential and radial section. Alder (Alnus glutinosa) and beech (Fagus sylvatika) represent semi-diffuse-porous hardwoods. Aspen (Popolus tremula) and birch (Betula pubescens) represent diffuse-porous group; oak (Quercus robur) and ash (Fraxinus excelsior) the ring-porous hardwoods. Spruce (Picea abies) was used as a reference sample.</p><p>Significantly higher water uptake was observed in the diffuse-porous and the semi-diffuse-porous group. Water uptake varied among the species, nevertheless tangential section wa

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Books on the topic "Floating ring"

1

Clarke, David Michael. A Theoretical study of the steady-state performance of floating ring journal bearings. 1988.

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2

Leung, Pak Sing. An Investigation of the dynamic behaviour of floating ring bearing systems and their application to turbogenerators. 1988.

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Book chapters on the topic "Floating ring"

1

Eling, Rob, Ron van Ostayen, and Daniel Rixen. "Multilobe Floating Ring Bearings for Automotive Turbochargers." In Proceedings of the 9th IFToMM International Conference on Rotor Dynamics. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-06590-8_67.

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2

Banakh, L. Y., A. N. Nikiforov, and G. Y. Panovko. "Some Features of Rotor Dynamics inside Floating Sealing Ring." In Solid State Phenomena. Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/3-908451-21-3.247.

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3

Maczkowski, Andrej, Matthias Bolliger, and John Francuz. "Wetland Dendrochronology: An Overview of Prehistoric Chronologies from the Southwestern Balkans." In Natural Science in Archaeology. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-52780-7_14.

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AbstractIn the past few decades, a number of prehistoric wetland archaeological sites have been detected in the south-central part of the BalkanPeninsula. However, only a few of them have been excavated. In this study, we discuss the characteristics of the wooden remains and selected tree-ring width chronologies from the archaeological sites of Sovjan, Ploča Mičov Grad and Dispilio. They represent the first prehistoric centennial and multi-centennial tree-ring chronologies from the region, covering various periods of the Neolithic, Chalcolithic and the Bronze Age. The dominant wood species uti

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4

Taranenko, Pavel, Oleg Sliva, and Elena Zadorozhnaya. "Dynamics Analysis of Flexible Rotor Supported by Floating Ring Bearings." In Proceedings of the 9th IFToMM International Conference on Rotor Dynamics. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-06590-8_90.

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5

Boyaci, Aydin, Wolfgang Seemann, and Carsten Proppe. "Bifurcation Analysis of a Turbocharger Rotor Supported by Floating Ring Bearings." In IUTAM Symposium on Emerging Trends in Rotor Dynamics. Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-94-007-0020-8_29.

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Arghir, Mihai, and Manh-Hung Nguyen. "Non-linear Analysis of Floating Ring Annular Seals: Stability and Impacts." In Proceedings of the 9th IFToMM International Conference on Rotor Dynamics. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-06590-8_166.

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Daniel, Christian, Elmar Woschke, and Steffen Nitzschke. "Simulation and Measurement of an Electric Driven Turbocharger Test Rig with Full Floating Ring Bearing." In Vibration Engineering for a Sustainable Future. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-48153-7_1.

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Boyaci, Aydin, and Bernhard Schweizer. "Nonlinear Oscillations of High-Speed Rotor Systems in Semi-Floating Ring Bearings." In Proceedings of the 9th IFToMM International Conference on Rotor Dynamics. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-06590-8_69.

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Zhao, Xinjun, Hong He, and Siyou Xu. "Influence of the Floating-Ring Bearing Parameters on Stability of Turbocharge Rotor-Bearing System." In Fluid Machinery and Fluid Mechanics. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-89749-1_68.

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Nitzschke, Steffen, Elmar Woschke, and Christian Daniel. "Application of Regularised Cavitation Algorithm for Transient Analysis of Rotors Supported in Floating Ring Bearings." In Mechanisms and Machine Science. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-99272-3_26.

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Conference papers on the topic "Floating ring"

1

Hsu, Chao-Yen, Mu-Heng Pi, and Tai-Cheng Lee. "An 800-MS/s 10b Pipelined ADC with Floating Ring Amplifiers." In 2024 21st International SoC Design Conference (ISOCC). IEEE, 2024. http://dx.doi.org/10.1109/isocc62682.2024.10762482.

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2

Que, Qianqian, Ce Wang, Yifan Wang, Mingquan Zeng, Hengyu Wang, and Kuang Sheng. "A Fast and Effective Design Method for Multi-Layer Floating Field Ring Optimization in SiC Floating Island Devices." In 2024 21st China International Forum on Solid State Lighting & 2024 10th International Forum on Wide Bandgap Semiconductors (SSLCHINA: IFWS). IEEE, 2024. https://doi.org/10.1109/sslchinaifws64644.2024.10835303.

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3

Lu, Albert, Yifan Wang, Nathan Yee, Yuhao Zhang, and Hiu Yung Wong. "Modeling of Ion-Implanted Floating Guard Ring in GaN Diode with Experimental Verification." In 2024 IEEE 11th Workshop on Wide Bandgap Power Devices & Applications (WiPDA). IEEE, 2024. https://doi.org/10.1109/wipda62103.2024.10773336.

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Kang, Zhaohui, Xingmin Ren, Zhi Wang, and Shangwen He. "Study on Influence of the Floating Ring in Floating Ring Bearing System under Turbulence State." In 2010 Second International Conference on Computer Modeling and Simulation (ICCMS). IEEE, 2010. http://dx.doi.org/10.1109/iccms.2010.486.

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Arghir, Mihai, Manh-Hung Nguyen, David Tonon, and Je´roˆme Dehouve. "Analytic Modelling of Floating Ring Annular Seals." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-46047.

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In order to avoid contact between the vibrating rotor and the stator annular seals are designed with a relatively large radial clearance (∼100 μm) and therefore have an important leakage. The floating ring annular seal is able to reduce the leakage flow rate by using a much lower clearance. The seal is designed as a ring floating on the rotor in order to accommodate its vibrations. The pressure difference between the upstream and the downstream chambers is pressing the nose of the floating ring (secondary seal) against the stator. The forces acting on the floating ring are the resultant of the

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6

ACKLEY, D. E., J. H. HLADKY, M. J. LANGE, et al. "Floating guard ring InP/InGaAs avalanche photodiodes with optimized ring structures." In Optical Fiber Communication Conference. OSA, 1990. http://dx.doi.org/10.1364/ofc.1990.thb5.

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Wang, Ce, Hengyu Wang, Linyang Huang, et al. "4H-SiC Floating Island JBS with Multi-Layer Floating Field Ring Termination." In 2023 20th China International Forum on Solid State Lighting & 2023 9th International Forum on Wide Bandgap Semiconductors (SSLCHINA: IFWS). IEEE, 2023. http://dx.doi.org/10.1109/sslchinaifws60785.2023.10399675.

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Arghir, Mihai. "Non-Linear Analysis of Floating Ring Annular Seals." In ASME/STLE 2012 International Joint Tribology Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ijtc2012-61147.

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The present paper is a continuation of a previous work [1] tackling the analysis of floating ring annular seals. A quasi-analytic solution of the floating ring motion was developed in [1] but its stability was not addressed. This stability problem of the floating ring driven by the uniform circular precession of the rotor is answered in the present work.

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Trippett, Richard J. "Measured and Predicted Friction In Floating-Ring Bearings." In SAE International Congress and Exposition. SAE International, 1986. http://dx.doi.org/10.4271/860075.

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10

Di´az, S. E., and R. Castro. "Non-Linear Description of Floating Ring Bearings Rotordynamics." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63799.

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Floating ring bearings are commonly used in automotive turbochargers for their low manufacturing costs. However, the strong non-linearity of this configuration prevents the use of traditional rotordynamic techniques to describe their behaivior, thus relegating its design process to a costly trial and error process. A numerical characterization of this non-linearity is hereby presented for a flexible rotor supported on two FRBs. Non-linear techniques such as Poincare´ and Bifurcation maps, along with traditional rotordynamic techniques, show ranges of periodic, quasiperiodic, and chaotic motion

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