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Relevant bibliographies by topics / Hydrodynamic journal bearings

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Academic literature on the topic 'Hydrodynamic journal bearings'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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Journal articles on the topic "Hydrodynamic journal bearings"

1

Hirani, H., and P. Samanta. "Hybrid (hydrodynamic + permanent magnetic) journal bearings." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 221, no. 8 (2007): 881–91. http://dx.doi.org/10.1243/13506501jet282.

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Survey of patents on bearings indicates the maturity of hydrodynamic and rapid development of magnetic bearings. Active magnetic bearings are costlier compared with permanent magnetic bearings. To understand the performance characteristics of permanent magnetic bearings, an experimental setup has been developed. Experimental studies on radial permanent magnetic bearings demonstrated the drawbacks, such as high axial thrust and low load capacity. This has led the authors to hybridize the permanent magnet with hydrodynamic technology and to explore the possibility of achieving the low starting t

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2

Yang, Jian Xi, Fa Yu Zhang, Jian Ting Liu, and Jian Fang Zhou. "Load-Carrying Capacity Analysis for Sinusoidal Surfaces Hydrodynamic Bearing." Advanced Materials Research 295-297 (July 2011): 1244–50. http://dx.doi.org/10.4028/www.scientific.net/amr.295-297.1244.

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To obtain a new method to improve hydrodynamic bearing carrying capacity, hydrodynamic journal bearing’s characteristics as well as the current study direction are analyzed. According to the calculation of general cylindrical hydrodynamic journal bearing, the mathematic model for sinusoidal surface hydrodynamic bearing’s carrying capacity is established. It is used to calculate, analyze and compare these two bearings’ carrying capacity with example. The bearing, which has the characteristic of sinusoidal surface, has stronger carrying capacity than general cylindrical hydrodynamic bearing. Wha

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3

Baumann, Katrin, and Hermann Freund. "Modelling and Simulation of Aerodynamic Cylindrical Bearings Using ANSYS Hydrodynamic Bearing Element Types." Vehicles 5, no. 3 (2023): 1118–32. http://dx.doi.org/10.3390/vehicles5030061.

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Modern power engine concepts and environmental restrictions demand oil-free lubrication of rotors, for example, by gas bearings. However, the stiffness and damping properties ruling the rotor’s dynamics are poorly documented for aerodynamic bearings and simple calculation methods are lacking. Based on the similarity between aerodynamic and hydrodynamic journal bearings, it is investigated to what extent the hydrodynamic bearing element types of the commercial FE program ANSYS are also suitable for air bearings. Within these elements, the compressibility of the gas is neglected. After verificat

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4

Wang, Chin-Cheng, and Chieh-Lin He. "Numerical study of a hydrodynamic journal bearing with herringbone grooves for oil leakage reduction." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 233, no. 3 (2018): 439–46. http://dx.doi.org/10.1177/1350650118785660.

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Hydrodynamic journal bearings and herringbone-grooved journal bearings were numerically analyzed using finite volume-based computational fluid dynamics software. Navier–Stokes equations were solved to describe pressure and velocity distributions in three dimensions. Values of the Sommerfeld number were calculated as a benchmark case for a hydrodynamic journal bearing. The predicted values of the Sommerfeld number are comparable to theoretical results from engineering tribology literature. For a hydrodynamic journal bearing, it is found that there is a positive correlation between the maximum p

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Diop, Khadim, Abdérafi Charki, Stéphane Champmartin, and Abdelhak Ambari. "Reliability of a Hydrodynamic Journal Bearing." Applied Mechanics and Materials 789-790 (September 2015): 342–52. http://dx.doi.org/10.4028/www.scientific.net/amm.789-790.342.

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Journal fluid bearings are widely used in industry due to their static and dynamic behavior and their very low coefficient of friction. The technical requirements to improve the new technologies design are increasingly focused on the indicators of dependability of systems and machines. Then, it is necessary to develop a methodology to study the reliability of bearings in order to improve and to evaluate their design quality. Few works are referenced in literature concerning the estimation of the reliability of fluid journal bearings. This paper deals with a methodology to study the failure pro

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6

Li, He, Yuxiang Hua, Qiquan Quan, Deen Bai, Yinchao Wang, and Zongquan Deng. "On the modeling of levitation force for ultrasonic journal bearings actuated by piezoelectric transducers." Journal of Intelligent Material Systems and Structures 29, no. 6 (2017): 1113–19. http://dx.doi.org/10.1177/1045389x17730918.

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Different from conventional hydrostatic or hydrodynamic journal bearings, an ultrasonic journal bearing provides carrying force by air squeeze film generated by high-frequency vibration of bearing bush surfaces. Detailed investigation indicates that studies on levitating force modeling based on fluid dynamics for ultrasonic journal bearings are rarely conducted, and the existing theoretical models generally neglect some significant contributors to levitating force such as gas inertia, surface topography, rarefaction effect, or boundary effect. A modified Reynolds-type equation considering thes

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7

Feng, N. S., and E. J. Hahn. "Vibration Characteristics of Hydrodynamic Fluid Film Pocket Journal Bearings." Advances in Acoustics and Vibration 2010 (December 27, 2010): 1–10. http://dx.doi.org/10.1155/2010/589318.

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Theoretical analyses of hydrodynamic fluid film bearings with different bearing profiles rely on solutions of the Reynolds equation. This paper presents an approach used for analysing the so-called pocket bearings formed from a combination of offset circular bearing profiles. The results show that the variation of the dynamic bearing characteristics with different load inclinations for the pocket bearings is less than that for the elliptic bearing counterpart. It is shown that the natural frequencies as well as the critical speeds, and hence the vibrational behaviour, can also be significantly

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8

Wierzcholski, Krzysztof, and Andrzej Miszczak. "Load Carrying Capacity of Microbearings with Parabolic Journal." Solid State Phenomena 147-149 (January 2009): 542–47. http://dx.doi.org/10.4028/www.scientific.net/ssp.147-149.542.

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This paper presents the load carrying capacity (load capacity) and friction coefficient calculation of hydrodynamic HDD micro-bearing with parabolic profile of journal. One of the reason of such journal profile is that this journal profile contributes to the variation (an increase or decrease) the memory capacity of HDD drive operating on hydrodynamic micro-bearings. Such properties are very important and required in HDD micro-bearings. Up to now, the dynamic behavior of HDD spindle system with fluid micro-bearings was considered by Jang at al. [3]. They simulated an increase in the memory cap

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9

Navthar, Ravindra R., and N. V. Halegowda. "Experimental Investigation of Oil Film Thickness for Hydrodynamic Journal Bearings." Applied Mechanics and Materials 110-116 (October 2011): 2377–82. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.2377.

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Journal bearings are widely applied in different rotating machineries. These bearings allow for transmission of large loads at mean speed of rotation. These bearings are susceptible to large amplitude lateral vibration due to self-exited instability which is known as oil whirl or synchronous whirl. This oil whirl depends on many parameters such as oil film thickness, viscosity of lubricant, load on bearing, inertia of fluid etc. out of which oil film thickness plays an important role in operation of Journal bearings. As oil film thickness decreases metal to metal contact occurs this further ca

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10

Xiang, Guo, Yanfeng Han, Renxiang Chen, Jiaxu Wang, Xiaokang Ni, and Ke Xiao. "A hydrodynamic lubrication model and comparative analysis for coupled microgroove journal-thrust bearings lubricated with water." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 234, no. 11 (2019): 1755–70. http://dx.doi.org/10.1177/1350650119884798.

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The novelty of this study is to develop a hydrodynamic lubrication numerical model for coupled microgroove journal-thrust bearings (or coupled bearings) under water-lubricated condition. In the present model, the continuity of the hydrodynamic pressure and the fluid field (or coupled hydrodynamic effect) at common boundary is considered to reveal the mutual effect between the hydrodynamic behavior of the journal bearing and the thrust bearing. The lubrication performances of the coupled microgroove bearing with three bottom shapes, i.e., isosceles triangle, right triangle, and left triangle, a

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Dissertations / Theses on the topic "Hydrodynamic journal bearings"

1

Fitzgerald, Michael Kevin. "Heat transfer effects in hydrodynamic journal bearings." Thesis, University of Sheffield, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.722175.

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2

Wirsing, Thomas. "Effect of Axial Oscillation on Performance of Hydrodynamic Journal Bearings." Cleveland State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=csu1210683430.

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Philip, Croné. "Thermo-Elasto-Hydrodynamic lubrication modeling of Tilting Pad Journal Bearings." Licentiate thesis, Luleå tekniska universitet, Maskinelement, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-71105.

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The journal bearing is a critical machine element typically used to support rotating motion in high speed machinery. Through the generation of a hydrodynamic pressure in its thin lubricant film,which is usually in the order of 10-100μmthick depending on the diameter of the journal itself, the bearing is able to withstand large loads, both statically and dynamically, while having a very low rate of wear. It is of course essential that these components provide for a safe operation with as little wear and frictional losses as possible and it is therefore of great interest to develop simulation mo

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4

Cheung, J. O. "Transient response to flexible rotor-bearing systems subjected to combined unbalance and ground excitations." Thesis, Cranfield University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233345.

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Jakeman, R. W. "Analysis of dynamically loaded hydrodynamic journal bearings with particular reference to misaligned marine sterntube bearings." Thesis, Nottingham Trent University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233019.

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McIvor, James David Colin. "The analysis of dynamically loaded flexible journal bearings using higher-order finite elements." Thesis, King's College London (University of London), 1988. https://kclpure.kcl.ac.uk/portal/en/theses/the-analysis-of-dynamically-loaded-flexible-journal-bearings-using-higherorder-finite-elements(8cb1e4bc-41a7-4a66-bf72-5b5e93668509).html.

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An efficient and robust predictive technique has been developed for the analysis of dynamically loaded, flexible journal bearings using the finite element method. The work is in two parts. In the first part a fast predictive technique is developed for the analysis of dynamically loaded, rigid journal bearings. The finite element formulation of Reynolds equation is presented using both 3-node triangular and 8-node isoparamteric elements to model the lubricant film. The latter are shown to approximate the problem more closely using fewer nodal points and hence requiring fewer equations. The Gaus

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7

Swanson, Erik Evan. "Design and Evaluation of an Automated Experimental Test Rig for Determination of the Dynamic Characteristics of Fluid-Film Bearings." Diss., Virginia Tech, 1998. http://hdl.handle.net/10919/30727.

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Hydrodynamic journal bearings are applied in a wide range of both old and new, advanced rotating machinery designs. To maintain existing machinery, as well as to design new, state of the art machines, validated analytical models for these bearings are needed. This work documents the development and evaluation of an automated test rig for the evaluation of hydrodynamic journal bearings to provide some of the needed experimental data. This work describes the test rig in detail, including the results of experimental characterization of many of the test rig subsystems. Experimental data for a t

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8

Garcia, Mathieu. "Refrigerant-lubricated gas foil bearings : A thermo-hydrodynamic study (application to rigid bearings)." Thesis, Lyon, INSA, 2012. http://www.theses.fr/2012ISAL0133/document.

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Des études internes à Liebherr-Aerospace France, concernant la conception de nouveaux compresseurs lubrifiés par gaz réfrigérant, ont montré que dans des conditions de fonctionnement spécifiques, un mélange de vapeur et de liquide apparaît au sein du compresseur, au lieu d'une phase vapeur seule. De ce fait, le comportement des paliers à feuilles lubrifiés au gaz réfrigérant est étudié, y compris la possibilité d'un écoulement diphasique du lubrifiant. L'étude porte sur le comportement du lubrifiant uniquement, dans des conditions de fonctionnement qui sont celles des paliers à feuilles. L'app

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9

Zieliński, Piotr. "The influence of surface roughness and solid contaminants on the performance of hydrodynamic journal bearings." Thesis, Queensland University of Technology, 1997.

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10

Briggs, Maxwell H. "High Pressure Performance of Foil Journal Bearings in Various Gases." Case Western Reserve University School of Graduate Studies / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=case1344447241.

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Books on the topic "Hydrodynamic journal bearings"

1

Jean, Frène, ed. Hydrodynamic lubrication: Bearings and thrust bearings. Elsevier, 1997.

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2

United States. National Aeronautics and Space Administration. and U.S. Army Research Laboratory., eds. An efficient numerical procedure for thermodydrodynamic [sic] analysis of cavitating bearings. National Aeronautics and Space Administration, 1995.

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3

D, Vijayaraghavan, United States. National Aeronautics and Space Administration., and U.S. Army Research Laboratory., eds. Film temperatures in the presence of cavitation. National Aeronautics and Space Administration, 1995.

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4

D, Vijayaraghavan, United States. National Aeronautics and Space Administration., and U.S. Army Research Laboratory., eds. Film temperatures in the presence of cavitation. National Aeronautics and Space Administration, 1995.

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5

Brewe, David E. Effect of vibration amplitude on vapor cavitation in journal bearings. National Aeronautics and Space Administration, 1987.

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6

Brewe, David E. Study of journal bearing dynamics using three-dimensional motion picture graphics. National Aeronautics and Space Administration, Lewis Research Center, 1986.

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7

Godet, M., D. Berthe, J. Frene, D. Nicolas, and B. Degueurce. Hydrodynamic Lubrication: Bearings and Thrust Bearings. Elsevier Science & Technology Books, 1997.

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8

Wave journal bearing. National Aeronautics and Space Administration, 1995.

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Book chapters on the topic "Hydrodynamic journal bearings"

1

Hannon, William M., and Minel J. Braun. "Hydrodynamic Journal Bearings." In Encyclopedia of Tribology. Springer US, 2013. http://dx.doi.org/10.1007/978-0-387-92897-5_41.

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2

Adams, Maurice L. "Hydrodynamic Journal and Thrust Bearings." In Bearings. CRC Press, 2018. http://dx.doi.org/10.1201/b22177-7.

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3

Dmochowski, Waldemar M., Azzedine Dadouche, Michel Fillon, and Scan M. DeCamillo. "Hydrodynamic Tilting-Pad Journal Bearings." In Encyclopedia of Tribology. Springer US, 2013. http://dx.doi.org/10.1007/978-0-387-92897-5_46.

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4

Salazar, Jorge González, and Matías Reumay San-Martín. "Mechatronic Design of a New Fluid Pivot Journal Bearing." In Proceedings of the XV Ibero-American Congress of Mechanical Engineering. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-38563-6_64.

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AbstractThis work introduces a new sort of mechatronic hydrodynamic journal bearing for controlling vibrations in rotating machinery. This mechatronic design aims at improving an increasingly demanded bearing. The new mechatronic fluid pivot journal bearing is built upon a tilting pad journal bearing with a spherical pivot modified to inject pressurized oil into the pivot-pad gap. It is pursued that the bearing properties can be affected via controlling the pivot behaviour. The initial concept is presented followed by the design of each subsystem. An isothermal model is utilized. Results show

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5

Tůma, J., J. Šimek, J. Škuta, J. Los, and J. Zavadil. "Active Vibration Control of Hydrodynamic Journal Bearings." In Springer Proceedings in Physics. Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-2069-5_58.

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6

Zhang, Haijun, Changsheng Zhu, and Qin Yang. "Approximate Numerical Solution of Hydrodynamic Gas Journal Bearings." In Intelligent Robotics and Applications. Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-88518-4_29.

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7

Sivakumar, D., Suresh Nagesh, and K. N. Seetharamu. "Review of Thermal, Turbulent and Misalignment Effects on Hydrodynamic Journal Bearings." In Structural Integrity. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-91989-8_64.

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8

Gorasso, Luca, Liqin Wang, and Chiara Gorasso. "Geometrical Optimization of Hydrodynamic Journal Bearings with Validated Simulations and Artificial Intelligence Tools." 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_86.

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9

Fillon, M., and J. Frêne. "Numerical Simulation and Experimental Results on Thermo-Elasto-Hydrodynamic Tilting-Pad Journal Bearings." In Fluid Mechanics and Its Applications. Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0191-2_7.

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10

Malki, M., S. Boubendir, S. Larbi, and L. Boukhalkhal. "Hydrodynamic Lubrication Analysis in Self-lubricating Journal Bearings with Power Law Fluid Model." In Lecture Notes in Networks and Systems. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-60629-8_34.

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Conference papers on the topic "Hydrodynamic journal bearings"

1

Kim, Daejong, and Michael D. Bryant. "Hydrodynamic Performance of Meso Scale Gas Journal Bearings." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-62026.

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Recent advancement of micro machining technology enabled a fabrication of micro scale gas bearings for high performance miniature scale rotating machinery. This paper presents recent development of micro gas bearings fabricated through X-ray lithography, and suggests fabrication method of various meso scale (~mm) gas journal bearings, which include Rayleigh step gas journal bearings, pressure dam bearings, grooved pressure dam bearings. Also presented are simulations performed using orbit method for the suggested meso scale gas bearings with diameter of 2mm, length of 2mm, and clearance of 1~2

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2

Moroz, Leonid, Leonid Romanenko, Roman Kochurov, and Evgen Kashtanov. "Hydrodynamic Journal Bearings Optimization Considering Rotor Dynamics Restrictions." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-75790.

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In this study, optimal designs of hydrodynamic journal bearings for 13.5 MW induction motor prototype is developed based on the design of experiment approach and best sequences method which involves entire rotor-bearing system multidisciplinary simulations. These simulations consist of bearing hydrodynamic characteristics calculation and optimization and rotor dynamics analyses for a rotor-bearing system. The results of rotor dynamics analyses are taken into account as the constraints during optimization. Several journal bearings such as plain cylindrical with a different configuration of pock

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3

Bahzad, A., L. A. Abdel-Latif, and A. M. A. El-Butch. "Thermo-Hydrodynamic Analysis of Rough Journal Bearing." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95076.

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Temperature rise in modern hydrodynamic bearings reaches so high values and none of the engineering surface is perfectly smooth, therefore, the results obtained from the solution of Reynolds equation alone doesn’t give a true picture of the bearing behavior. In this work, the Reynolds equation is solved iteratively with the energy and heat transfer equations using finite difference technique and some roughness patterns have been assumed for the inner surface of the bearing and the outer surface of the journal to assess their effects on the bearing performance characteristics. A comparison betw

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Vekteris, Vladas, and Vadim Mokshin. "Investigation of the Hydrodynamic Behavior of New Construction Hydrodynamic Tilting-Pad Journal Bearing." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63182.

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The paper describes features of new construction pad-type (segmental) hydrodynamic bearing with mobile ring and results of investigations of this bearing. The researchers obtained complex method of interaction between the mobile ring and pads. Except the diagram of distribution of lubricant pressure on the surface of pad there are presented photos of the flowing lubricant in the bearing and graphs of trajectories of the rotor journal’s axis for various number of revolutions of the rotor. Presented results of investigations show high stability of new construction hydrodynamic bearings in case o

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Zachariadis, Demetrio C. "Axial Wedge Effect in Tilted Hydrodynamic Journal Bearings." In STLE/ASME 2006 International Joint Tribology Conference. ASME, 2006. http://dx.doi.org/10.1115/ijtc2006-12024.

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Theodossiades, S., and S. Natsiavas. "Geared Rotordynamic Systems on Hydrodynamic Bearings." In ASME 2001 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/detc2001/vib-21432.

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Abstract The present study investigates response and stability characteristics of gear-pair systems supported on oil journal bearings. The systems examined are driven by a motor providing a known torque, which is transferred to a load element through shafts and a gear-box. Here, the emphasis is placed on the gear-pair action, by assuming that the interconnecting shafts are rigid. This results in mechanical models with strongly nonlinear characteristics, whose long time dynamics are then effectively studied by applying appropriate numerical methodologies. In this way, useful information is obta

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7

Yang, Baisong, Jiale Tian, Jian Zhou, and Lie Yu. "A Generalized Solution on the Static Characteristics of Short Hydrodynamic Journal Bearings Using Harmonic Components." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65509.

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A theoretical analysis has been done to investigate the static performance of short hydrodynamic journal bearings with a generalized film thickness expression by a sum of Fourier series equation. The hydrodynamic film thickness was written into a summation of an infinite harmonic component of trigonometric function. Reynolds equation with short bearing theory is solved for steady-state operations. In this paper, the steady-state analysis of the generalized hydrodynamic bearing has been done and compared with some typical journal bearings with respect to their harmonic components of film thickn

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8

Moroz, Leonid, Leonid Romanenko, Roman Kochurov, and Evgen Kashtanov. "Load Influence on Hydrostatic Oil Film Journal Bearing Stiffness Characteristics." In ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/gt2020-15008.

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Abstract Hydrostatic bearings are widely used in industry, including aerospace and energy sectors. Hydrodynamic lubrication mechanism has been well studied analytically and experimentally and various types of bearings were developed to provide increasing operating speed, load capacity, stability and efficiency for modern rotating machines. Hydrostatically lubricated bearings have principal difference (in comparison with hydrodynamic bearings) and their characteristics have been an area of continued research. The goal of this work is to develop a robust algorithm, which can predict hydrodynamic

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"CALCULATION OF STATIC EQUILIBRIUM POSITION OF HYDRODYNAMIC JOURNAL BEARINGS." In Engineering Mechanics 2019. Institute of Thermomechanics of the Czech Academy of Sciences, Prague, 2019. http://dx.doi.org/10.21495/71-0-291.

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10

Jayaraj, V., and K. Srinivasan. "Experimental Investigation on PTFE Composites for Journal Bearings." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-43067.

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Journal bearings are widely used in many industrial applications. In journal bearings, under boundary lubricated conditions, the surfaces are considered to be technically dry or only slightly lubricated, so that the resistance to relative motion is due to the interaction between the highest asperities covered by the boundary film. A thin film of lubricating oil exists under this condition and there is partial metal to metal contact. The ideal situation where the two sliding surfaces are completely separated by a thin film of a viscous fluid or a gas is referred to as hydrodynamic lubrication.

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