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1-17 of 17
Keywords: magnetic bearings
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Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Review Articles
J. Tribol. May 2023, 145(5): 050801.
Paper No: TRIB-22-1268
Published Online: January 19, 2023
... elastohydrodynamic lubrication hard disk drives lubricants magnetic bearings seals Magnetic torque M × H and viscous torque ( ω p − Ω ) in ferrofluid flow generate the rotational viscosity in ferrofluids [ 1 , 56 , 57 ]. In the presence of the magnetic field, the fluid and particles...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Review Articles
J. Tribol. April 2022, 144(4): 040801.
Paper No: TRIB-21-1155
Published Online: August 3, 2021
...P. Samanta; H. Hirani The present work portrays the latest review of the progressive advances in passive magnetic bearing (PMB) technology. PMB is an old technology with many encouraging properties. However, there are a number of inherent issues with design, analysis, and performance...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. July 2018, 140(4): 041704.
Paper No: TRIB-17-1233
Published Online: February 22, 2018
...Zhao Yulan; Liu Xingnan; Yang Guojun; Shi Zhengang; Zhao Lei The high-temperature gas-cooled reactor pebble-bed modular (HTR-PM) has been proposed by the Institute of Nuclear and New Energy Technology of Tsinghua University, in which the active magnetic bearings (AMBs) are equipped to support...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. March 2018, 140(2): 021901.
Paper No: TRIB-17-1087
Published Online: October 12, 2017
...K. P. Lijesh; Mrityunjay Doddamani; S. I. Bekinal Passive magnetic bearing's (PMB) adaptability for both lower and higher speed applications demands detailed and critical analysis of design, performance optimization, and manufacturability. Optimization techniques for stacked PMB published in recent...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. July 2017, 139(4): 041701.
Paper No: TRIB-16-1131
Published Online: April 4, 2017
...Yulan Zhao; Guojun Yang; Patrick Keogh; Lei Zhao Active magnetic bearings (AMBs) have been utilized widely to support high-speed rotors. However, in the case of AMB failure, emergencies, or overload conditions, the auxiliary bearing is chosen as the backup protector to provide mechanical supports...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Technical Briefs
J. Tribol. July 2017, 139(4): 044501.
Paper No: TRIB-16-1107
Published Online: March 29, 2017
..., a hybrid (hydrodynamic + rotation magnetized direction (RMD) configured magnetic) bearing has been proposed. The hybrid bearing consists of square magnets to repel the shaft away from the bearing bore. Load-carrying capacities of four configurations of hybrid bearings were determined. The results...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. May 2017, 139(3): 031101.
Paper No: TRIB-16-1091
Published Online: January 10, 2017
... = axial force, N H c = coercive force, A/m K z = axial stiffness, N/m μ r = relative permeability μ 0 = absolute magnetic permeability, H/m References [1] Sotelo , G. G. , Andrade , R. , and Ferreira , A. C. , 2007 , “ Magnetic Bearing Sets...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. July 2016, 138(3): 031105.
Paper No: TRIB-15-1298
Published Online: May 6, 2016
...Siddappa I. Bekinal; Soumendu Jana This work deals with generalized three-dimensional (3D) mathematical model to estimate the force and stiffness in axially, radially, and perpendicularly polarized passive magnetic bearings with “n” number of permanent magnet (PM) ring pairs. Coulombian model...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. October 2015, 137(4): 042201.
Paper No: TRIB-14-1304
Published Online: October 1, 2015
... 2015 25 05 2015 Passive magnetic bearing (PMB), made of high remanence rare earth permanent magnets, is brittle in nature; therefore, precautions must be taken to reduce the chances of vibration transmitting to the permanent magnets. In the present work, a rotation magnetized direction (RMD...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. January 2016, 138(1): 011102.
Paper No: TRIB-14-1307
Published Online: August 14, 2015
...Yulan Zhao; Guojun Yang; Zhengang Shi; Lei Zhao The auxiliary bearing is applied to provide mechanical uphold for the rotational dropping rotor when contact event happens due to the active magnetic bearing (AMB) failure emergencies. During the rotor drop process, the auxiliary bearing will endure...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Technical Briefs
J. Tribol. April 2015, 137(2): 024502.
Paper No: TRIB-14-1211
Published Online: April 1, 2015
.... Bearing design Magnetic bearings Active magnetic bearings (AMBs), made of eight poles as shown in the Fig. 1( a ) , find their wider usage in flywheel energy storage systems [ 1 ], turbomolecular vacuum pump [ 2 ], artificial heart blood pump [ 3 ], etc., due to their built-in fault diagnostics...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. January 2015, 137(1): 011103.
Paper No: TRIB-14-1100
Published Online: October 6, 2014
... have been developed for design and optimization of radial axial polarized passive magnetic bearing (PMB) with single layer for facilitating easy and quick solution, obviating the need of costly software. Seven design variables: eccentricity, rotor width, stator width, rotor length, stator length...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 2008, 130(2): 021102.
Published Online: April 22, 2008
...Antti Kärkkäinen; Marlene Helfert; Beat Aeschlimann; Aki Mikkola Active magnetic bearings present a technology that has many advantages compared to traditional bearing concepts. Active magnetic bearings, however, require retainer bearings in order to prevent damages in the event of a component...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 2008, 130(2): 021101.
Published Online: March 3, 2008
...M. Saint Raymond; M. E. F. Kasarda; P. E. Allaire Rotors supported by active magnetic bearings (AMBs) can spin at high surface speeds with relatively low power losses. This makes them particularly attractive for use in flywheels for energy storage in applications such as electric vehicles...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. January 2007, 129(1): 143–152.
Published Online: June 27, 2006
...Patrick S. Keogh; Woon Yik Yong Under normal operation, a rotor levitated by magnetic bearings will rotate without making contact with any stator component. However, there are a number of circumstances that may lead to temporary or permanent loss of levitation. These include full rotor drop events...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. July 2004, 126(3): 519–526.
Published Online: June 28, 2004
... for publication in the ASME JOURNAL OF TRIBOLOGY . Manuscript received by the Tribology Division March 13, 2003 revised manuscript received September 18, 2003. Associate Editor: L. San Andre´s. 13 March 2003 18 September 2003 28 06 2004 magnetic bearings machine bearings lubrication...
Journal Articles
Journal:
Journal of Tribology
Publisher: ASME
Article Type: Technical Papers
J. Tribol. April 2002, 124(2): 406–413.
Published Online: June 1, 2001
...M. O. T. Cole; P. S. Keogh; C. R. Burrows The dynamic behavior of a rolling element bearing under auxiliary operation in rotor/magnetic bearing systems is analyzed. When contact with the rotor occurs, the inner race experiences high impact forces and rapid angular acceleration. A finite element...