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Keywords: machine bearings
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Journal Articles
Article Type: Research Papers
J. Vib. Acoust. April 2012, 134(2): 021018.
Published Online: January 26, 2012
... elastic constants force feedback force measurement Lyapunov methods machine bearings magnetic bearings nonlinear acoustics rotors stators structural acoustics vibrations Literature on analysis and prediction of vibration behavior in nonlinear rotor-bearing systems is now extensive. Some...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. December 2011, 133(6): 061012.
Published Online: November 28, 2011
... influences the dynamic behavior of the machine. The rotor motions’ coupling due to combi-bearing changes the system’s natural frequencies and vibration modes. 27 03 2011 13 07 2011 14 07 2011 28 11 2011 28 11 2011 angular velocity elastic constants hydrodynamics machine...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. December 2011, 133(6): 061006.
Published Online: October 12, 2011
... equilibriums. 28 01 2010 11 03 2011 12 10 2011 machine bearings rotors structural acoustics temperature distribution vibrations rotor bearing Morton Effect instability mid-span Using an assumption of isotropic linear bearings, the mechanism of the Morton Effect...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. December 2011, 133(6): 061004.
Published Online: October 4, 2011
... 11 03 2011 04 10 2011 04 10 2011 damping machine bearings rotors structural acoustics thermal stability vibrations rotor bearing Morton Effect instability mid-span Since Newkirk found “oil film whirl” in 1925 [( 1 )], the instability of rotor-hydrodynamic...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. April 2011, 133(2): 021005.
Published Online: March 1, 2011
... 01 03 2011 01 03 2011 abrasion elastic constants impact (mechanical) lubrication machine bearings mechanical contact mechanical guides nonlinear estimation rotors stators vibration control In rotating machinery, the system may be damaged when the rotor contacts...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. April 2011, 133(2): 021004.
Published Online: March 1, 2011
... currents electrodynamics machine bearings structural acoustics eddy current induction bearing rotordynamics stability electromechanical interaction The principle of electrodynamic bearings (EDBs) relies on the motion of a conductor in a magnetic field. The resulting variation...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. October 2010, 132(5): 051009.
Published Online: August 26, 2010
...-4787 , 118 ( 1 ), pp. 190 – 200 . 10.1115/1.2837077 27 06 2009 28 01 2010 26 08 2010 26 08 2010 damping eigenvalues and eigenfunctions elastic constants frequency response machine bearings modal analysis reduced order systems shafts state-space methods...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. October 2010, 132(5): 051008.
Published Online: August 20, 2010
... demonstrating the method. 04 08 2009 04 03 2010 20 08 2010 20 08 2010 machine bearings rotors shafts structural acoustics vibrations It has been known for many years that thermal temperature gradients across a rotor can alter the amplitude and phase of synchronous...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. August 2010, 132(4): 041012.
Published Online: July 15, 2010
... automotive components bushings electromagnetic actuators engines hydraulic control equipment machine bearings solenoids vibration isolation vibrations An automobile engine, body, and chassis system is vulnerable to undesirable vibrations due to the inherent unbalance in the reciprocating...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. June 2010, 132(3): 031009.
Published Online: April 28, 2010
... emission testing active noise control machine bearings statistics acoustic emission condition monitoring denoising DWT SANC spectral subtraction rolling bearing Acoustic emission (AE) results from the release of energy in the form of transient elastic waves in the material ( 1...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. June 2010, 132(3): 031005.
Published Online: April 22, 2010
... vibration analysis marginal Hilbert spectrum electric machines fault diagnosis Hilbert transforms machine bearings rotors vibrations Kuo , R. J. , 1995 , “ Intelligent Diagnosis for Turbine Blade Faults Using Artificial Neural Networks and Fuzzy Logic ,” Eng. Applic. Artif...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. October 2009, 131(5): 051008.
Published Online: September 11, 2009
... of brackets mounted on an air-bearing spindle and a fluid-dynamic bearing spindle at various spin speeds. Measured Campbell diagrams agree well with the theoretical predictions. 20 01 2009 27 03 2009 11 09 2009 machine bearings rotors vibrations Rotary machines appear in many...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. October 2009, 131(5): 051006.
Published Online: September 10, 2009
.... Finally, the effect of the squeeze film gap on the transmitted force is analyzed, and the appropriate gap should be selected to cut the energy loss and to control vibration of the flywheel system. 14 08 2008 27 02 2009 10 09 2009 flywheels machine bearings magnetic bearings...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. August 2009, 131(4): 041012.
Published Online: June 18, 2009
.... signature extraction wavelet transform bearing diagnosis deconvolution feature extraction Fourier transforms machine bearings vibration measurement wavelet transforms 05 05 2008 07 04 2009 18 06 2009 Illustration of the generalized signal transformation scheme...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. April 2009, 131(2): 021007.
Published Online: February 18, 2009
... primary and secondary frequency branches from the waterfall plots agree well with those predicted analytically. 22 10 2007 29 06 2008 18 02 2009 discs (structures) Doppler measurement Fourier analysis gyroscopes machine bearings measurement by laser beam rotors softening...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. April 2009, 131(2): 021009.
Published Online: February 18, 2009
... on the twisting and thread friction torques variation under the preload of 13,928 N 12 11 2007 01 07 2008 18 02 2009 bending fasteners machine bearings shear strength torque vibrations vibration loosening self-loosening threaded fasteners Threaded...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. December 2008, 130(6): 061007.
Published Online: October 15, 2008
... (quasistatic conditions). Similar studies were performed in Ref. 8 . 07 02 2008 12 07 2008 15 10 2008 damping electromagnetic induction machine bearings magnetic bearings rotors stability eddy current induction bearing rotordynamics stability electromechanical...
Journal Articles
Article Type: Research Papers
J. Vib. Acoust. June 2008, 130(3): 031003.
Published Online: April 3, 2008
... , 129 ( 1 ), pp. 213 – 219 . Pissanetzky , S. , 1984 , Sparse Matrix Technology , Academic , London , Chaps. 1 and 9. 28 11 2006 17 10 2007 03 04 2008 compressors finite difference methods finite element analysis lubrication machine bearings nonlinear...
Journal Articles
Article Type: Technical Briefs
J. Vib. Acoust. April 2008, 130(2): 024502.
Published Online: January 30, 2008
... Technology for Condition Monitoring and Diagnosis of Rotating Machines: Bearings, Pumps, Gearboxes, Engines and Rotating Structures ,” Shock Vib. Dig. 0583-1024 10.1177/0583102405059054 , 38 ( 1 ), pp. 3 – 16 . Dowson , D. , and Higginson , G. R. , 1977 , Elasto-Hydrodynamic...
Journal Articles
Article Type: Technical Papers
J. Vib. Acoust. August 2007, 129(4): 484–494.
Published Online: April 15, 2007
... friction machine bearings fasteners vibrations clamps lubricating oils coatings self-loosening vibration loosening thread friction bearing friction fastener coating and lubrication There have been several studies on the self-loosening of threaded fasteners; most of them...