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VAVCO - Rotating Machinery Books and Short Courses

Books and short courses on machinery vibration and rotordynamics, next BP short course is January 13-17, 2014

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VAVCO

VAVCO

5800 B●●●●●● Drive

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PAGE TITLE
VAVCO - Rotating Machinery Books and Short Courses | rotorvibes.com Reviews
<META>
DESCRIPTION
Books and short courses on machinery vibration and rotordynamics, next BP short course is January 13-17, 2014
<META>
KEYWORDS
1 rotordynamics
2 turbomachinery
3 vibration
4 bearings
5 seals
6 short course
7 books
8
9 coupons
10 reviews
CONTENT
Page content here
KEYWORDS ON
PAGE
damper seals,bearing dampers,internal friction,labyrinth seal leakage,energy storage flywheels,false instability,by bearings plus,vavco,austin,texas
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Apache/2.2.29 (Unix) FrontPage/5.0.2.2635
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VAVCO - Rotating Machinery Books and Short Courses | rotorvibes.com Reviews

https://rotorvibes.com

Books and short courses on machinery vibration and rotordynamics, next BP short course is January 13-17, 2014

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Principal investigator: Dr

http://www.rotorvibes.com/TRC_PDS.htm

VIBRATION DAMPER SEALS FOR TURBOMACHINERY. The Pocket Damper Seal (PDS) was invented at Texas A&M. Can produce either positive or negative stiffness, to tune the natural frequency of the machine as desired. High-pressure (up to 1000 psi) tests of PDS were recently carried out by Dr. Bugra. As compared to a labyrinth seal. Childs, D.W. and Vance, J.M., Short Course on “Annular Gas Seals and Rotordynamics”, 36. September 10-13, 2007. April 2007, pp. 365-374. B, and Vance, J.M., “The Influence...Shultz, R&#...

2

A Continuation Proposal for ROTORDYNAMIC EFECTS OF DAMPER SEALS

http://www.rotorvibes.com/TRC_Laby_Leak.htm

LABYRINTH SEAL LEAKAGE EXPERIMENTS WITH DIFFERENT BLADE PROFILES AND DIFFERENT PITCH. Recent experiments by Dr. Ahmed Gamal. Blades, and between the 3. Equation for mass flow is. Is the upstream pressure, P. Is the downstream pressure, A. Is the clearance flow area, and C. Is a discharge coefficient to be experimentally determined. The area A. Is the shaft radius and C. Is the radial clearance. Results and Conclusions from Dr. Gamal’s. Tests that were carried out to determine the effect of blade thicknes...

3

EFFECT OF SHRINK FITS ON THRESHOLD

http://www.rotorvibes.com/TRC_IF.htm

EFFECT OF INTERFERENCE FITS ON ROTORDYNAMICS. A recurring problem in rotordynamics is the whirl instability caused by internal friction in a built-up rotor. The work of Newkirk and Kimball (1924), Gunter (1966), Lund (1974), Black (1976) and others verified that rotors with shrink (or press) fits are susceptible to subsynchronous whirl instability once the rotor speed exceeds the first critical speed. Dr Vance and his graduate students at Texas A&M. Worked for a number of years to develop an improved cap...

4

EXPERIMENTAL EVALUATION OF METAL MESH AS A BEARING

http://www.rotorvibes.com/TRC_MM.htm

EXPERIMENTAL EVALUATION OF METAL MESH AS A BEARING DAMPER MATERIAL. Dr Vance and his graduate students at Texas A&M. Developed and tested wire mesh bearing dampesr. Imbalance response of a rotor test rig with and without a copper mesh bearing support. BH, Al- Khateeb. E, and Vance, J.M., Rotordynamic Bearing Dampers for Cryogenic Rocket Engine Turbopumps , AIAA Journal of Propulsion and Power. Vol 19, No. 4, July-August 2003, pp. 674-682. 99-GT-15), Volume 112, No 2, April 2000, pp. 326 329.

5

“False” Rotordynamic Instability Measurements

http://www.rotorvibes.com/False_Instabilities.htm

False Rotordynamic Instability Measurements. Methods to demarcate between the two were developed in studies conducted by Dr. Vance and Rahul Kar at. It was shown that orbit shape, frequency tracking, and agreement of sub-synchronous frequencies with known eigenvalues can be used as diagnostic tools. It was also shown that a change in synchronous phase angle produced by de-stabilizing cross coupled forces can be used as a definitive indicator of incipient instability. May 14-17, 2007,.

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