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An Investigation of Gas Foil Thrust Bearing Performance and its Influencing Factors

Dickman, Joseph Robert
http://rave.ohiolink.edu/etdc/view?acc_num=case1270153301

Abstract Details

2010, Master of Engineering, Case Western Reserve University, EMC - Mechanical Engineering.
Three identical open source foil gas thrust bearings are manufactured and tested from 0-40 kRPM against two PS400 coated runners, and the results are reported. The bearings have a stiffness that varies from 20,000 to 140,000 lb/in. A 30% variability in load capacity is found between bearings against the same runner and a 25% variability is found with one bearing run against different runners. Bearing torque is proportional to speed and increases linearly with load once the bearing is fully lifted off. Load capacity increases linearly with speed until thermal effects cause top foil distortions and thermal runaway. Reducing the number of pads decreases the load capacity proportional to the change in area, but helps thermally stabilize the bearing. Finally, a simple ramp bearing model, in combination with a couette flow model and beam deflection in the top foil is compared to the bearing performance.
Joseph M. Prahl, PhD (Advisor)
J. Iwan D. Alexander, PhD (Committee Member)
Paul Barnhart, PhD (Committee Member)
Chris Dellacorte, PhD (Committee Member)
Robert J. Bruckner, PhD (Committee Member)
Engineering; Mechanical Engineering
foil bearing; bearing; foil thrust bearing; performance data

Recommended Citations

Citations

  • Dickman, J. R. (2010). An Investigation of Gas Foil Thrust Bearing Performance and its Influencing Factors [Master's thesis, Case Western Reserve University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=case1270153301

    APA Style (7th edition)

  • Dickman, Joseph. An Investigation of Gas Foil Thrust Bearing Performance and its Influencing Factors. 2010. Case Western Reserve University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=case1270153301.

    MLA Style (8th edition)

  • Dickman, Joseph. "An Investigation of Gas Foil Thrust Bearing Performance and its Influencing Factors." Master's thesis, Case Western Reserve University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=case1270153301

    Chicago Manual of Style (17th edition)

case1270153301
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© 2010, all rights reserved.
This open access ETD is published by Case Western Reserve University School of Graduate Studies and OhioLINK.