PRESSURE MEASUREMENTS FOR TRANSLATING HYDROSTATIC THRUST BEARINGS

Authors

  • Aaron B. Crabtree Mechanical and Aerospace Engineering Department University of Missouri – Columbia, Columbia, MO 65211
  • Noah D. Manring Mechanical and Aerospace Engineering Department University of Missouri – Columbia, Columbia, MO 65211
  • Robert E. Johnson The William States Lee College of Engineering University of North Carolina – Charlotte, Charlotte, NC 28223

Keywords:

hydrostatic thrust bearing, pressure profile, bearing tilt, Reynolds’s Lubrication equation

Abstract

The objective of this study is to take insitu measurement of the pressure profile that exists between a sliding thrust bearing and a stationary thrust surface. Using a two-dimensional model of the bearing and the classical one-dimensional Reynolds equation, the experimental results are explained and the minimum fluid film thickness and the tilt angle of the bearing are numerically determined. In this work, it is shown that the bearings tilt into the leading edge of the bearing and that the minimum fluid-film thickness at the leading edge of the bearing is on the order of the surface roughness. This work provides fundamental insight into the problem of metal-to-metal contact for thrust bearings.

Downloads

Download data is not yet available.

Author Biographies

Aaron B. Crabtree, Mechanical and Aerospace Engineering Department University of Missouri – Columbia, Columbia, MO 65211

Aaron B. Crabtree Born 1977, he was raised on a small family farm outside Odessa, Missouri, USA. Aaron received his B.S. in Agricul-tural Engineering and Mechanical Engi-neering in 2000, and his M.S. in Mechan-ical Engineering in 2003, all three from the University of Missouri – Columbia. His research interests are in off-highway machine & component test, sensor devel-opment, and hydraulic system & compo-nent development. He is currently a Ph.D. candidate at the University of Missouri - Columbia.

Noah D. Manring, Mechanical and Aerospace Engineering Department University of Missouri – Columbia, Columbia, MO 65211

Noah D. Manring Born 1967 in Del Norte, Colorado, USA. Dr. Manring received his B.S. and B.A. degrees from Michigan State University, his M.S. degree from the University of Illinois at Urbana-Champaign, and his Ph.D. degree from Iowa State University. Dr. Manring is currently the James C. Dowell Professor of Mechanical Engi-neering at the University of Missouri - Columbia (UMC). Before joining the faculty at UMC, he worked for eight years in the off-highway mobile equipment industry. He holds ten US patents for innovations in the field of fluid power. As a professor, he has received research funding from Caterpillar, Inc., Festo Corp., and the National Fluid Power Association, among others, as well as the US Department of Education, the Nation-al Science Foundation, and various pri-vate donors. Dr. Manring currently serves as an associate editor of the International Journal of Fluid Power and the Journal of Dynamic Systems, Measurement and Control. He has done consulting work for several industrial firms including Moog Inc., FMC Wyoming Corp., Dennison Hydraulics, and Parker Hannifin. Dr. Manring is the recent author on a new textbook entitled, Hydraulic Control Systems, published by John Wiley & Sons.

Robert E. Johnson, The William States Lee College of Engineering University of North Carolina – Charlotte, Charlotte, NC 28223

Robert E. Johnson Dr. Johnson is originally from Hicksville, NY, received his B.S. degree from SUNY at Buffalo, and his M.S. and Ph.D. de-grees from Caltech. Dr. Johnson is cur-rently Dean of The William States Lee College of Engineering at The University of North Carolina at Charlotte. Before joining the faculty at UNC Charlotte, he worked for sixteen years in the Depart-ment of Theoretical and Applied Mechan-ics at the University of Illinois. He works in the area of fluid mechanics, material processing, metal forming, race car aero-dynamics and asymptotic methods. He is the author or coauthor on more that 70 archival journal articles, and has worked on numerous projects for the National Science Foundation, Alcoa and Caterpil-lar. Dr. Johnson serves on the Board of Governors for NC Polymer Center of Excellence and on the Board of Advisors for the Ben Craig Center, a business incubator in Charlotte.

References

Iboshi, N. and Yamaguchi, A. 1982, “Characteristics of a Slipper Bearing for Swash Plate Type Axial Piston Pumps and Motors (1st Report, Theoretical Analysis),” Bulletin of the JSME, Vol. 25 No. 210, pp. 1921-1930.

Iboshi, N. and Yamaguchi, A. 1983, “Characteristics of a Slipper Bearing for Swash Plate Type Axial Piston Pumps and Motors (2nd Report, Experi-ment),” Bulletin of the JSME, Vol. 26 No. 219, pp. 1583-1589.

Kazama, T. and Yamaguchi, A. 1993, “Optimum De-sign of Bearing and Seal Parts for Hydraulic Equipment,” Wear, Vol. 161, pp. 161-171.

Koc, E. and Hooke, C. J. 1992, “Slipper Balance in Axial Piston Pumps and Motors,” ASME Journal of Tribology, Vol. 114, pp. 766-772.

Koc, E. and Hooke, C. J. 1996, “Investigation into the Effects of Orifice Size, Offset and Overclamp Ratio on the Lubrication of Slipper Bearings,” Tribology International, Vol. 29 No. 4, pp. 299-305.

Manring, N. D. 2001. Predicting the required slipper hold-down force within an axial-piston swash-plate type hydrostatic pump. ASME International Me-chanical Engineering Congress and Exposition. New York, NY.

Manring, N.D. 2005. Hydraulic Control Systems. John Wiley & Sons. Holboken, New Jersey

Manring, N. D., Johnson, R. E., and Cherukuri, H.. 2002. The impact of linear deformations on station-ary hydrostatic thrust bearings. ASME Journal of Tribology, Technical Brief. 124:874-77.

Manring, N. D., Wray, C. L., and Dong, Z.. 2004. Experimental studies on the performance of slipper bearings within axial-piston pumps. ASME Journal of Tribology. 126:511-18.

Downloads

Published

2005-11-01

How to Cite

Crabtree, A. B., Manring, N. D., & Johnson, R. E. (2005). PRESSURE MEASUREMENTS FOR TRANSLATING HYDROSTATIC THRUST BEARINGS. International Journal of Fluid Power, 6(3), 19–24. Retrieved from https://journals.riverpublishers.com/index.php/IJFP/article/view/564

Issue

2005: Vol 06 Iss 3

Section

Original Article

Most read articles by the same author(s)