Tilting–pad journal bearings (TPJBs) are widely used in rotating machinery to support the rotors efficiently at elevated speeds under light/heavy loadings. Because of the importance of this machine component, many authors have published several theoretical and experimental studies, to evaluate the influence of clearance, lubricant temperature, oil flow-rate and thermal effects on behavior of TPJB. However, the investigations of the influence of loading direction on properties of TPJB are very limited. In bearing models as well as in experimental tests, the load is often assumed along the vertical direction only and the geometry of the bearing is the same for each pad, which corresponds to an axial symmetry of the bearing. This paper presents first a theoretical analysis of the influence of the load direction on both the static and the dynamic behavior of a five-pad TPJB with a non-uniform clearance: that is, the different bearing configurations in the range between load-on-pad (LOP) and load-between-pads (LBP) are investigated. Then, the analytical results are compared with experimental measurements. The tests were performed with a nominal diameter of 100 mm and a length–to–diameter ratio of 0.7, using a suitable test-rig, in which it is possible to apply the static load in any direction. The procedure for the estimation of the bearing geometry from experimental measurement of the non-uniform clearance profile is also described. The results show that the load direction has considerable effects on both the static and the dynamic characteristics of the TPJB. Besides, the influence of load directions is stronger on the dynamic characteristics of tilting pad bearing than on the static ones.
Skip Nav Destination
ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
August 2–5, 2015
Boston, Massachusetts, USA
Conference Sponsors:
- Design Engineering Division
- Computers and Information in Engineering Division
ISBN:
978-0-7918-5718-2
PROCEEDINGS PAPER
Behavior of a Tilting–Pad Journal Bearing With Different Load Directions
Phuoc Vinh Dang,
Phuoc Vinh Dang
Politecnico di Milano, Milan, Italy
Search for other works by this author on:
Steven Chatterton,
Steven Chatterton
Politecnico di Milano, Milan, Italy
Search for other works by this author on:
Paolo Pennacchi,
Paolo Pennacchi
Politecnico di Milano, Milan, Italy
Search for other works by this author on:
Andrea Vania,
Andrea Vania
Politecnico di Milano, Milan, Italy
Search for other works by this author on:
Filippo Cangioli
Filippo Cangioli
Politecnico di Milano, Milan, Italy
Search for other works by this author on:
Phuoc Vinh Dang
Politecnico di Milano, Milan, Italy
Steven Chatterton
Politecnico di Milano, Milan, Italy
Paolo Pennacchi
Politecnico di Milano, Milan, Italy
Andrea Vania
Politecnico di Milano, Milan, Italy
Filippo Cangioli
Politecnico di Milano, Milan, Italy
Paper No:
DETC2015-46598, V008T13A067; 10 pages
Published Online:
January 19, 2016
Citation
Dang, PV, Chatterton, S, Pennacchi, P, Vania, A, & Cangioli, F. "Behavior of a Tilting–Pad Journal Bearing With Different Load Directions." Proceedings of the ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 8: 27th Conference on Mechanical Vibration and Noise. Boston, Massachusetts, USA. August 2–5, 2015. V008T13A067. ASME. https://doi.org/10.1115/DETC2015-46598
Download citation file:
20
Views
Related Proceedings Papers
Related Articles
The Effect of Variable Viscosity on the Stability of Plain Journal Bearings and Floating-Ring Journal Bearings
J. of Lubrication Tech (October,1973)
Related Chapters
Unbalance
Fundamentals of Rotating Machinery Diagnostics
Interface with Rotating Equipment
Pipe Stress Engineering
Hydrodynamic Lubrication
Design of Mechanical Bearings in Cardiac Assist Devices