This paper presents a new approach for modeling flexure-pivot journal bearings (FPJB) employing a three-dimensional (3D) elasto-hydro-dynamic (EHD) lubrication model. The finite element (FE) method is adopted for an analysis of the (1) pad-pivot dynamic behavior and the (2) fluid force. The isoviscosity Reynolds equation is utilized to calculate the fluid force acting on a flexure-pivot pad bearing and spinning journal. Computational efficiency is achieved utilizing modal coordinate transformation for the flexible pad-pivot dynamic analysis. Fluid film thickness plays a critical role in the solution of Reynolds equation and is evaluated on a node-by-node basis accounting for the pad and web deflections. The increased fidelity of the novel modeling approach provides rotating machinery designers with a more effective tool to analyze and predict rotor–bearing dynamic behavior.
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September 2017
Research-Article
Numerical Modeling and Analysis of Flexure-Pivot Tilting-Pad Bearing
Junho Suh,
Junho Suh
Mem. ASME
School of Mechanical Engineering,
Pusan National University,
Busan 46241, South Korea
e-mail: junhosuh@pusan.ac.kr
School of Mechanical Engineering,
Pusan National University,
Busan 46241, South Korea
e-mail: junhosuh@pusan.ac.kr
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Alan Palazzolo,
Alan Palazzolo
Fellow ASME
Department of Mechanical Engineering,
Texas A&M University,
College Station, TX 77840
e-mail: a-palazzolo@tamu.edu
Department of Mechanical Engineering,
Texas A&M University,
College Station, TX 77840
e-mail: a-palazzolo@tamu.edu
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Yeon-Sun Choi
Yeon-Sun Choi
Department of Mechanical Engineering,
Sungkyunkwan University,
Suwon 16419, South Korea
e-mail: yschoi@yurim.skku.ac.kr
Sungkyunkwan University,
Suwon 16419, South Korea
e-mail: yschoi@yurim.skku.ac.kr
Search for other works by this author on:
Junho Suh
Mem. ASME
School of Mechanical Engineering,
Pusan National University,
Busan 46241, South Korea
e-mail: junhosuh@pusan.ac.kr
School of Mechanical Engineering,
Pusan National University,
Busan 46241, South Korea
e-mail: junhosuh@pusan.ac.kr
Alan Palazzolo
Fellow ASME
Department of Mechanical Engineering,
Texas A&M University,
College Station, TX 77840
e-mail: a-palazzolo@tamu.edu
Department of Mechanical Engineering,
Texas A&M University,
College Station, TX 77840
e-mail: a-palazzolo@tamu.edu
Yeon-Sun Choi
Department of Mechanical Engineering,
Sungkyunkwan University,
Suwon 16419, South Korea
e-mail: yschoi@yurim.skku.ac.kr
Sungkyunkwan University,
Suwon 16419, South Korea
e-mail: yschoi@yurim.skku.ac.kr
Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received September 5, 2015; final manuscript received March 3, 2017; published online May 26, 2017. Assoc. Editor: Mihai Arghir.
J. Tribol. Sep 2017, 139(5): 051704 (13 pages)
Published Online: May 26, 2017
Article history
Received:
September 5, 2015
Revised:
March 3, 2017
Citation
Suh, J., Palazzolo, A., and Choi, Y. (May 26, 2017). "Numerical Modeling and Analysis of Flexure-Pivot Tilting-Pad Bearing." ASME. J. Tribol. September 2017; 139(5): 051704. https://doi.org/10.1115/1.4036275
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