Stability analysis of a disk-spindle system supported by coupled journal and thrust bearings considering five degrees of freedom
- Authors
- Kim, Myunggyu; Jang, Gunhee; Kim, Hakwoon
- Issue Date
- Aug-2010
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Finite-element method; Journal; Numerical analysis; Thrust
- Citation
- TRIBOLOGY INTERNATIONAL, v.43, no.8, pp.1479 - 1490
- Indexed
- SCIE
SCOPUS
- Journal Title
- TRIBOLOGY INTERNATIONAL
- Volume
- 43
- Number
- 8
- Start Page
- 1479
- End Page
- 1490
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/174336
- DOI
- 10.1016/j.triboint.2010.02.007
- ISSN
- 0301-679X
- Abstract
- This paper investigates the stability of a disk-spindle system supported by coupled journal and thrust bearings considering the five degrees of freedom of a rotor-bearing system. The Reynolds equations and their perturbed equations of the coupled bearings were solved by FEM to calculate the stiffness and damping coefficients. The critical mass of the rotor-bearing system was determined by solving the linear equations of motion. As a result, the tilting motion was a major design consideration to determine the stability of the rotor-bearing system. Additionally, the stability without the tilting motion was overestimated, as compared to that with the tilting motion.
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