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초록
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.
키워드
Finite-element method; Journal; Numerical analysis; Thrust; Bearings (structural); Disks (structural components); Finite element method; Mechanics; Reynolds equation; System stability; Critical mass; Damping coefficients; Degrees of freedom; Design considerations; Disk-spindle system; Perturbed equations; Rotor-bearing system; Stability analysis; Tilting motion; Thrust bearings
- 제목
- Stability analysis of a disk-spindle system supported by coupled journal and thrust bearings considering five degrees of freedom
- 저자
- Kim, Myunggyu; Jang, Gunhee; Kim, Hakwoon
- 발행일
- 2010-08
- 유형
- Article
- 권
- 43
- 호
- 8
- 페이지
- 1479 ~ 1490