Stability analysis of a disk-spindle system supported by coupled journal and thrust bearings considering five degrees of freedom

作者：Kim Myunggyu; Jang Gunhee^*; Kim Hakwoon

来源：Tribology International, 2010, 43(8): 1479-1490.

DOI：10.1016/j.triboint.2010.02.007

• Finite-element method
• Journal
• Numerical analysis
• Thrust

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.

• 出版日期2010-8