Nonlinear dynamic behavior of a water-lubricated hybrid bearing-rotor system

Author

Xianzhi Xiong ; Lin Wang ; Hua Xu

Author_Institution

Key Lab. of Educ. Minist. for Modern Design & Rotor-Bearing Syst., Xi´an Jiaotong Univ., Xi´an, China

fYear

2013

fDate

July 30 2013-Aug. 2 2013

Firstpage

274

Lastpage

278

Abstract

In this study, the stability analysis is carried out on a water-lubricated hybrid bearings used as the support of a high-speed motorized spindle. A two-dimension finite element method considering turbulence effect has been developed to solve the nonlinear oil film force. This paper mainly studies the influence of the water supply pressure, rotating speed, and unbalance mass on the axis orbit of the rotor-bearing system. The results of the axis orbit indicate that the effect of nonlinear for the hybrid bearing studied in this paper is not obvious, and the bearing-rotor system can run safely and stably at the rotating speed not more than 30000 rpm.

Keywords

finite element analysis; lubrication; machine bearings; machine tool spindles; rotors; high- speed motorized spindle; nonlinear dynamic behavior; nonlinear oil film force; rotating speed; stability analysis; turbulence effect; two-dimension finite element method; water supply pressure; water-lubricated hybrid bearing-rotor system; Equations; Films; Mathematical model; Nonlinear dynamical systems; Orbits; Rotors; Stability analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Assembly and Manufacturing (ISAM), 2013 IEEE International Symposium on

Conference_Location

Xi´an

Print_ISBN

978-1-4799-1656-6

Type

conf

DOI

10.1109/ISAM.2013.6643454

Filename

6643454