Influence of orifice distribution on the characteristics of Elastic Ring Squeeze Film Dampers for Flywheel Energy Storage System

Author

Xu Yongxiang ; Chen Xiao ; Zou Jibin ; Qi Wenjuan

Author_Institution

Sch. of Electr. Eng. & Autom., Harbin Inst. of Technol., Harbin, China

fYear

2012

Firstpage

1

Lastpage

6

Abstract

This paper analyses the influence of orifice distribution on the damping characteristics of Elastic Ring Squeeze Film Dampers (ERSFD) for Flywheel Energy Storage System (FESS). Finite element method is employed to calculate the oil-film force of the ERSFD with different orifice distribution. The relationship of the oil-film force versus the orifice location in both axial and circumferential direction is drawn. The principle for the optimum orifice location is summarized, verified via varying the orifice radius. It is shown that orifices with the optimum distribution can play the greatest role in adjusting the damping coefficient, providing guidelines for the design and application of ERSFD.

Keywords

finite element analysis; flywheels; orifices (mechanical); shock absorbers; vibration control; ERSFD; FEM; FESS; axial direction; circumferential direction; damping characteristics; elastic ring squeeze film dampers; finite element method; flywheel energy storage system; oil-film force; optimum orifice location; orifice distribution; orifice radius; Damping; Films; Flywheels; Force; Orifices; Shock absorbers;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Launch Technology (EML), 2012 16th International Symposium on

Conference_Location

Beijing

Print_ISBN

978-1-4673-0306-4

Type

conf

DOI

10.1109/EML.2012.6325126

Filename

6325126