Dynamic characteristics analysis of a vertical Jeffcott rotor-brush seal system

被引：2

作者：

Wei, Yuan ^{[1
]}

Ran, Xuhe ^{[1
]}

Sun, Tao ^{[1
]}

Liu, Shulin ^{[1
]}

Zhang, Hongli ^{[1
]}

Zhao, Dongfang ^{[1
]}

机构：

[1] Shanghai Univ, Sch Mechatron Engn & Automat, Shanghai, Peoples R China

来源：

JOURNAL OF THE CHINESE INSTITUTE OF ENGINEERS | 2022年 / 45卷 / 03期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Brush seal; nonlinear characteristics; vertical jeffcott rotor seal system; key parameters;

D O I：

10.1080/02533839.2022.2034049

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Turbomachinery is used widely in the energy and power industries. The configuration of the rotor system is one of the major concerns in rotating machinery. This paper describes the development of a mathematical dynamic model of the vertical Jeffcott rotor-brush seal system considering bristle interference. The effects of the main structural and operating parameters, such as the rotational speed, rotor mass, installation distance of the brush seal, and system damping, on the nonlinear dynamic behavior of the vertical system are analyzed. The bifurcation points, stability, and vibration responses of the system are investigated using axis orbits, time histories, Poincare maps, spectrum diagrams, bifurcation diagrams, and largest Lyapunov exponents. The results indicate that the amplitude of a vertical rotor system is smaller than that of a horizontal rotor system. The amplitude decreases as the installation distance and damping level increase. Reducing the rotor mass would enhances the stability of a rotor system.

引用

页码：245 / 254

页数：10