Investigation of the dynamic characteristics of a dual rotor system and its start-up simulation based on finite element method

被引：38

作者：

Fei, Zhong-xiu ^{[1
]}

Tong, Shui-guang ^{[2
]}

Wei, Chao ^{[3
]}

机构：

[1] Zhejiang Univ, Inst Chem Machinery Engn, Hangzhou 310027, Zhejiang, Peoples R China

[2] Zhejiang Univ, Mech Design Inst, Hangzhou 310027, Zhejiang, Peoples R China

[3] Zhejiang Univ, Inst Thermal Engn & Power Syst, Hangzhou 310027, Zhejiang, Peoples R China

来源：

JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE A | 2013年 / 14卷 / 04期

关键词：

Dual rotor system; Critical speed; Transient response; Finite element method (FEM); VIBRATION CONTROL;

D O I：

10.1631/jzus.A1200298

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Recently, the finite element method (FEM) has been commonly applied in the engineering analysis of rotor dynamics. Gyroscopic moments, rotary inertia, transverse shear deformation and gravity can be included in computational models of rotor-bearing systems. In this paper, a finite element model and its solution method are presented for the calculation of the dynamics of dual rotor systems. A typical structure with two rotor shafts is discussed and the procedure for obtaining the coupling motion equations of the subsystems is illustrated. A computer program is developed to solve critical speeds and to simulate the transient motion. The influence of gyroscopic moments on co-rotation and counter-rotation is analyzed, and the effect of the speed ratio on critical speed is studied. The dynamic characteristics under different conditions of increasing speed during start-up are demonstrated by comparison with transient nodal displacements. The presented model provides a complete foundation for further investigation of the dynamics of dual rotor systems.

引用

页码：268 / 280

页数：13

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