Abstract
Rotating machinery is widely used in civilian, aviation, aerospace, navigation, and other fields, and the stability behavior of the system dynamics is a prerequisite guaranteeing safe operation. In this paper, by using nonlinear dynamics theories, complicated transformation of the dynamic behaviors, Hopf bifurcation and 1■2 sub-harmonic resonance, was investigated on a rotor-seal system, and the conditions and mechanism of the dynamic behavior were obtained. Furthermore, the evolution of subharmonic resonance dynamics in the nonlinear rotor-seal system caused by self-excited vibration was analyzed. Based on the theoretical analysis, it is observed that the damping and stiffness parameters of the nonlinear rotor-seal system affect its system stability dynamics. Finally, numerical calculation verifies the results from the theoretical analysis. It is significant that the results of the theoretical analysis can explain the vibration behavior of the system and guide the structural design of the system in practical engineering.
| Original language | English |
|---|---|
| Pages (from-to) | 1704-1708 |
| Number of pages | 5 |
| Journal | Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University |
| Volume | 37 |
| Issue number | 12 |
| DOIs | |
| State | Published - 25 Dec 2016 |
| Externally published | Yes |
Keywords
- Critical speed
- Hopf bifurcation
- Multiscale method
- Muszynska's gas model
- Nonlinear rotor dynamics
- Rotor-seal system
- Self-excited vibration
- Sub-harmonic resonance
Fingerprint
Dive into the research topics of 'Study on the mechanism and transformation of the dynamic behavior in a nonlinear rotor-seal system'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver