Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Chinese Journal of Construction Machinery》 2008-03
Add to Favorite Get Latest Update

Coupled vibration analysis on nonlinear rotor-case-sealed rubbing system

YIN Yu-feng1,YAO De-chen1,WANG Song-lei2 (1.School of Machinery & Electronics Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;2.Wuxi Branch of Jiangsu Province Special Equipment Safety Supervision Inspection Institute,Wuxi 214174,China)  
With the structural parameter enhancement of rotary machinery,the airflow-excited force imposed on the rotor will significantly increase. Pertaining to the rotor-case-sealed rubbing system,a coupled dynamical equation is established using the Muszynska non-linear sealed force model. Accordingly,the motional properties of rubbing rotor are analyzed based on physical and structural parameters of labyrinth sealing. As a result,it is found that this system possesses various nonlinear dynamical inherences. In addition,the airflow-excited force can significantly restrain the quasi-periodical motion of rubbing rotor. Furthermore,the major sealed structural parameters greatly affect the system stability,whereas the dynamic stability can be improved through adjusting sealing parameters.Finally,this approach provides a method for theoretical design and dynamic fault diagnosis on rotary machinery.
【Fund】: 山西省自然科学基金资助项目(2006011062)
【CateGory Index】: TH113
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved