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Analysis on Response of Blades With Friction Damping Interconnection Using a New Friction Model FREE

[+] Author Affiliations
Zili Xu, Xinyi Li, Qingji Meng

Xi’an Jiaotong University, Xi’an, Shaanxi, People’s Republic of China

Paper No. 97-AA-019, pp. V001T11A001; 5 pages
doi:10.1115/97-AA-019
From:
  • ASME 1997 Turbo Asia Conference
  • ASME 1997 Turbo Asia Conference
  • Singapore, September 30–October 2, 1997
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7867-5
  • Copyright © 1997 by ASME

abstract

Blades with damper structures have been widely used in gas and steam turbines. Operation experience indicate that damper structures can reduce the dynamic stress of the blade effectively, so it is essential to predict the oscillating characteristics of damped blade accurately. In this paper, a modified Oden friction model, which can consider the difference between static friction and dynamic friction, for analyzing nonlinear friction damping, is presented and the dynamic equations of motion of blade system is given also. The response of blade group with 5 blades is analyzed using the model presented in this paper. Factors such as the placement of connectors, external exciting force frequency, and normal pressure that influence the blade vibration characteristic are studied. Some results available for reference have been obtained.

Copyright © 1997 by ASME
Topics: Friction , Damping , Blades
This article is only available in the PDF format.

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