Analysis of Stiffness of Viscoelastic-Friction Damper for High-Speed Rotor System

Abstract:

To reduce the excessive vibration of a high-speed rotor system as it passes its critical speed, a viscoelastic-friction damper(VEFD) are introduced into the support. Its stiffness factor is analyzed. Results show, the stiffness factor decreases with the cone angle increasing among 55-80 degrees monotonically. And it is the same trend when the stiffness of the damping material ring decreases. In the case of friction coefficient among 0.1-0.5, the stiffness factor increases monotonically. So adopted a proper structure, suitably chosen the above parameters and the axial stiffness of the outer-ring, the damper can present appropriate stiffness.

• Periodical: Advanced Materials Research (Volumes 538-541)
• Pages: 768-772
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.538-541.768
• Online since: June 2012
• Authors: Wen Zhong Li, Fu Xiang Zhang
• Keywords: Damping, Friction, High-Speed Rotor System, Stiffness, Viscoelasticity

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