Numerical Model for Collision Damping of Blades’ Tips

Xue Jin; Ming Zhi Zhang; Hong Wei Li; Xiao Mei Zhang

doi:10.4028/www.scientific.net/AMM.130-134.2349

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 130-134Numerical Model for Collision Damping of Blades’...

Numerical Model for Collision Damping of Blades’ Tips

Abstract:

In order to obtain the collision damping of blades’ tips characteristics, around a blades for a 300MW steam turbine, the COMBIN40 element of ANSYS was adopted. The collision damping among blades' tips is equivalent to a damping of spring and friction with a gap. Under the conditions of exciting force and rotating blade natural frequency ,the vibration of a harmonic response was analysed, the nonlinear impact damping of blade response characteristics and the vibration damping mechanism of collision was got.

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Periodical:

Applied Mechanics and Materials (Volumes 130-134)

Pages:

2349-2353

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.130-134.2349

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Online since:

October 2011

Authors:

Xue Jin, Ming Zhi Zhang, Hong Wei Li, Xiao Mei Zhang

Keywords:

Blades’ Tips, Collision Damping, COMBIN40, Prestressed

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