Comparison of Critical Speeds of a Rotor System with Different Types of Finite Elements

Hui Ma; Hao Zuo; Xing Yu Tai; Bang Chun Wen

doi:10.4028/www.scientific.net/AEF.2-3.711

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Comparison of Critical Speeds of a Rotor System with Different Types of Finite Elements

Abstract:

The critical speeds of all kinds of high-speed rotors must be calculated in project so that all rotors can work in the safe range of speeds and avoid resonance. A single-span-two-disc rotor system is investigated by using finite element method based on ANSYS. Natural frequencies are calculated by using beam, solid, mass, shell, beam-solid, beam-shell elements and critical speeds are obtained from Campbell diagram. Finally, the first and second critical speeds are measured by a test rig. Comparison of theoretical and experimental results is performed to assess the accuracy of different element combining forms.

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Periodical:

Advanced Engineering Forum (Volumes 2-3)

Pages:

711-716

DOI:

https://doi.org/10.4028/www.scientific.net/AEF.2-3.711

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Online since:

December 2011

Authors:

Hui Ma, Hao Zuo, Xing Yu Tai, Bang Chun Wen

Keywords:

Critical Speed, Finite Element, Modal Analysis, Rotor System

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