Author(s)

Jia Hequan, Liu Zongzheng, Yan Xiqiang, and Lan Xin

Corresponding Author

Jia Hequan

ABSTRACT

The dynamic model of the series complex rotor is established by focusing on the compressor shafting. Considering the excitation of the shafting frequency harmonics and the inter-harmonics of the motors, the rotor dynamics characteristics are calculated by means of transfer matrix method in DyRoBeS platform. The natural frequency and vibration mode of the shafting are obtained. And the shafting torsional vibration response of the harmonic excitation is analysed. In this paper, a simulation method for torsional vibration of complex shafting is formed, and the design principle of coupling for reducing the amplitude of torsional vibration of shafting is also proposed.

KEYWORDS

Compressor, shafting, rotor dynamics, torsional vibration