Dynamic characteristics analysis of a rotor system with two types of limiters

作者：Ma Hui^*; Wu Zhiyuan; Tai Xingyu; Wen Bangchun

来源：International Journal of Mechanical Sciences, 2014, 88: 192-201.

DOI：10.1016/j.ijmecsci.2014.08.001

• Rubbing
• Rotor system
• Limiter
• Finite element method
• Contact theory
• Dynamic characteristic

On the basis of Ref. Ma et al. (2013, Mechanical System and Signal Processing, 38, 137-153), the paper adopts a finite element (FE) method to investigate the complicated dynamic characteristics of a rotor system with two types of limiters under multilateral contact and friction conditions when the rubbing occurs between the rotor and limiters. The current study focuses on the effects of different stator/limiter forms on the vibration responses of the rotor-stator coupling system. First, FE models of the rotor with two types of limiters (four pin shaped stators and three pin shaped stators) are established. Then four and three point-point contact elements are used to simulate the rubbing between rotor and the two types of limiters. These contact elements describe the coupling of the rotor and the stators by the augmented Lagrangian method. Complicated vibration responses of the rotor system with two types of limiters under different rotating speeds are analyzed by spectrum cascades, rotor orbits, normal rubbing forces, amplitude spectrum, time-domain waveform and stator acceleration. The results show that the vibration responses of the rotor under the first type of limiter are more stable than those under the second type of limiter by observing the intensity and times of the rubbing, the magnitude of normal rubbing force and the regularity of frequency components caused by rubbing.

• 出版日期2014-11
• 单位东北大学