NDLI: Unbalance response analysis of the circumferential tie-rod combined rotor considering different support

Content Provider	IEEE Xplore Digital Library
Author	Guohui Xu Jian Zhou Haipeng Geng Mingjian Lu Wenjie Cheng
Copyright Year	2014
Description	Author affiliation: State Key Lab. of Strength & Vibration for Mech. Struct., Xi'an Jiaotong Univ., Xi'an, China (Guohui Xu; Jian Zhou; Haipeng Geng; Mingjian Lu; Wenjie Cheng)
Abstract	The combined circumferential tie rod rotor with the advantages of light weight, good cooling effect and easy assembly is widely used in gas turbines, especially in heavy-duty gas turbines. In this paper, a circumferential tie-rod combined rotor was investigated using two-dimensional finite element model and three-dimensional finite element model with ANSYS. The critical speed of the rotor were calculated by finite element method and compared with experiments. The dynamic characteristics and stability of rotor are closely related to the supporting performance of bearing. The unbalance response analysis of the tie-rod rotor supported by elliptical pad bearing and tilting pad bearings which are loads acting on the tile pad and loads acting between the tiling pads are investigated respectively. The results show that the critical speed calculates with two-dimensional finite element model is closer to the experimental value. Selecting different support bearing has a great influence on the critical speed and vibration amplitude of the rotor. In addition, the tie-rod rotor supporting by tilting-pad bearing have a better stability when the load is between the pads.
Starting Page	1323
Ending Page	1328
File Size	845273
Page Count	6
File Format	PDF
ISBN	9781479939787
e-ISBN	9781479939794
DOI	10.1109/ICMA.2014.6885891
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-08-03
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Rotors Vibrations Finite element analysis Turbines Shape Fasteners Force unbalance response tie-rod rotor tilting-pad bearings critical speed
Content Type	Text
Resource Type	Article

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