| Issue |
MATEC Web Conf.
Volume 179, 2018
2018 2nd International Conference on Mechanical, Material and Aerospace Engineering (2MAE 2018)
|
|
|---|---|---|
| Article Number | 03012 | |
| Number of page(s) | 7 | |
| Section | Aerospace | |
| DOI | https://doi.org/10.1051/matecconf/201817903012 | |
| Published online | 26 July 2018 | |
Rotordynamic Characteristics Analysis for an aero-engine Low Pressure Rotor Rig Test Model
AECC Commercial Aircraft Engine Co., Ltd., South Lianhua Road 3998, 201108, Shanghai, China
a Corresponding author: songhy02@163.com
3D whole engine finite element model of a low pressure rotor rig test model is established in this paper. Rotorynamic characteristics are mainly analysed with three models, which include rotor model with static stiffness, rotor model with dynamic stiffness, and whole engine model. The calculation results were compared and discussed deeply. Rotordynamic characteristics of rotor model with static stiffness are similar with the rotor model with dynamic stiffness, but the latter may have additional resonance peaks caused by dynamic stiffness. Whole engine model, which can capture the modes of casing and coupling vibration between stator and rotor, may have more critical speeds than rotor model only. The unbalance response amplitude and phase angle of the whole engine model are different with the only rotor model, in the values and distributions of the peaks. The result of rotor model with dynamic stiffness is closed to the whole engine model than the rotor model with static stiffness. The peak values of the whole engine model are smaller than the only rotor model. Rotordynamic characteristics with whole engine model are more accurate than rotor model only, so it necessary to analyse rotordynamic characteristics with whole engine model in detail design stage.
© The Authors, published by EDP Sciences 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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