Performance Degradation Research of Combined Rotor Considering Rod Relaxation

DOI

10.2991/icmemtc-16.2016.179How to use a DOI?

Keywords

rod relaxation; combined rotor; degradation degree; contact interface; natural frequency.

Abstract

Considering that we have less knowledge of performance degradation mechanism of combined rotor, performance degradation characteristics of combined rotor were discussed, from the perspective of system performance degradation caused by structural damage. Firstly, dynamic features of combined rotor was analyzed which considering rod relaxation and interface contact effect, the relations that natural frequency change with time was obtained. Secondly, defining degradation degree parameter by relative decrease degree of frequency, degradation path was described through dealing with degradation data; degradation assessment for combined rotor was completed as well. Then, unbalance response analysis of combined rotor was conducted according to different degradation degree; degradation characteristics of combined rotor were obtained. Finally, an experimental study on the dynamic characteristics of combined rotor was taken, bending vibration frequency was tested through adjusting the preload of rod, and degradation path was obtained, it confirmed the reasonability of theoretical analysis. The results show that: degradation parameters of combined rotor have exponential distributions, and it has great effect on unbalance response amplitude.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Ailun Wang
AU  - Zhen Luo
PY  - 2016/04
DA  - 2016/04
TI  - Performance Degradation Research of Combined Rotor Considering Rod Relaxation
BT  - Proceedings of the 2016 3rd International Conference on Materials Engineering, Manufacturing Technology and Control
PB  - Atlantis Press
SP  - 911
EP  - 917
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmemtc-16.2016.179
DO  - 10.2991/icmemtc-16.2016.179
ID  - Wang2016/04
ER  -