Vibration Analysis of Blade Under Multiple Composite Unsteady Excitations

In order to understand the effects of the unsteady aerodynamic excitations in complex flow field on blades, on the basis of the data obtained from the single-stage axial flow compressor, three kinds of exciting forms in the compressor had been studied, including the correlation between excitations...

Full description

Bibliographic Details
Main Authors: Licheng FANG, Shunming LI, Sai MA, Jiyong LI
Format: Article
Language:English
Published: IFSA Publishing, S.L. 2014-01-01
Series:Sensors & Transducers
Subjects:
Online Access:http://www.sensorsportal.com/HTML/DIGEST/january_2014/Vol_162/P_1770.pdf
id doaj-bdfa29e634694ee58f9894ebc700eacb
record_format Article
spelling doaj-bdfa29e634694ee58f9894ebc700eacb2020-11-25T01:02:24ZengIFSA Publishing, S.L.Sensors & Transducers2306-85151726-54792014-01-011621197202Vibration Analysis of Blade Under Multiple Composite Unsteady ExcitationsLicheng FANG0Shunming LI1Sai MA2Jiyong LI3College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaCollege of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaCollege of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaCollege of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China In order to understand the effects of the unsteady aerodynamic excitations in complex flow field on blades, on the basis of the data obtained from the single-stage axial flow compressor, three kinds of exciting forms in the compressor had been studied, including the correlation between excitations and responses in the upstream blade row wake, inlet distortion and rotating stall. Results showed that the response characteristics of the unsteady aerodynamic excitation could be extracted by adopting cross-relation method to distinguish effects of different exciting forms on blades. When many kinds of unsteady aerodynamic excitations co-existed, various exciting factors could be extracted from the mixed excitations through the cross-correlation analysis of excitation and response signals and by comparing with the characteristics of single aerodynamic excitation. Simulation data showed that the trail excitation energy on blades focused mainly on high frequency domains, the dynamic excitation of rotating stall centered on low frequency domains the excitation of the inlet distortion on blades existed in both high and low frequencies and amplitude at low frequency was larger than that at high frequency. http://www.sensorsportal.com/HTML/DIGEST/january_2014/Vol_162/P_1770.pdfAerodynamic excitation characteristicInlet distortionTrail excitationRotating stallCorrelation analysis.
collection DOAJ
language English
format Article
sources DOAJ
author Licheng FANG
Shunming LI
Sai MA
Jiyong LI
spellingShingle Licheng FANG
Shunming LI
Sai MA
Jiyong LI
Vibration Analysis of Blade Under Multiple Composite Unsteady Excitations
Sensors & Transducers
Aerodynamic excitation characteristic
Inlet distortion
Trail excitation
Rotating stall
Correlation analysis.
author_facet Licheng FANG
Shunming LI
Sai MA
Jiyong LI
author_sort Licheng FANG
title Vibration Analysis of Blade Under Multiple Composite Unsteady Excitations
title_short Vibration Analysis of Blade Under Multiple Composite Unsteady Excitations
title_full Vibration Analysis of Blade Under Multiple Composite Unsteady Excitations
title_fullStr Vibration Analysis of Blade Under Multiple Composite Unsteady Excitations
title_full_unstemmed Vibration Analysis of Blade Under Multiple Composite Unsteady Excitations
title_sort vibration analysis of blade under multiple composite unsteady excitations
publisher IFSA Publishing, S.L.
series Sensors & Transducers
issn 2306-8515
1726-5479
publishDate 2014-01-01
description In order to understand the effects of the unsteady aerodynamic excitations in complex flow field on blades, on the basis of the data obtained from the single-stage axial flow compressor, three kinds of exciting forms in the compressor had been studied, including the correlation between excitations and responses in the upstream blade row wake, inlet distortion and rotating stall. Results showed that the response characteristics of the unsteady aerodynamic excitation could be extracted by adopting cross-relation method to distinguish effects of different exciting forms on blades. When many kinds of unsteady aerodynamic excitations co-existed, various exciting factors could be extracted from the mixed excitations through the cross-correlation analysis of excitation and response signals and by comparing with the characteristics of single aerodynamic excitation. Simulation data showed that the trail excitation energy on blades focused mainly on high frequency domains, the dynamic excitation of rotating stall centered on low frequency domains the excitation of the inlet distortion on blades existed in both high and low frequencies and amplitude at low frequency was larger than that at high frequency.
topic Aerodynamic excitation characteristic
Inlet distortion
Trail excitation
Rotating stall
Correlation analysis.
url http://www.sensorsportal.com/HTML/DIGEST/january_2014/Vol_162/P_1770.pdf
work_keys_str_mv AT lichengfang vibrationanalysisofbladeundermultiplecompositeunsteadyexcitations
AT shunmingli vibrationanalysisofbladeundermultiplecompositeunsteadyexcitations
AT saima vibrationanalysisofbladeundermultiplecompositeunsteadyexcitations
AT jiyongli vibrationanalysisofbladeundermultiplecompositeunsteadyexcitations
_version_ 1725205169290870784