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...
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IFSA Publishing, S.L.
2014-01-01
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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.
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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 |
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1725205169290870784 |