Volume 27 Issue 6
Jun.  2012
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Article Navigation >  Journal of Aerospace Power  > 2012  >  27(6): 1238-1242
LIU Ya-lin, SHANGGUAN Bo, XU Zi-li. Anti-aliasing alternating frequency/time domain method and its application in response analysis of blade systems[J]. Journal of Aerospace Power, 2012, 27(6): 1238-1242.
Citation: LIU Ya-lin, SHANGGUAN Bo, XU Zi-li. Anti-aliasing alternating frequency/time domain method and its application in response analysis of blade systems[J]. Journal of Aerospace Power, 2012, 27(6): 1238-1242.
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Anti-aliasing alternating frequency/time domain method and its application in response analysis of blade systems

  • 1.

    School of Power and Energy,Xi'an Jiaotong University,Xi'an 710049,China

  • 2.

    State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace,Xi'an Jiaotong University,Xi'an 710049,China

  • Received Date: 2011-08-04
  • Publish Date: 2012-06-28
    Abstract
  • In order to solve the problems of spectrum alias error and spectrum coefficient periodically reiteration cause by using fast Fourier transform(FFT),the fast anti-aliasing Fourier transform was employed to improve analysis accuracy and efficiency of alternating frequency/time domain method.The nonlinear forced response of a real turbine blade was calculated by using the anti-aliasing alternating frequency/time domain method,and the computational accuracy and time were compared with these of the normal method.The results indicate that under certain parameter conditions,the calculation speed of the anti-aliasing alternating frequency/time domain method is about 4 times of the normal one,while the precisions are almost the same.These findings confirm the practicability of the anti-aliasing alternating frequency/time domain method in computing dynamic response of nonlinear systems based on finite element model for high precision analysis.

     

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    • References(12)
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