Volume 37 Issue 8
Sep 2022
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JOURNAL OF MECHANICAL ENGINEERING  > 2022  >  37(8): 1587-1596.
DU Chunhua，ZHANG Yanchao，DONG Shuna，et al.Mathematical calculation method for hysteresis characteristics of arc⁃shaped finger seal［J］.Journal of Aerospace Power，2022，37（8）：1587‑1596. doi: 10.13224/j.cnki.jasp.20210126
Citation: DU Chunhua，ZHANG Yanchao，DONG Shuna，et al.Mathematical calculation method for hysteresis characteristics of arc⁃shaped finger seal［J］.Journal of Aerospace Power，2022，37（8）：1587‑1596. doi: 10.13224/j.cnki.jasp.20210126
shu

Mathematical calculation method for hysteresis characteristics of arc⁃shaped finger seal

doi: 10.13224/j.cnki.jasp.20210126
  • 1.

    School of Mechanical and Precision Instrument Engineering，Xi'an University of Technology，Xi'an 710048，China

  • 2.

    Research and Development Department，Suzhou Maxwell Technologies Company Limited，Suzhou Jiangsu 215200，China

  • 3.

    College of Energy and Power Engineering，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China

  • Received Date: 22 Mar 2021
    Available Online: 06 Sep 2022
  • Issue Publish Date: 28 Aug 2022
    Abstract
  • In order to predict the hysteresis characteristics of finger seal accurately,minimum hysteresis representing hysteresis characteristics of finger seal was proposed.Then minimum hysteresis mathematical calculation method was established,the correction coefficient of model was determined and verified by experiments.The influence rules of the structure and working condition parameters of finger seals on the hysteresis characteristics were studied and obtained based on the modified calculation model.Results showed that the maximum error between the numerical calculation of leakage characteristics considering the hysteresis effect based on modified calculation model and the test results was 7.64%,and the conclusion of model was reliable.The degree of influence of various structural parameters on the hysteresis characteristics of finger seal was in descending order: thickness of each finger laminate,finger repeat angle,arc radius of the finger beam arcs centers,diameter of the finger base circle,width of the interstice between fingers,and arc radius of finger beam.The results provide a theoretical basis and basis for further research on the influence of hysteresis on the finger seal leakage characteristics and the optimal design of finger seal structure.

     

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