Volume 36 Issue 8
Aug.  2021
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LI Lin, GAO Qian, WU Yaguang, FAN Yu. On the vibration reduction performance of underplatform dampers considering parameter correlation[J]. Journal of Aerospace Power, 2021, 36(8): 1657-1668. doi: 10.13224/j.cnki.jasp.20200373
Citation: LI Lin, GAO Qian, WU Yaguang, FAN Yu. On the vibration reduction performance of underplatform dampers considering parameter correlation[J]. Journal of Aerospace Power, 2021, 36(8): 1657-1668. doi: 10.13224/j.cnki.jasp.20200373
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On the vibration reduction performance of underplatform dampers considering parameter correlation

doi: 10.13224/j.cnki.jasp.20200373

  • 1. School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;

  • 2. Beijing Key Laboratory of Aero-engine Structure and Strength, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 2020-09-04
  • Publish Date: 2021-08-28
    Abstract
  • The correlation between principal parameters of wedge underplatform dampers (UPDs) was established to reveal the influence of these relevant parameters on the damping effect, and then to summarize the design guidelines considering parameter correlation. Based on the lumped parameter model of a two blades-UPD system which can describe the motion containing phase lag between blades,the steady state response of the system was simulated by the multi-harmonic balance method(MHBM), and the reduction of the resonance amplitude was used to quantify the damping performance. In order to improve the convergence and efficiency of the algorithm,the Jacobian matrix was deduced analytically. Results showed that it was necessary to consider the parameter correlation. The damper performance of wedge UPDs can be optimized to 4. 57% by choosing larger material density and appropriate wedge angles. Asymmetric wedge dampers can further improve the damping effect under excitation with phase lag.

     

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