Volume 36 Issue 9
Sep.  2021
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ZHANG Fengling, NIE Jinlong, LI Lin, TIAN Jing, WANG Zhi. Vibration localization suppression mechanism of mistuned bladed-disk by aperiodic piezoelectric damping[J]. Journal of Aerospace Power, 2021, 36(9): 1811-1825. doi: 10.13224/j.cnki.jasp.20210133
Citation: ZHANG Fengling, NIE Jinlong, LI Lin, TIAN Jing, WANG Zhi. Vibration localization suppression mechanism of mistuned bladed-disk by aperiodic piezoelectric damping[J]. Journal of Aerospace Power, 2021, 36(9): 1811-1825. doi: 10.13224/j.cnki.jasp.20210133

Vibration localization suppression mechanism of mistuned bladed-disk by aperiodic piezoelectric damping

doi: 10.13224/j.cnki.jasp.20210133
  • Received Date: 2021-04-02
  • Publish Date: 2021-09-28
  • An aperiodic piezoelectric damping technology was introduced into the mistuned bladed-disk structure to form an electromechanical coupling system.The dynamic equations of the electromechanical coupling system were derived,and the vibration localization suppression effect of the aperiodic piezoelectric system on the mistuned bladed-disk was theoretically analyzed.Two models of aperiodic piezoelectric system were constructed:the aperiodic piezoelectric shunting model and the aperiodic piezoelectric network model.The results show that,the aperiodic piezoelectric system,which is connected according to the dimensions of energy concentration, has a better effect on the vibration localization suppression effect compared with the dual-periodic piezoelectric network system.In the construction of the aperiodic piezoelectric network system,the resistance is no longer the key factor,and the energy distribution in the whole bladed-disk structure is changed mainly through the circuit form,in which the inductor is very important as an energy storage element.Through the reasonable design of circuit form of the aperiodic piezoelectric network,the vibration localization suppression effect better than the aperiodic piezoelectric shunting system and the dual-periodic piezoelectric network system can be obtained.

     

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