Volume 32 Issue 4
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Application of a friction damper in blisk structure[J]. Journal of Aerospace Power, 2017, 32(4): 800-807. doi: 10.13224/j.cnki.jasp.2017.04.004
Citation: Application of a friction damper in blisk structure[J]. Journal of Aerospace Power, 2017, 32(4): 800-807. doi: 10.13224/j.cnki.jasp.2017.04.004

Application of a friction damper in blisk structure

doi: 10.13224/j.cnki.jasp.2017.04.004
  • Received Date: 2015-09-10
  • Publish Date: 2017-04-28
  • A fraction damper for integrally bladed disk(blisks) was introduced. The design was based on a friction pin located in a hole underneath the rim of the blisk. In operation, friction occurred between the pin and the rim due to centrifugal load, so the vibration energy was dissipated. This friction pin damper was applied into two turbine blisks to reduce the blade dynamic stress. Test results revealed that damping efficiency varied intensely. Through numerical simulation, it was proven that damping efficiency of this damper was closely related to vibration energy transfer between blades and disks. For strong coupling blade-disk mode, this damper could be highly efficient and blade vibration stress reduces about 70%, while for weak coupling blade-disk mode, the blade vibration stress reduces only a little.

     

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