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| Influences of Damping Applied in Helicopter Main Anti-resonance Vibration Isolation System |
| Received:May 11, 2016 Revised:September 25, 2018 |
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| DOI：10.7643/ issn.1672-9242.2018.09.019 |
| KeyWord:anti resonance isolation damping frequency response function vibration isolation efficiency |
| Author | Institution |
| XIONG Feng |
Institute of Vibration Engineering Research, Nanjing University of Aeronautics and Astronautics, Nanjing, , China |
| WANG Ke |
Institute of Vibration Engineering Research, Nanjing University of Aeronautics and Astronautics, Nanjing, , China |
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| Abstract: |
| Objective To analyze influences of damping parameters on effective frequency range of formant suppression and anti resonance isolation. Methods A damper was installed on the main resonance beam, and the damping size was changed for simulation. Results With the increase of damping coefficient, the peak value of resonance gradually decreased; the frequency of the anti resonance point was basically unchanged; the efficiency of vibration isolation decreased; and the effective range of isolation efficiency was widened. It is suggested that the damping size of 0.01 was the most effective. Conclusion The damping efficiency and the effective frequency range of anti resonance isolation can be effectively adjusted by installing dampers and changing the damping size. |
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