Vibration Attenuation Mechanism Investigation of a Adaptive Squeeze Film Damper
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摘要: 提出了一种带有金属橡胶外环的自适应挤压油膜阻尼器ASFD/MRR(Adaptive Squeeze Film Damper with Metal Rubber outer-Ring),它利用环形金属橡胶的弹性变形来调整油膜间隙,以达到油膜阻尼器最佳的减振效果,所进行的实验研究表明:对ASFD/MRR减振机理的理论预测和实验结果具有良好的一致性,该阻尼器在优化设计下,油膜间隙可以得到良好的控制,能明显抑制非线性振动现象的发生,具有良好的减振性能.Abstract: An ASFD/MRR (Adaptive Squeeze Film Damper with Metal Rubber outer-Ring) was designed to improve the high non-linearity of oil film force of conventional SFD (Squeeze Film Damper). The ASFD/MRR can effectively reduce vibration due to its ability of automatically adjusting the film clearance by elastic deformation of the metal rubber. Experimental results indicated that ASFD/MRR can control the clearance of the film and its oil film force characteristics are better than those of SFD. If ASFD/MRR can markedly restrain the occurrence of nonlinear vibration phenomenon such as bistable characteristic, lockup and non-synchronous motion, it can be suitable for wider range of unbalance level.
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Key words:
- dampers /
- rotors /
- vibration attenuation /
- metal rubber
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