整体式挤压油膜阻尼器对管道振动抑制试验

针对管道振动现象，设计了一种整体式挤压油膜阻尼器并分析其刚度影响规律。利用SAP2000软件模拟仿真阻尼减振效果。搭建二维门型管道振动试验台，在管道上安装整体式挤压油膜阻尼器，研究整体式挤压油膜阻尼器控制管道振动的影响规律。结果表明：整体式挤压油膜阻尼器安装在激振源处且与激振力平面平行时的减振效果最佳，较原始振动降幅达51.83%；安装在激振源处且与激振力平面垂直时的减振效果最差；安装两个整体式挤压油膜阻尼器减振效果优于安装一个整体式挤压油膜阻尼器；安装在激振源处的减振效果优于安装在远离激振源的效果。

Experimental Study on Controlling Vibration of Pipeline with Integral Squeeze Film Damper

light of the pipeline vibration, an integral squeeze film damper is designed and the rules of stiffness are analyzed. The damping effect is simulated with SAP2000 software. The integral squeeze film damper is installed on a two-dimensional gate-type pipeline vibration test bench to study the rules of vibration in the pipeline. The results show that the integral squeeze film damper performs best with a 51.83% decrease in amplitude when installed at the excitation source and being parallel to the plane of the excitation force, while the damper acts worst when installed at the excitation source and being vertical to the plane. Besides, two integral squeeze film dampers perform better than one does, and the damper installed at the excitation source excels the one away from the source in vibration attenuation.