一种可调频式的管路动力吸振器研究与实验验证

基于反共振原理,设计了一种可调频式的管道动力吸振器,通过移动弹簧片上的质量块位置,并将其安装在管路共振位移最大处,可以实现不同频率下管道减振。通过构建了一段空间管路,利用有限元仿真分析和管道振动实验,验证了本文设计的调频动力吸振器能够在不同共振频率处对管路进行有效减振,结果表明调节减振器弹簧片上的质量块位置能够将减振器的减振效果调整到最佳。所研究的可调频式管道动力吸振器具有很强的工程应用价值。

Study and Experimental Verification on a Dynamic Vibration Absorber with Frequency Adjustable

A dynamic vibration absorber with frequency adjustment installed in the maximum resonance displacement point of the pipeline which plays an role in reducing the piping vibration under different natural frequencies by moving the position of mass block on the leaf spring has been designed based on the principle of anti-resonance.A space pipeline has been built.The ability of designed dynamic vibration absorber to damp the pipelines which possess different natural frequencies within the available range of frequency has been validated via finite element analysis and pipeline vibration test.The result shows that the best damping effect of dynamic vibration absorber through adjusting the position of mass block on the leaf spring. And the best installation location is the maximum resonance displacement of the pipes.The application value of the designed dynamic vibration absorber has been indicated.