并联式液压脉动衰减器薄板模态及衰减效果研究

摘要

The oil pressure pulsation of hydraulic pumps causes the vibration and noise of hydraulic sys‐tem .Reduction of the oil pressure pulsation of the hydraulic system plays a significant role in improving the accuracy of actuators .A four sheet parallel hydraulic pressure pulsation attenuator is designed and fabricated .Its operating principles and inherent frequencies are analyzed .Then ,ANSYS Workbench is used for simulation analysis .The inhibitory effect of the oil pressure pulsation of the hydraulic system is tested on the hydraulic experiment table .The results show that the simulation results agree well with the experimental results .%液压泵油压脉动引起液压系统振动与噪声，减小液压系统油压脉动对于提高执行机构精度具有重要意义。设计制造了一种四薄板并联的液压脉动衰减器，分析了它的工作原理和固有频率，然后利用ANSYS Workbench对其进行仿真分析，并在液压实验台上进行了液压系统油压脉动抑制效果的实验。通过仿真与实验结果对比表明，并联式四薄板型油压脉动衰减器在较宽的频率范围内有较好的衰减效果。