Effects of Fluid Properties on Rod Seal Stick-Slip Mechanical and Sound Vibrations

The effect of fluid properties on hydraulic cylinder rod seal stick-slip friction was studied. Breakaway and stick-slip forces were measured for three ISO VG 32 fluids with slipper, U-cup, and Vee-pack seals. Breakaway forces increased exponentially with dwell time. Stick-slip friction produced audible low-frequency noise. Differences in the stick-slip behavior of the fluids were observed. Fast Fourier transform analysis of sound, force, and mechanical vibrations was conducted. Stick-slip friction increased the amplitude of low-frequency vibrations in all three domains. Micro stick-slip movement was elucidated via motion amplification technology. These findings provide a basis for the development of fluids that improve the control and safety of hydraulic equipment.

Automated summary

The effect of fluid properties on hydraulic cylinder rod seal stick-slip friction was investigated. The study findings provide a foundation for the development of fluids that can enhance the control and safety of hydraulic equipment.