Performance Simulation and Impact Experiment of Viscous Damping Vibration Isolation Device
In order to improve the ability of vibration isolation equipment to cope with shock,a vibration isolation device with a viscous damper is developed.When the viscous damper is subjected to external impact,the piston tends to move,and the damping force formed under the trend of hole shrinkage effect dissipates the impact energy,so as to achieve the goal of vibration isolation.The simulation results show that the damping force decreases with the increasing of the damping hole size.When the aperture size increases from 2 mm to 3 mm,the damping force peak value decreases sharply,showing a strong change.The experimental results show that the errors of relative displacement and acceleration increase monotonically with the increase of load.Under the condition that the input load is less than 60 g,the simulation error is less than 5％,and the simulation results are highly consistent.The pressure reducing valve in the viscous damper can avoid the problem of excessive damping force and maintain strong performance.The research has laid a good theoretical foundation for the theoretical research of hydraulic vibration isolation device,and can be extended to other shock absorption fields.
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