Fluid Viscous Damper

Product Introduction

The Fluid Viscous Damper is a passive energy-dissipating and vibration-reducing device. It dissipates vibrational energy by utilizing the viscous resistance generated when fluid, usually silicone oil or polymer liquid, passes through small holes or gaps. Its core principle is to convert the kinetic energy of structural vibration into thermal energy via fluid damping force, thereby reducing the dynamic response of structures, such as displacement and acceleration.

At present, the classic fluid viscous damper adopts a cylinder double piston rod structure. When the piston performs reciprocating motion inside the damper cylinder, it forces the viscous fluid (e.g., silicone oil) to flow through small holes or gaps. The internal friction (viscous force) between fluid molecules and the throttling effect of the channels generate damping force to impede piston movement. The relationship between damping force F and piston velocity v usually conforms to the following formula:

F=C⋅V^α

F: Rated damping force (kN)

C: Damping coefficient (kN/(mm/s)^α)

V: Velocity (mm/s)

α: Velocity index