Viscous Dampers

Brief Introduction

Viscous dampers generally consist of a cylinder casing, piston, damping hole, damping medium (viscous fluid) and leader. In the event of an earthquake or extreme wind vibration, the damper can consume the vibration’s energy and protect the main structure and components from damage to ensure its safety.

When deformation occurs structures due to vibration, relative motion will appear between the piston and the cylinder casing of dampers installed in a structure. Because of this pressure difference between the front and back of the piston, viscous fluid flows through the damping hole and the damping force can be produced, dissipating vibration energy input from outsides to reduce the vibration response of the structure.