VFW is generally composed of inner steel plate, outer steel plate and viscous liquid. There are two types of single steel plate and double steel plate. They are speed-related dampers.Main features:
(1) The built-in liquid has no rigidity that can be calculated, and does not affect the structure and mode of the shock absorber before the cycle;
(2) The hysteresis curve is elliptical, which ensures that the damper placed on the structure has zero force at the maximum displacement. The displacement is zero under the maximum force;
(3) It can reduce the structural force in the seismic response and the response displacement;
(4) It can be used repeatedly under earthquake and wind load;
(5) Good weather resistance.
VFW Intro Principle of damping Test
The inner steel plate is fixed on the upper floor, and two outer steel plates are fixed on the lower floor. When the structure is affected by wind or earthquake, the moving speed of the floor is different, resulting in the relative speed of the inner steel plate and the outer plate. The velocity gradient between the inner and outer steel ladders dampens the viscous material, which increases the damping of the structure and reduces the dynamic response of the structure.
Principle of damping
We have completed a number of product tests for viscous damping walls, and the hysteresis curve is full and stable, and the product has good energy consumption performance.