Liquid Damper For Suppressing Horizontal And
Vertical Motions
Author(s)
M. Pirner & S. Urushadze
Abstract
The new type of passive tuned liquid damper (TLD) relies on the motion of
liquid inside a movable rectangular tank with two degrees of freedom (horizontal
displacement and rotation). The authors study the influence of vessel horizontal
motion and rotation on the damping of the vertical and horizontal vibrations of
the footbridges.
Keywords: liquid damper, damping, effectiveness of a liquid damper, vibration
table, harmonic excitation.
1 Introduction
The motion of liquids in containers has been studied in recent decades (see [1])
and simplified analysis been made on rectangular and cylindrical tanks [2], [13].
Numerous papers have been written on the motion of liquids both theoretically
and experimentally; the studies being based on linear or nonlinear potential flow
theory with the authors usually neglecting the influence of fluid viscosity (for
details see [5]). This paper expands the application of sloshing dampers,
formerly used only for the damping of horizontal motions of structures, to
include the damping of rotary motion. The principal objective of this research
was the ascertainment of the effectiveness of slosher damper damping. The
verification of the application of Abramson’s computing model [11] and the
possible application of slosher damper to the damping of the motions of bridges
and footbridges was also investigated.
Keywords
liquid damper, damping, effectiveness of a liquid damper, vibration
table, harmonic excitation.
Related Book
Other papers in this volume
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