A STANDING-WAVE-TYPE SLOSHING ABSORBER TO CONTROL TRANSIENT OSCILLATIONS

The primary purpose of this study is to introduce a sloshing absorber as a practical alternative to the damped tuned absorber. In addition, a numerical simulation procedure is introduced as a computer-aided design tool. The problem of interest is the control of excessive oscillations of a mechanical oscillator in response to an initial displacement. Tuned vibration absorbers are frequently used for this purpose, and if damping is included in the tuned absorber, control action is quite effective. The problem, however, is that inclusion of an energy dissipation element necessitates frequent maintenance in practice. The suggested control technique here is a sloshing absorber, in place of the damped tuned vibration absorber. In contrast to a tuned absorber, a sloshing absorber accomplishes energy dissipation through sloshing. Therefore, it may be virtually maintenance free. Also for practical applications, this type of absorber can be an advantage where existing water storage tanks can be modified to control vibrations of the supporting structure.