APPROXIMATE EQUIVALENT VIBRATION SYSTEM FOR NONLINEAR HORIZONTAL OSCILLATION OF LIQUID IN RECTANGULAR TLD

The equivalent vibration system of liquid in TLD will be of great use in the analysis of coupled vibration of TLD-structure system. While the cases of the equivalent vibration system of linear vibration have been studied widely, scarcely have those of nonlinear vibration been researched until now. In this paper, the equivalent vibration system representing vibration phenomenon approximately is proposed when liquid in a rectangular TLD is oscillated forcefully in horizontal direction nonlinearly and, by using the result, it is shown that the calculated vibration characteristics of liquid in TLD and TLD-structure system agree considerably with the results obtained from the experiment and the calculation by means of FEM.