TIME HISTORY RESPONSE ANALYSIS USING THE NATURAL FREQUENCY OF THE BULGING FOR THE REAL SUS PANEL TANK

Abstract

Various damages to SUS panel tanks have been reported due to the earthquakes. These causes are due to the bulging. The bulging is a coupled vibration interacted the wall structure and fluid by short-period seismic motion. However, there are no design standards for bulging, and it is necessary to establish those standards. In this paper, we carried out the time history response analysis using the natural frequency of the bulging for the real SUS panel tank. This analysis clarifies the center part of the tank wall and the corner members is the weak points of the real SUS panel tank. As for the stress, peeling off occur at the welded parts and buckling occur at the corner members.