Studies on the Seismic Buckling Design Guideline of FBR Main Vessels. (Effect of Thermal Loads on Shear-Bending Buckling Strength of Main Vessels).

Abstract

The problem of the effect of thermal loads on buckling strength is important in buckling research for fast breeder reactors, because an axial temperature gradient is produced in the main vessel and significant thermal stress is induced at the surface of sodium. In this paper, we focus on two types of reactor vessels(loop type and pool type)and investigate the effect of thermal loads accompanied by axial temperature changes near the sodium surface. In addition, the reduction of the buckling strength due to thermal loads is evaluated.