水平せん断力を受ける塔状型円筒シェルの破壊実験

抄録

Failure of cylindrical tanks subjected to earthquake excitations are often caused whether by buckling such as shear buckling and local buckling or by elephant-foot bulging, which appears at the lower part of the shells. And it is of practical importance in the design of these tanks to evaluate the ultimate resistant capacity by examining these failures in detail. The purpose of this paper is to examine the influence of height-to-radius ratio and the material properties upon the failure mechanisms. To this end, ten models made of aluminium and mild steel with common dimensions of radius : 150 mm and thickness : 1 mm, as well as the variable dimension of height : 712 mm, 575 mm, 420 mm and 275 mm, respectively, are tested under static transverse shear loads. From this tests, elephant-foot bulging and plastic shear buckling were observed corresponding to the heighti-to-radius ratio, and the results show about 30 % of the classical buckling stress of cylindrical shells due to the axial uniform load. The details are presented in the paper "Failure Tests of Cylindrical Shells under the Transverse Load" proceedings of IASS symposium (Osaka, Japan), Elsevier, 1986.