軸圧縮荷重を受ける円筒殻の分岐クリープ座屈 : 端部境界条件の影響についての考察

概要

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In some creep buckling experiments conducted by other authors, axially compressive cylindrical shells with a large ratio of radius to thickness were observed to buckle with circumferential waves. In the previous paper, we demonstrated that the circumferential waves observed in the creep buckling experiments are due to the bifurcation. In the present paper, we performed the analysis of this creep buckling phenomena. We paid special attention to the effect of end boundary conditions on the critical time of creep buckling and on the bifurcation buckling mode. We found that the bifurcation buckling of a cylindrical shell with both ends simply supported occurs earlier than that of a cylindrical shell with both ends clamped. It was also found that circular cylindrical shells exhibit three types of bifurcation buckling modes, depending on the dimensions of cylindrical shell, applied load levels and end boundary conditions.
一般社団法人日本機械学会の論文
1991-05-25