Buckling strength of thin-walled steel cylindrical shells with stiffened plates

Abstract

Thin-walled steel shell members are structurally superior as structural members. However, the thin-walled steel shell with stiffeners has been only studied in a part by reason of excelling dynamically on ordinary thin-walled shell without stiffeners. In this paper an investigation in regard of the increase of the buckling capacity on steel cylindrical shells with out- and inside stiffened plates is generated under pure axial compression. Then, so as to clarify the effect of the buckling capacity on thin-walled steel cylindrical shells with out- and inside stiffened plates, exact buckling strength and buckling mode shapes are generated by using the extended transfer matrix method. The buckling strength of cylindrical shell with out- and inside stiffened plates are obtained during the combination of half wave number (n) for perpendicular direction to axis and half wave number (m) for axis direction. Depending on circumstances, the local buckling strength of thin-walled shells with stiffened plates is sometimes failing by local buckling of stiffened plate to differ from local buckling of shell-panel in comparison with that of ordinary thin-walled shells without stiffener. Therefore, this study aims to plan increase of the local buckling capacity on the thin-walled steel cylindrical shells with out- and inside stiffened plates due to pure axial compression.