板構造物の座屈解析モデルの基礎検討

抄録

A modeling method for buckling FE analysis of plate structures with corner dimension was proposed. The model for a plate with corner dimension consists of an edge plate with equivalent length and constant thickness. The equivalent length is derived from the efficient buckling length by comparing with buckling forces of plates with corner dimension and consistent thickness under the condition of both fixed edges. The equivalent thickness is derived from comparing with support stiffness of the plates with corner dimension and constant thickness. The proposed method was applied to single plates and plate structures with corner dimension, and the buckling forces of the given structures and structures modeled by the proposed method were compared by buckling FE analyses. It was found that the buckling forces could be evaluated within errors of 1.9 % and 2.7 %.