313 薄肉円筒部材の衝撃座屈挙動に及ぼす形状および物性の影響(OS 材料・構造の動的特性(3))

抄録

Dynamic buckling behavior of thin-walled cylindrical shells was studied with focusing on the effects of geometry and material properties. The buckling mode changed from axisymmetric mode to nonaxisymmetric mode with increasing the aspect ratio of the specimen, D/t. The transition point of the buckling mode depended on the elastic modulus of the specimen, E. The energy absorbing capacity of the shells was remarkably improved by filling polyurethane foam. The origami model was applied to study the buckling behavior of the shells.