1508 薄肉円管の吸収エネルギー及び荷重の安定性に及ぼす形状の効果(OS15.材料・構造体の衝撃応答(3))

概要

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In order to investigate the fundamental properties of energy absorption components, thin-walled circular tubes have been examined as simple example structures. In this study, the effects of the initial wave pattern on the surface of the tubes which will lead the tube to the axis symmetric buckling, were especially investigated by using the FEM code LS-DYNA. To evaluate the effects of the initial wave pattern, we paid attention to the energy absorption per unit volume and the stability of buckling load. From the numerical results, it was found that the stability was obtained by adding wave patterns in the axial direction, although the energy absorption per unit volume decreased with the increase of the stability of buckling load. Furthermore, we introduced the change of the amplitude of wave pattern in the axial direction to improve the energy absorption per unit volume.
社団法人日本機械学会の論文
2007-11-25