材料
Online ISSN : 1880-7488
Print ISSN : 0514-5163
ISSN-L : 0514-5163
論文
薄肉多角形断面部材の塑性座屈挙動に及ぼす断面凹型化の効果
中澤 嘉明田村 憲司日下 貴之吉田 経尊北條 正樹
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2007 年 56 巻 11 号 p. 1042-1048

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By using finite element analysis, effects of installing concave geometry in thin-walled octagonal shell members on plastic buckling behavior were studied to evolve a novel design method of the crash box for automobiles. Numerical results showed that the installation of concave geometry in thin-walled octagonal shell members enabled to shorten the wavelength of plastic buckling and consequently to improve the plastic buckling load. This buckling load became larger as the concave width and the concave depth increased. Moreover the installation of concave geometry changed the phases of plastic buckling between adjacent regions in the circumferential direction. A novel design scheme improving crash energy absorption of thin-walled polygonal shell members was also established on the basis of the above outcomes.

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© 2007 日本材料学会
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