鋼製薄肉円管の連続塑性座屈に関する研究

概要

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The main aim of this paper is to give important information for understanding the mechanism of the axial crushing of thin-walled structures under dynamic loading, from the safety point of view in car crushing. For this, the axial crushing experiments of circular tube specimens were conducted by using the dynamic-loading device with the load sensing block to evaluate the properties of dynamic progressive buckling of two types of materials. The thin-walled circular tube specimens of steel and aluminum alloy were chosen, stressing mainly on the behavior of steel specimens. The effect of impact velocity on the magnitude of axial stress corresponding to the first buckling of the dynamic progressive buckling, and the effect of the differences between those material properties on the behavior of the dynamic progressive buckling were clarified. The absorbed energy per unit volume of the steel specimen was also examined. It was found that the ratio of the thickness to the diameter of the specimen affects greatly the absorbed energy per unit volume and the deformation mode of dynamic progressive buckling.
一般社団法人日本機械学会の論文
2000-02-25