周方向に溝を有する角筒の軸圧潰特性

概要

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In this paper, the effect of radial processing corrugation on the axial crushing behavior of square tubes is studied by using the finite element method. The corrugations are one of the dominant factors in influencing the deformation mode and they improve the energy absorbing capacity of the square tube. The numerical results show that the average stresses of square tubes with corner (STC) are affected by the shape of corrugations and those intervals. The average stresses of STC, however, are same with no dependence of the width when the shape and interval of corrugations are identical. Furthermore, the numerical results of the model predict two different modes, termed the Extensible and the Inextensible modes corresponding to the aspect ratio. In addition, the average stress predicted by the proposed method using a master curve and approximate equations for the simple square tube is found to be good agreement with results by FEM.
社団法人日本機械学会の論文
2009-02-25