Estimation of the initial peak load for circular tubes subjected to axial impact

被引：25

作者：

Chen, D. H. ^{[2
]}

Ushijima, K. ^{[1
]}

机构：

[1] Kyushu Sangyo Univ, Dept Mech Engn, Higashi Ku, Fukuoka 8138503, Japan

[2] Tokyo Univ Sci, Dept Mech Engn, Chiyoda Ku, Tokyo 1020073, Japan

来源：

THIN-WALLED STRUCTURES | 2011年 / 49卷 / 07期

关键词：

Circular tubes; Axial impact; Energy absorption; FEM; CYLINDRICAL-SHELLS; ENERGY-ABSORPTION; SQUARE TUBES; TRANSITION; COLLAPSE;

D O I：

10.1016/j.tws.2011.02.013

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper discusses the estimation of the initial peak load for circular tubes subjected to axial impact based on a finite element analysis. The peak load depends on the material properties, tube geometries and impact velocity. By changing some parameters systematically, effects of material properties and tube geometries on the peak load are explored. Also, the effect of the impact velocity on the peak load implies both the inertia effect and the material strain rate dependency. By observing the axial stress distribution and deformation behaviour in detail, and by calculating the strain rate near the vertex of a wrinkle when the peak load is observed, both effects on the peak load are clarified. Moreover, an approximate equation to evaluate the peak stress is proposed and in good agreement with the FEM results and other researcher's results under a relatively low impact velocity (V(0) < 40 m/s). (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：889 / 898

页数：10

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