王博

1023

  • 教授     博士生导师   硕士生导师
  • 主要任职:党委常委、副校长
  • 其他任职:工业装备结构分析国家重点实验室副主任
  • 性别:男
  • 毕业院校:大连理工大学
  • 学位:博士
  • 所在单位:力学与航空航天学院
  • 学科:工程力学. 计算力学
  • 办公地点:工程力学系系楼304房间
  • 联系方式:办公电话: 0411-84706608; 手机: 壹叁玖肆贰捌伍玖捌伍伍
  • 电子邮箱:wangbo@dlut.edu.cn

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Dynamic axial crushing of origami crash boxes

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论文类型:期刊论文

发表时间:2016-11-01

发表刊物:INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES

收录刊物:SCIE、EI、Scopus

卷号:118

页面范围:1-12

ISSN号:0020-7403

关键字:Origami crash boxes; Energy absorption; Axial crushing; Basic folding element

摘要:Thirty-three dynamic tests on thin-walled tubes including conventional square tubes and two types of origami crash boxes were conducted on a drop hammer rig. All of the origami crash boxes have identical thickness t and surface area A to those of conventional square tubes. Experimental results validate that origami crash boxes perform better than the conventional square tubes. And the mean crushing force of origami crash boxes with longer modules (l/t= 60) is larger than that with shorter ones (l/t=40). Complete diamond mode as well as two new collapse modes, which are local buckling mode and symmetric mode, were observed in tests. The comparison among those three collapse modes suggests that the complete diamond mode is the most efficient one and the symmetric mode is the most inefficient one in terms of energy absorption. The effect of local buckling on the mean crushing force is presented to analyze the characteristics of those three collapse modes. It is found that the mean crushing force decreases with the increase of the number of buckling points. (C) 2016 Elsevier Ltd. All rights reserved.