Crush resistance of square tubes with various thickness configurations

被引:39
|
作者
Zhang, Xiong [1 ,2 ]
Zhang, Hui [3 ]
机构
[1] Huazhong Univ Sci & Technol, Dept Mech, Wuhan 430074, Hubei, Peoples R China
[2] Hubei Key Lab Engn Struct Anal & Safety Assessmen, Luoyu Rd 1037, Wuhan 430074, Peoples R China
[3] Wuhan Text Univ, Sch Mech Engn & Automat, Wuhan 430073, Hubei, Peoples R China
基金
中国国家自然科学基金;
关键词
Crush resistance; Corner element; Square tube; Energy absorption; Experiment; THIN-WALLED STRUCTURES; ENERGY-ABSORPTION; ANGLE ELEMENTS; ALUMINUM EXTRUSIONS; MULTICELL COLUMNS; BENDING COLLAPSE; GRADED THICKNESS; DESIGN; COMPRESSION; HONEYCOMBS;
D O I
10.1016/j.ijmecsci.2016.01.003
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
The crush resistance of corner elements with various thickness configurations is investigated in this paper. Experimental study and numerical analyses are performed for square tubes with uniform and nonuniform wall thickness. The variation of wall thickness is found to have great influence on both deformation mode and force responses of the tubes. Two theoretical methods are proposed to predict the mean crushing force of the corner elements with nonuniform wall thickness. One is based on data fitting with average wall thickness and another is a newly proposed analytical model. Both methods can give satisfactory predictions for crush resistance of corner elements developing inextensional mode. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码:58 / 68
页数:11
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