Collision performance of bitubular tubes with diaphragms

被引:21
作者
Dong Hai-peng [1 ]
Gao Guang-jun [1 ]
Xie Su-chao [1 ]
Li Jian [1 ]
机构
[1] Cent S Univ, Sch Traff & Transportat Engn, Key Lab Traff Safety Track, Minist Educ, Changsha 410075, Hunan, Peoples R China
基金
中国国家自然科学基金;
关键词
bitubular tube; diaphragm; energy absorption; crashworthiness; THIN-WALLED STRUCTURES; ENERGY-ABSORPTION CHARACTERISTICS; SQUARE TUBES; CRASHWORTHINESS OPTIMIZATION; DESIGN; PATTERNS; COLUMNS;
D O I
10.1007/s11771-015-2907-x
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
A numerical study of bitubular tubes with diaphragms compared with single and bitubular tubes subjected to dynamic axial impact force was presented. At first, the energy absorption response of the composite structure under axial loading was analyzed by finite element simulation. The results show that the efficiency of energy absorption can be improved by introducing diaphragms to the double-walled columns. Then, the effect of the amount and location of diaphragms, the shape and the size of the inner tubes, and the thickness of the composite structures were also studied numerically. The collision performance of the composite structure is affected by the deformation of diaphragms, as well as the interaction of outer and inner tube. The non-uniform distribution of diaphragms can improve the energy absorption efficiency of structures for a constant number of diaphragms. The specific energy absorption of the hexagonal inner tube is the highest, followed by the circular, octagonal and square ones.
引用
收藏
页码:3657 / 3665
页数:9
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