Comparative analysis of crashworthiness of empty and foam-filled thin-walled tubes

被引：97
作者：
Li, Zhibin [1 ]
Chen, Rong [1 ,2 ]
Lu, Fangyun [1 ]
机构：
[1] Natl Univ Def Technol, Coll Sci, Changsha 410073, Hunan, Peoples R China
[2] Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China
来源：
THIN-WALLED STRUCTURES | 2018年 / 124卷
基金：
中国国家自然科学基金;
关键词：
Thin-wall tube; Axial compression; Crashworthiness; Energy-absorbing effectiveness factor; Experimental investigation; ENERGY-ABSORPTION CHARACTERISTICS; ALUMINUM FOAM; CIRCULAR TUBES; OPTIMIZATION; DEFORMATION; INDENTATION; DESIGN;
D O I：
10.1016/j.tws.2017.12.017
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Quasi-static axial compression tests were conducted on two types of empty aluminum alloy tubes (circular and square) and five types of aluminum ex-situ foam filled tube structures (foam-filled single circular and square tubes, foam-filled double circular and square tubes, and corner-foam-filled square tube). The load-deformation characteristics, deformation mode and energy absorption ability of these structures were investigated. Several parameters related to their crashworthiness were compared, including the specific energy absorption, the energy -absorbing effectiveness factor, etc. The influence of physical dimension on the crashworthiness of these structures was explored. Dimensions of the inner tube were found to have significant influence on the structural crashworthiness of foam-filled double tubes. The averaged crush force, specific energy absorption, energy absorption per stroke and energy-absorbing effectiveness factor of thin-walled circular structures are higher than those of thin-walled square structures, respectively. Foam-filled single and double circular tube structures are recommended as crashworthy structures due to their high crush force efficiency and energy-absorbing efficiency.
引用
收藏
页码：343 / 349
页数：7
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