Theoretical prediction and optimization of multi-cell hexagonal tubes under axial crashing

被引：154
作者：
Qiu, Na [1 ]
Gao, Yunkai [1 ]
Fang, Jianguang [1 ,2 ]
Feng, Zhaoxuan [1 ]
Sun, Guangyong [3 ]
Li, Qing [2 ]
机构：
[1] Tongji Univ, Sch Automot Studies, Shanghai 201804, Peoples R China
[2] Univ Sydney, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW 2006, Australia
[3] Hunan Univ, State Key Lab Adv Design & Manufacture Vehicle Bo, Changsha 410082, Hunan, Peoples R China
来源：
THIN-WALLED STRUCTURES | 2016年 / 102卷
基金：
国家教育部博士点专项基金资助; 中国国家自然科学基金;
关键词：
Multi-cell tube; Analytical prediction; Crashworthiness; Hexagonal tube; Multi-objective optimization; Energy absorption; THIN-WALLED STRUCTURES; ENERGY-ABSORPTION; MULTIOBJECTIVE OPTIMIZATION; CRASHWORTHINESS DESIGN; CRUSH RESISTANCE; SQUARE; COLUMNS; WEIGHT;
D O I：
10.1016/j.tws.2016.01.023
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In this paper, the analytical formulas of mean crashing force for four different hexagonal tubes with multiple cells were first derived based on the Simplified Super Folding Element (SSFE) theory through several typical constituent elements: corner element, three-panel angular element I and three-panel angular element II. The numerical simulations of hexagonal multi-cell configurations were then correlated with the derived analytical solutions. Finally, both analytical formulas and finite element analysis (FEA) based surrogate models were employed to optimize the cross-sectional dimensions of the hexagonal tubes. From the optimization results, web-to-web (W2W) is the most efficient configuration in improving the crashing behavior, while corner-to-comer (C2C) is the worst of these four configurations. Importantly, the Pareto fronts obtained from the analytical formulas agree well with those from the FEA based surrogate models. As a result, analytical formulas could be recommended in crashworthiness optimization for the sake of computational efficiency. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：111 / 121
页数：11
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