期刊
MATERIALS & DESIGN
卷 38, 期 -, 页码 99-109出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2012.01.028
关键词
Foams; Impact and ballistic; Plastic behavior
资金
- National 973 Project of China [2010CB328005]
- Fundamental Research Funds for the Central Universities [JB-ZR1157]
- State Key Laboratory of Advanced Design and Manufacture for Vehicle Body at Hunan University [30915003]
- Shanghai Key Laboratory of Digital Autobody Engineering [201004]
- State Key Laboratory of Vehicle NVH and Safety Technology [NVHSKL-201002]
- Key Laboratory for Automotive Transportation Safety Enhancement Technology of the Ministry of Communication, PRC [CHD2011SY008]
Thin-walled structures have been widely used as key components in automobile and aerospace industry to improve the crashworthiness and safety of vehicles while maintaining overall light-weight. This paper aims to explore the design issue of thin-walled bitubal column structures filled with aluminum foam. As a relatively new filler material, aluminum foam can increase crashworthiness without sacrificing too much weight. To optimize crashworthiness of the foam-filled bitubal square column, the Kriging meta-modeling technique is adopted herein to formulate the objective and constraint functions. The genetic algorithm (GA) and Non-dominated Sorting Genetic Algorithm II (NSGA II) are used to seek the optimal solutions to the single and multiobjective optimization problems, respectively. To compare with other thin-walled configurations, the design optimization is also conducted for empty bitubal column and foam-filled monotubal column. The results demonstrate that the foam-filled bitubal configuration has more room to enhance the crashworthiness and can be an efficient energy absorber. (C) 2012 Elsevier Ltd. All rights reserved.
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