Optimization of foam-filled bitubal structures for crashworthiness criteria

Publication Type:
Journal Article
Materials and Design, 2012, 38 pp. 99 - 109
Issue Date:
Full metadata record
Files in This Item:
Filename Description Size
1-s2.0-S0261306912000374-main(1).pdfPublished Version1.03 MB
Adobe PDF
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. © 2012 Elsevier Ltd.
Please use this identifier to cite or link to this item: