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This study explores the crashworthiness characteristics of hollow straight and frusta polygonal shells with various profiles inspired by bionic design. The decrease in PCL of shells with an upper diameter of 60 mm and 50 mm, compared to their corresponding straight counterparts, ranges from approximately 15% to 30%, respectively. Furthermore, the reduction in crushing force efficiency of tubes with upper diameters of 60 mm and 50 mm, compared to their respective straight tubes, is around 11% and 24%, respectively. The specific energy absorption capabilities of shells with upper diameters of 60 mm and 50 mm are between 4% and 10% smaller than those of their corresponding straight counterparts, respectively. The MOORA decision-making method is employed to identify F_DT_2 as the most suitable shell design for energy absorber applications.

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Axial Collapse Comparison of Tubes Mimicking the Bionic Design Used as Crash Box Shells

  • 会议论文

  • 发表日期：

    2025年

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  • TrongNhan Tran

摘要

This study explores the crashworthiness characteristics of hollow straight and frusta polygonal shells with various profiles inspired by bionic design. The decrease in PCL of shells with an upper diameter of 60 mm and 50 mm, compared to their corresponding straight counterparts, ranges from approximately 15% to 30%, respectively. Furthermore, the reduction in crushing force efficiency of tubes with upper diameters of 60 mm and 50 mm, compared to their respective straight tubes, is around 11% and 24%, respectively. The specific energy absorption capabilities of shells with upper diameters of 60 mm and 50 mm are between 4% and 10% smaller than those of their corresponding straight counterparts, respectively. The MOORA decision-making method is employed to identify F_DT_2 as the most suitable shell design for energy absorber applications.