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This study proposes novel designs of car bumper beams utilizing negative stiffness metamaterials (NSMM) to enhance crashworthiness under low-velocity impacts. Through finite element analysis, the energy absorption performance of conventional beams, NSMM-reinforced interior designs, and NSMM-reinforced exterior designs was evaluated for multiple material combinations. The results reveal that NSMM-reinforced interior designs significantly improve energy dissipation, with configurations like Aluminum/Aluminum achieving a 60% increase over conventional designs. NSMM-reinforced exterior designs, while exhibiting variability, demonstrate potential for modular and targeted applications. Additionally, hybrid material combinations, such as Magnesium/Polymer, highlight the adaptability of NSMM for lightweight, high-performance designs. These findings validate the effectiveness of the proposed NSMM-based bumper beams in meeting and exceeding safety standards, offering a transformative approach to vehicle safety and sustainability.

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Conceptual Design and Dynamic Evaluation of Car Bumper Beams Utilizing Negative Stiffness Metamaterial

  • 会议论文

  • 发表日期：

    2025年

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  • Ali Cherif Messellek,
  • Mohamed Amine Serir,
  • Ould Ouali Mohand,
  • Abdelghani May

摘要

This study proposes novel designs of car bumper beams utilizing negative stiffness metamaterials (NSMM) to enhance crashworthiness under low-velocity impacts. Through finite element analysis, the energy absorption performance of conventional beams, NSMM-reinforced interior designs, and NSMM-reinforced exterior designs was evaluated for multiple material combinations. The results reveal that NSMM-reinforced interior designs significantly improve energy dissipation, with configurations like Aluminum/Aluminum achieving a 60% increase over conventional designs. NSMM-reinforced exterior designs, while exhibiting variability, demonstrate potential for modular and targeted applications. Additionally, hybrid material combinations, such as Magnesium/Polymer, highlight the adaptability of NSMM for lightweight, high-performance designs. These findings validate the effectiveness of the proposed NSMM-based bumper beams in meeting and exceeding safety standards, offering a transformative approach to vehicle safety and sustainability.