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The automotive industry’s pursuit of lightweight components presents a challenge in balancing weight reduction and structural integrity. Shape Memory Alloys (SMAs) offer a promising solution, capable of altering their properties when triggered, enhancing the crashworthiness of front-end vehicle components such as bumper beams and crash boxes. This research integrates SMA elements into carbon fiber-reinforced polymer (CFRP), forming an advanced composite material. To validate this approach, crashworthiness testing will use finite element analysis (FEA) software like LS-DYNA. Physical crash tests, though reliable, are costly and time-consuming. FEA simulations provide a cost-effective, time-efficient alternative, crucial for developing automotive components. LS-DYNA’s SMA material data cards will accurately model SMA behavior, aiding in the optimization of these composites.The innovative crash box design, incorporating ten SMA wire layers within CFRP, demonstrates significant improvements: a 79% weight reduction compared to standard steel versions, a 60% decrease in peak force, and a 97% increase in specific energy absorption. This cutting-edge research highlights the potential of SMAs to revolutionize automotive component design, achieving superior performance and efficiency.

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Layering Tailored Shape Memory Alloys into Carbon Fibre-Reinforced Polymer Composites for Enhanced Frontal Impact

  • 会议论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年

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  • Mohab Elmarakbi,
  • Ahmed Elmasry,
  • Yongqing Fu,
  • Ahmed Elmarakbi

摘要

The automotive industry’s pursuit of lightweight components presents a challenge in balancing weight reduction and structural integrity. Shape Memory Alloys (SMAs) offer a promising solution, capable of altering their properties when triggered, enhancing the crashworthiness of front-end vehicle components such as bumper beams and crash boxes. This research integrates SMA elements into carbon fiber-reinforced polymer (CFRP), forming an advanced composite material. To validate this approach, crashworthiness testing will use finite element analysis (FEA) software like LS-DYNA. Physical crash tests, though reliable, are costly and time-consuming. FEA simulations provide a cost-effective, time-efficient alternative, crucial for developing automotive components. LS-DYNA’s SMA material data cards will accurately model SMA behavior, aiding in the optimization of these composites.The innovative crash box design, incorporating ten SMA wire layers within CFRP, demonstrates significant improvements: a 79% weight reduction compared to standard steel versions, a 60% decrease in peak force, and a 97% increase in specific energy absorption. This cutting-edge research highlights the potential of SMAs to revolutionize automotive component design, achieving superior performance and efficiency.