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<p>This work is inspired by origami and designs a new type of multi-cellular tube. Three different materials for the multi-cellular tubes and tensile samples were fabricated using 3D printing technology. The mechanical properties of different materials were studied, comparing quasi-static compression and drop-weight impact tests. The results show that the AlSi10Mg sample exhibits the highest energy absorption capacity, reaching 6646.45&#xa0;J. Under both quasi-static compression and drop-weight impact, the Thermoplastic Polyurethane (TPU) samples displayed an Euler buckling mode. Due to the material characteristics of TPU, the samples exhibited optimal elasticity and good recoverability, making them suitable for withstanding multiple compressions. The deformation mode of the polylactic acid (PLA) samples was completely different; under quasi-static compression, they showed progressive folding deformation, while under drop-weight impact, the samples exhibited significant fracture due to inertial effects and the brittleness of PLA. These findings provide important application potential for automotive safety and passenger protection.</p>

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Experimental study on crashworthiness of multicellular tubes printed with different materials based on origami folding

  • 期刊论文

  • 发表日期：

    2025年1月4日

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  • Yuwen Chen,
  • Xiaolin Deng,
  • Huilan Huang

摘要

This work is inspired by origami and designs a new type of multi-cellular tube. Three different materials for the multi-cellular tubes and tensile samples were fabricated using 3D printing technology. The mechanical properties of different materials were studied, comparing quasi-static compression and drop-weight impact tests. The results show that the AlSi10Mg sample exhibits the highest energy absorption capacity, reaching 6646.45 J. Under both quasi-static compression and drop-weight impact, the Thermoplastic Polyurethane (TPU) samples displayed an Euler buckling mode. Due to the material characteristics of TPU, the samples exhibited optimal elasticity and good recoverability, making them suitable for withstanding multiple compressions. The deformation mode of the polylactic acid (PLA) samples was completely different; under quasi-static compression, they showed progressive folding deformation, while under drop-weight impact, the samples exhibited significant fracture due to inertial effects and the brittleness of PLA. These findings provide important application potential for automotive safety and passenger protection.