PDF(Pubmed)
Abstract：
As an important part of head protection equipment, research on the material and structural application of helmet liners has always been one of the hotspots in the field of helmets. This paper first discusses common helmet liner materials, including traditional polystyrene, polyethylene, polypropylene, etc., as well as newly emerging anisotropic materials, polymer nanocomposites, etc. Secondly, the design concept of the helmet liner structure is discussed, including the use of a multi-layer structure, the addition of geometric irregular bubbles to enhance the energy absorption effect, and the introduction of new manufacturing processes, such as additive manufacturing technology, to realize the preparation of complex structures. Then, the application of biomimetic structures to helmet liner design is analyzed, such as the design of helmet liner structures with more energy absorption properties based on biological tissue structures. On this basis, we propose extending the concept of bionic structural design to the fusion of plant stalks and animal skeletal structures, and combining additive manufacturing technology to significantly reduce energy loss during elastic yield energy absorption, thus developing a reusable helmet that provides a research direction for future helmet liner materials and structural applications.
摘要：
作为头部保护设备的重要组成部分，头盔衬垫材料和结构应用的研究一直是头盔领域的热点之一。本文首先讨论了常见的头盔衬垫材料,包括传统的聚苯乙烯,聚乙烯,聚丙烯,等。,以及新兴的各向异性材料，聚合物纳米复合材料，等。其次,讨论了头盔内衬结构的设计概念，包括使用多层结构，加入几何不规则气泡以增强能量吸收效果，并引入新的制造工艺，比如增材制造技术，实现复杂结构的制备。然后，分析了仿生结构在头盔内衬设计中的应用，例如基于生物组织结构的具有更多能量吸收特性的头盔衬垫结构的设计。在此基础上,我们建议将仿生结构设计的概念扩展到植物茎和动物骨骼结构的融合，并结合增材制造技术，显著降低弹性屈服能量吸收过程中的能量损失，从而开发出可重复使用的头盔,为未来头盔内衬材料和结构应用提供了研究方向。
