一种新型仿生型防刺服的基板设计与防刺机理探究

Substrate Design and Stab-Resistant Mechanism of a New Type of Bionic Stab-Resistant Clothing

为进一步开发出轻质有效的个体防刺装备,本文借鉴自然界的生物装甲模型,设计出一种类似三棱锥结构的仿生型防刺基板.前期通过刀具冲击基板的数值模拟和实验测试,探究了三棱锥结构防刺基板的抗冲击行为及防刺机理,并得到了最优的结构设计.由于三棱锥结构对刀具的冲击力具有分散作用,避免了冲击动能的集中破坏,使得三棱锥结构比平板的防刺性能要高得多.通过采用具有优异冲击韧性的改进型钛合金(TC611)材料制作的三棱锥防刺基板最佳角度为22.5°,最佳厚度为1 mm.采用新型铆接方式设计并制造的整体防刺层通过了警用防刺服GA 68-2008的刀具冲击测试.相比现有的大部分防刺服,该种防刺服更能有效抵御刀具的冲击,且重量轻、制作周期短,具备较高的可穿戴性.

To further develop lightweight and effective individual stab-resistant equipment,this study drew on the biological armor model of nature to design a bionic stab-resistant substrate with a triangular pyramidal structure.Numerical simulations and experimental testing of a knife impacting a substrate were used to study the impact-resistance behavior and stab-resistance mechanism of a triangular pyramidal stab-resistant substrate,and an optimal structural design was thus obtained.Because the triangular pyramidal structure had a dispersing effect on the knife impact force,the material could avoid the concentrated damage by the impact kinetic energy,giving the triangular pyramidal structure a much higher stab resistance than a comparable flat plate.The optimal angle of the triangular pyramidal stab-resistant substrate produced from a modified titanium alloy(TC611)material with excellent impact toughness was found to be 22.5°and the optimal thickness 1 mm.A full stab-resistant layer designed and manufactured using a new riveting method passed the knife impact test for police stab-resistant clothing in line with the GA 68-2008 standards.This clothing works more effectively against the impact of a knife,being lightweight,and having a shorter manufacturing cycle,and higher wearability.