仿犰狳鳞片结构的躯干柔性防护装具抗穿甲燃烧弹侵彻性能

Penetration Performance of the Torso Flexible Protective Gear Inspired by Armadillo Scale Structure Against Armor-piercing Incendiary Bullets

根据犰狳外骨皮盔甲的结构形态,设计了由SiC陶瓷和超高分子量聚乙烯(UHMWPE)构成的双层结构的仿生复合鳞片和新型柔性防护装具.该柔性防护装具由上层鳞片层与下层垫层组成,其中鳞片层由周期性排列复合鳞片构成,垫层为UHMWPE纤维层.采用MTS C43电子式万能试验机对防护装具进行了柔性测试,并依据《军用防弹衣安全技术性能要求》(GJB 4300A―2012)标准Ⅲ级弹道防护性能要求对其进行了弹道测试.分析了复合鳞片的厚度比、垫层数量、穿甲燃烧弹侵彻区域等因素对防护装具防护性能的影响,以及防护装具在集中荷载作用下刚度的变化过程.结果表明:该新型柔性防护装具具备良好的防护性能,不同侵彻区域对破坏范围具有显著影响;在集中荷载作用下垫层限制了鳞片层的弯曲变形,降低了整体柔性.

Based on the structure and morphology of the armadillo outer skin armor,this paper designed a bionic double-layer composite scale composed of SiC ceramic and ultra-high molecular weight polyethylene(UHMWPE)as well as a new type of flexible protective gear.The flexible protective gear consisted of an upper scale layer and a lower backing layer,in which the scale layer consisted of periodically arranged composite scales,and the cushion layer was made of UHMWPE layers.The flexibility test was carried out using the MTS C43 electronic universal testing machine,and ballistic tests were conducted in accordance with the ballistic protection performance requirements of standard II in the"Military bulletproof vest safety technical performance requirements"(GJB 4300A 2012).Then,the influences of the thickness ratio of the composite scales,ceramic thickness,number of backing layers,and penetration position of the armor-piercing incendiary bullet on the protective performance of the torso's flexible protective gear ware analyzed,and the change process of the rigidity of the protective gear under concentrated load was discussed.The results show that the new type of flexible protective gear has good protective performance,and different penetration areas have a significant impact on the damage range;the cushion layer limits the bending deformation of the scale layer under concentrated load and reduces the overall flexibility.The research results of this paper can provide valuable references for the design and performance improvement of torso flexible protective gear.