针织轴向织物理论在防弹复合材料领域的应用  

Application of Knitted Axial Fabric Theory to Ballistic Composites

作　　者：狄维鑫 姜亚明[1,2] 董赵勇 Di Weixin;Jiang Yaming;Dong Zhaoyong(School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China;Key Laboratory of Advanced Textile Composite of Ministry of Education,Tiangong University,Tianjin 300387,China)

机构地区：[1]天津工业大学纺织科学与工程学院,天津300387 [2]天津工业大学先进纺织复合材料教育部重点试验室,天津300387

出　　处：《针织工业》2025年第3期5-10,共6页Knitting Industries

摘　　要：文中对多轴向经编织物面内拉伸力学公式做出推导与完善,并受针织轴向织物理论与针织轴向经编织物结构启发,设计并制备一种8向UD结构防弹复合材料,纤维轴旋转角包括0°、22.5°、45.0°、67.5°、90.0°、112.5°、135.0°、157.5°共8个方向,采用超高分子量聚乙烯纤维制备。理论计算显示该结构可提高其模量,设计并开展防弹性能测试,对多向UD结构防弹板与传统UD结构防弹板凹陷深度进行测试分析,结果显示:多向UD结构使背凹深度下降约21%,且背凹面积更大、形状接近圆形,证实了理论计算结果。经过分析是由于多向结构使弹道侵彻过程中响应纤维数量增加,且冲击波传播方向更多、距离更远,最终实现减少背凹深度效果。In this paper,the in-plane tensile mechanics formulae of multi-axial warp-knited fabrics are deduced and perfected,and inspired by the theory of knitted axial fabrics and the structure of knitted axial warp-knitted(MWK)fabrics,an 8-directional UD structural ballistic composite material is designed and prepared with eight directions,including the fiber axis rotation angles of 0°,22.5°,45.0°,67.5°,90.0°,112.5°,135.0°,157.5°in eight directions,and is prepared by using ultra-high molecular weight polyethylene(UHMWPE)fibers.Theoretical calcu-lations show that the structure can improve its modulus,design and carry out ballistic performance testing,test the multidirectional UD structure bulletproof plate and the traditional UD structure bulletproof plate depth of the depression.The results show that the multidirectional UD structure decreases the depth of backdent by about 21%,and the area of backdent is larger and the shape is close to round,which confirms the theoretical calculation results.The analysis is due to the fact that the multidirectional structure increases the number of response fibers in the process of ballistic penetration,and the shock wave propagates in more directions and farther distances,which ultimately achieves the effect of reducing the depth of backdent.

关 键 词：针织轴向织物 UD结构 面内拉伸 防弹复合材料 形变 背凹深度 

分 类 号：TS186.1[轻工技术与工程—纺织材料与纺织品设计]