摩擦对平纹织物防弹性能影响的研究进展

在明确柔性材料防弹原理的基础上，从有限元建模分析和弹道测试2个方面，对弹丸与试样间摩擦、纱线与纱线间摩擦作用的运行机制进行了概述，分析了摩擦在弹丸能量吸收过程中起到的直接与间接作用，并且总结了提高摩擦性能的常用手法。研究发现：提升弹丸与材料之间的摩擦有利于材料应变能和动能的吸收，提升纱线间的摩擦有利于防止纱线滑移和扩大能量吸收区域的面积；纤维表面改性技术可使纤维间摩擦性能得到显著的提升，但很难满足产业化的需要；将纱罗组织与平纹组织相结合，可增大纬纱的摩擦包角，提升其纬向握持力。相比于表面改性过的纤维材料，纱罗/平纹复合组织能够在全自动织机上制备，可解决批量生产、人力成本过高等技术难题。

Research progress on influence of friction on ballistic performance of flexible materials

Based on the understanding of the response of flexible materials upon ballistic impact, by finite element analysis and ballistic test, this paper reviews the working mechanisms of projectile-material and yarn-yarn friction in ballistic protection, investigates the direct and indirect influence of friction on projectile energy absorption, and summarizes the common approaches for frictional increase. It gas been found that increasing the projectile-material friction leads to an increase in material kinetic and strainenergy absorption, and increasing yarn-yarn friction avoids yarn slippate and enlarges the energy absorption area; it has also been claimed that, although an increase in friction could be obtained using fiber-surface-modification -based technology, treated fabric is difficult to massively profuce; and incorporation of leno structure into plain weave increases the wraping angle of the weft yarns, leading to an improvement on yarn gripping. In addition, structure-modification-based-technology could be achieved on the power loom, solving the problems of mass production and overhigh labor cost.