Abstract Most previous numerical investigations show that inter-yarn friction is one of the critical parameters to ballistic performance of woven fabrics under ballistic impact. However, the effects of inter-yarn friction on the ballistic performance of those fabrics are not approved by empirical work. There are two premises to empirically prove the numerical analyses, where the fabric structure and yarn mechanical properties and the weight are almost kept. Our previous investigation show that TiO2/ZnO composites on the yarn surface by sol-gel treatment can keep yarn mechanical properties and weight unaffected but significantly increase the inter-yarn friction. In this way, TiO2/ZnO composites generated by sol-gel treatment were coated to the ballistic fabrics through dip-pad-dry process to vary the inter-yarn friction. Ballistic perforation tests were conducted to those fabrics under impact velocity of 460-500 m/s with one-gram weight cylindrical projectile and the numerical simulation work were also carried out. Through comparisons between ballistic impact tests and numerical results, it shows that higher inter-yarn friction is better for energy absorption, especially at more fabric layers. Both numerical analysis and experimental work have approved that higher inter-yarn friction would lead to more large areas engaged in energy absorption and shear broken become more pronounced.

中文翻译：

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纱线间摩擦对Twaron®织物弹道性能影响机理的试验与数值研究

摘要 以往的大多数数值研究表明，纱线间摩擦力是机织物在弹道冲击下的弹道性能的关键参数之一。然而，纱线间摩擦对这些织物的弹道性能的影响并未得到实证工作的认可。有两个前提来实证证明数值分析，其中织物结构和纱线机械性能和重量几乎保持不变。我们之前的研究表明，通过溶胶-凝胶处理在纱线表面形成 TiO2/ZnO 复合材料可以保持纱线机械性能和重量不受影响，但显着增加纱线间摩擦。通过这种方式，溶胶-凝胶处理产生的 TiO2/ZnO 复合材料通过浸渍-垫-干工艺涂覆到防弹织物上，以改变纱线间的摩擦力。对这些织物在460-500 m/s的冲击速度下用1克重量的圆柱形弹丸进行了弹道穿孔试验，并进行了数值模拟工作。通过弹道冲击试验和数值结果的比较，表明较高的纱线间摩擦对能量吸收更好，尤其是在更多的织物层上。数值分析和实验工作都证实，较高的纱线间摩擦将导致更大的能量吸收区域和剪切断裂变得更加明显。它表明较高的纱线间摩擦对能量吸收更好，尤其是在更多的织物层上。数值分析和实验工作都证实，较高的纱线间摩擦将导致更大的能量吸收区域和剪切断裂变得更加明显。它表明较高的纱线间摩擦对能量吸收更好，尤其是在更多的织物层上。数值分析和实验工作都证实，较高的纱线间摩擦将导致更大的能量吸收区域和剪切断裂变得更加明显。