机织织物剪切行为研究

 研究了平纹碳纤维机织织物的剪切行为。研究发现，织物的分阶段剪切行为与织物的细观结构有关，不同的剪切阶段具有不同的剪切机理，通过XLT-3400连续变体式显微镜和像框实验结果对不同剪切阶段的剪切机理进行了分析。通过纱线抽出实验获得了织物中纱线之间的摩擦系数,将纱线当作一个悬臂梁安装，通过此方法获得了纱线的抗弯刚度，由这两个实验导出了摩擦力矩。利用像框剪切实验以及力矩平衡，建立了平纹织物初始剪切阶段载荷 剪切角的关系模型。实验结果表明，此模型可以很好地模拟剪切角度超过0.05 rad之后的织物初始剪切行为。

Research on the Shear Behavior for Woven Fabrics

The shear behavior of plain carbon woven fabric was studied.The results show that the staged shear behavior of fabric is related to its mesoscopic structure and there is different shear mechanisms at different shear stage.From the results of the XLT-3400 serial variant microscope and picture frame experiment,the shear mechanisms at different stages are analyzed.The coefficient of yarn friction was obtained by yarn pull-out experiment and a yarn from the plain fabric was installed as a cantilever and the bending rigidity was measured in this way,from which the friction moment was obtained.Through the picture frame experiment and moment balance,a load-shear angle model was derived for plain fabric at the beginning of the shear stage.The experiments results show that the model can simulate the beginning shear stage for plain fabric well after the shear angle is over 0.05 radian.