静态张力作用下多层经纱的悬垂特征

摘要

针对多层织物织造时经纱易开口不清的问题，提出一种预估经纱下垂特征的分析模型，为表征经纱的悬垂特征提供理论参考。通过采用芳纶、碳纤维和玻璃纤维这些不同原料的纱线，以及采用不同线密度的碳纤维纱线进行了实验分析，以证实其与理论模型的相符程度。分析实验结果表明，当描述线密度较小的纱线在静态时的悬垂程度时，此经纱悬垂理论模型较为准确。然而，对于较粗的经纱，此模型还需要作进一步修正。在进行多层织造时，此研究结果可为模拟不同品种的纱线静态情况下的悬垂形态提供一定的理论参考。%During the multi⁃layer weaving process, aiming at difficulties in creating a clear shed opening passage for each warp layer, an analytical model to characterize the hanging path of each layer′s warp yarn are propsed. Experiments have also been conducted to evaluate the accurancy of this analytical model by using different yarns such as kevlar, carbon and glass fiber or by using various carbon fiber yarns such as in fineness. After the comparisons, it is found that this model suits better to describe finer yarns, however, with coarse yarns, the model lost its efficiency and need to be further modified. The outcomes from this work is to provide a useful reference to characterise the warp yarn hanging path during multi⁃layer weaving under statistic conditions.