中文摘要：

为了改进现有纱线条干均匀度测试仪在预测织物外观质量上的缺陷,对棉型平纹织物织造过程中的纱线截面面积、纱线截面周长、纤维空隙率、纱线压扁率,纱线密度等纱线截面参数的变化建立分析模型并优选参数,并采用有限元分析和实验论证的方法,进一步分析织造过程中纱线截面面积及周长的变化。通过分析得出,在纱线到织物的织造变形过程中,纱线截面周长的变化远小于其截面面积的变化,纱线截面面积的变化率约是纱线截面周长变化率的2-3倍。通过对纱线截面椭圆长轴与其截面周长、截面面积分别进行相关性分析,得出纱线截面周长与椭圆长轴呈弱相关,纱线截面面积与长轴间无相关性。

英文摘要：

In order to overcome drawbacks of the conventional yarn evenness tester in predicting fabric appearance quality, this paper presents the characterization of the individual yarn deformation and its influence on the resulting quality of the fabric appearance. In the model, the yarn deformation parameters such as the cross-sectional area, the yarn cross-sectional perimeter, the void ratio, the yarn flattening ratio f and yarn density were evaluated. Using mathematical modeling, the cross-sectional area and perimeter were presumed as the critical yarn cross-sectional parameters for predicting the fabric appearance quality. Then the finite element modeling （FEM） method and experiment verification were performed to analyze the variation of the cross-sectional area and perimeter in the process of weaving. The results show that the cross-sectional area varhes almost 2 to 3 times greater than the cross-sectional perimeter. The correlation analysis among the major ellipse radius, the cross-sectional perimeter, and the cross-sectional area are further conducted. The findings reveal a weak correlation between major ellipse radius and cross-sectional perimeter, while major ellipse radius and cross-sectional area are uncorrelated.