通过对圆形截面纤维纺丝动力学基本方程的修正及扁平纤维形变方程的推导,建立了扁平纤维纺丝成形的数学模型,并进行了计算机模拟,其结果与Takarada等学者研究结果相一致。模拟纺丝结果表明,增加单孔质量流量,降低纺丝温度及侧吹风起始高度,纤维长宽比提高;喷丝孔的长宽比增大,纤维长宽比大幅度降低。 The mathematical model of flat fiber spinning and forming was established by amending the basic equations of circular fiber spinning dynamics and the derivation of flat fiber deformation equation. The results were in good agreement with the results of Takarada et al. The results of simulated spinning show that increasing the single-hole mass flow rate, decreasing the spinning temperature and the starting height of the side blowing air leads to an increase in the fiber aspect ratio; the aspect ratio of the spinning hole increases and the fiber aspect ratio decreases significantly.