During the air flow twisting process of jet vortex spinning, the moving characteristics of flexible free-end fiber are complex. In this paper, the finite element model of the fiber is established based on elastic thin rod element. According to the air pressure and velocity distribution in the airflow twisting chamber of jet vortex spinning, this paper analyzes the undetermined coefficients of the finite element kinetic differential equation of the free-end fiber following the principle of mechanical equilibrium, energy conservation, mass conservation and momentum conservation. Based on numerical simulation, this paper gets the trajectory of the free-end fiber. Finally, the theoretical result of the free-end fiber trajectory by finite element simulating is tested by an experimental method. This paper has proposed a new method to study the movement of the fiber and learn about the process and principle of jet vortex spinning.
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 Beceren, Y., Nergis, B. U. (2008). Comparison of the effects of cotton yarns produced by new, modified and conventional spinning systems on yarn and knitted fabric performance. Textile Research Journal, 78(4), 297-303.
 Basal, G., Oxenham, W. (2006). Effects of some process parameters on the structure and properties of vortex spun yarn. Textile Research Journal, 76(6), 492-499.
 Tyagi, G. K., Sharma, D., Salhotra, K. R. (2004). Process-structure-property relationship of polyester-cotton MVS yarns: part i - influence of processing variables on yarn structural parameters. Indian Journal of Fibre & Textile Research, 29(4), 419-428.
 Li, Y. X., (2005). Jet vortex spinning exploration. China Textile Leader, (8), 69-67.
 Yuan, L. C., Li, X. R., Guo, Z., Jiang, X. M. (2018). Research progress in influence of vortex spinning nozzle on flow field. Journal of Textile Research, 39(1), 169-178.
 Ortlek, H. G., Nair, F., Kilik, R., Guven, K. (2008). Effect of spindle diameter and spindle working period on the properties of 100% viscose MVS yarns. Fibres & Textiles in Eastern Europe, 16(3), 17-20.
 Liu, Y., Xu, L., (2006). Controlling air vortex in air-vortex spinning by zeng-he mode. International Journal of Nonlinear Sciences and Numerical Simulation, 7(4), 389-392.
 Guo, H. F., An, X. L., Yu, Z. S., Yu, C. W. (2008). A numerical and experimental study on the effect of the cone angle of the spindle in murata vortex spinning macgine. ASME Journal of Fluids Engineering, 130(3), 1-5.
 Zou, Z. Y., Liu, S. R., Zheng, S. M., Cheng, L. D. (2010). Numerical computation of a flow field affected by the process parameters of murata vortex spinning. Fibres & Textile in Eastern Europe, 18(2), 35-39.
 Liu, Y. Z. (2006). Nonlinear mechanics of elastic thin rods. (1ed). Tsinghua University Press (Beijing).
 Hong, J. Z., (1999). Calculation of multi-system dynamics. (1ed). Higher Education Press (Beijing).
 Xia, D. L. (1990). The forming principle of isometric conical helix and the drawing method of projection. Journal of Hefei University of Technology (Natural Science), 13(3), 99-106.
 Xia, D. L. (1992). Geometric Characteristics and mapping method of conical spiral stepped helix. Journal of Hefei University of Technology (Natural Science), 15(4), 138-145.
 Xu, S. D., Wang, X. (2012). Discussion on two methods evaluation yarn evenness. Cotton Textile Technology, (12), 29-31.