Abstract:

Obtaining the dynamic behavior of fibers in the drafting zone through various simulation approaches is one of the important contents for the investigation of roll drafting. In consideration of fiber length distribution, the attenuation curve of the sliver in the drafting zone is given by using the method of parabolic density function for accelerated points proposed by previous researchers. Simulated results of the attenuation curves of the silver are discussed under different parameters such as drafting ratio, and fiber length distribution. The simulated curves of fiber proportions in the fast drafting zone and the slow drafting zone are presented. For a given fiber length distribution, the number of fiber and the CV of these fibers at the front nip are simulated. The simulated results are in good agreement with previous simulated data. This research lays a foundation for the prediction of drafted unevenness of the output slivers.