Method for predicting limit unevenness of resultant yarn by simulating random arrangement of equal-fineness fibers in single yarn

Abstract

The invention relates to a method for predicting the limit unevenness of a resultant yarn by simulating the random arrangement of equal-fineness fibers in a single yarn. The method comprises the following steps of calculating the total number of left ends of fibers obeying the uniform distribution in the single yarn with a certain length; randomly endowing the left end of each generated fiber with a fiber length value according to the length of the fibers and extending rightwards from the left end according to the length to obtain the arrangement of the fibers in silvers; calculating the limit unevenness of the single yarn. According to the method disclosed by the invention, the influence of the length of the fibers on the limit unevenness of the resultant yarn can be visually reflected by the single yarn generated by simulation, and thus the predication of the limit unevenness of the single yarn is realized.

Description

technical field [0001] The invention relates to the technical field of yarn performance prediction in the field of textiles, in particular to a method for simulating the random arrangement of fibers of equal fineness in single yarns and predicting the limit unevenness of yarn formation. Background technique [0002] The influence of fiber properties on yarn performance has always been a classic subject in the field of spinning. Predicting yarn quality based on fiber properties is of great significance for the rational selection of raw materials and the production of high-quality yarns. Among them, the geometric arrangement of fibers in single yarn directly reflects the uniformity of single yarn, which also affects the quality of subsequent processed textiles. [0003] At present, there have been some theoretical studies on single yarn unevenness, such as the classic Martindale unevenness formula and Suh's yarn segment unevenness formula, which only deduce the unevenness expr...

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Problems solved by technology

The literature "Statistics for the Number of Fiber Ends in A Segment of A Random Assembly of Aligned Fibers" also pointed out the influence of the fiber end on the uniformity of yarn formation, but did not give the arrangement of fibers in the yarn

In addition, the document "Stochastic Simulation of Uneven Yarn Dryness" also provides a method for simulating the arrangement of fibers of equal fineness in yarn, but it can only simulate the arrangement of known number of fibers in a limited segment length. However, the actual number of fibers in actual spinning is uncontrollable. It is necessary to find the expression of the number of fibers and the length of the segment, so that it can fully express the arrangement of fibers at any length

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