Method for predicting breaking strength of resultant yarns by means of simulating random arrangement of equal-fineness fibers in single yarns

Abstract

The invention relates to a method for predicting breaking strength of resultant yarns by means of simulating random arrangement of equal-fineness fibers in single yarns. The method includes steps of computing the total amount of left head ends of the fibers which are uniformly distributed in the single yarns with the certain lengths; distributing a randomly given fiber length value to the left head end of each generated fiber according to the length of the fiber, and rightwards extending the left head end of each fiber according to the length of the fiber to obtain arrangement of the fiber in a corresponding silver; judging slipping or breaking states of various section fibers of the single yarns to compute breaking strength values of the simulated single yarns. The method has the advantages that influence of the lengths of the fibers on the breaking strength of the single yarns can be quantitatively and visually reflected by the single yarns which are generated by means of simulation, and accordingly the method can be applied to predicting the breaking strength of the single yarns.

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 equal-fineness fibers in single yarns to predict the breaking strength of yarns. Background technique [0002] The mechanical properties of the fiber directly affect the mechanical properties of the yarn, and then affect the mechanical properties of the final fabric. Breaking strength is one of the important indicators affecting yarn performance. Over the years, many textile scientists have devoted themselves to the analysis and prediction of the influencing factors of yarn strength. For example, the fiber length greatly affects the strength of the single yarn and the efficiency of the strength of the single yarn. In addition, the arrangement of fibers in the single yarn also determines the evenness of the single yarn, the strength of the single yarn and other properties, which also a...

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Problems solved by technology

At present, many strength models have been established in the research on the mechanism of yarn breakage. However, there are many parameters that are difficult to measure and characterize in these models, and the strength expressions of these models are too complicated to be calculated, so they are not suitable for practical quantitative applications.

In addition, the literature "Influence of Fiber Length Distribution on Strength Efficiency of Fibers in Yarn" established a single yarn strength model with a length distribution function using a geometric method, but this model only qualitatively describes the relationship between fiber length and single yarn breaking strength. , and this model is established under the assumption that the number of fibers in each section of a single yarn is equal, without considering the arrangement of fibers in a single yarn

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