Nonlinear deformation laws for composite threads in extension

Ismailova, Sabida; Sultanov, K. S.

doi:10.3103/s002565441505009x

Cited by 12 publications

(7 citation statements)

References 6 publications

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“…A nonlinear function    S E characterizing changes in strain modulus of the yarn is shown in Fig. 1, for a combed ring yarn with a linear density  T 29.0 tex, obtained by stretching it to breakage at a speed of 1000 mm/min, determined from the diagram    F according to the methods described in [4][5][6]. The curve in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The nonlinearity of the yarn deformation law is suspended by the replacement of it is structures during stretching. This is an experimentally proven fact even in classical works [4], it is necessary to load it into the laws of deformation of cotton yarn. This path led to the development of a physical nonlinear elastic-viscoplastic law of deformation of cotton yarn in [5].…”

Section: Introductionmentioning

confidence: 99%

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Strain characteristics of cotton yarns depending on the strain rate and methods of their manufacture

et al. 2021

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One of the main reasons for the nonlinearity of the tension diagrams of cotton yarns is the variability of their moduli of elasticity and plasticity under strain. The changes in strain moduli obtained from the tensile diagrams confirm this. The strain curve has ten parameters, the values of which depend on the method of yarn manufacture and the strain rate. Based on the results of processing the tension diagrams of cotton yarn, obtained by carded and combed systems by ring and rotor spinning (CD-carded ring-spun, OE-carded rotor-spun, CM-combed ring-spun), at strain rates from 0,0033 s-1 to 0,033 s-1, the values of these ten parameters were determined and analyzed. Their quantitative and qualitative dependence on the method of their manufacture and strain rate are shown.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Strain characteristics of cotton yarns depending on the strain rate and methods of their manufacture

et al. 2021

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“…The cleaners are divided into machines for separating large trash impurities from raw cotton (cotton stalks, boll, flap, etc.) and machines for separating small trash (leaf particles, bracts, flowers, and dust) [3,4].…”

Section: Introductionmentioning

confidence: 99%

Development of effective construction and justification of parameters of the cleaner of fibrous material

et al. 2021

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This article provides a general scheme of the principle of operation of a fibrous material cleaner from coarse and fine litter. Based on the compilation of dynamic and mathematical models, its numerical solution, the regularities of the movement of the working bodies of the purifier are presented. Analyzes of the laws of motion and graphic dependencies substantiated the main parameters of the purifier. Recommendations are given for widespread use in fiber-cleaning production.

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“…One of the main qualities of cotton yarns (hereinafter referred to as yarn) is their strength. It is known that yarns made of cotton fibers have a complex structure [7][8][9][10][11]. This structure plays a determining role in ensuring its strength.…”

Section: Introductionmentioning

confidence: 99%

Experimental determination of cotton yarn strength at different speeds of movement obtained by various technological methods

et al. 2021

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Our results on the strength parameters of cotton yarns manufactured by carded and combed systems by ring and rotor spinning (CD-carded ring-spun, OE-carded rotor-spun, CM-combed ring-spun) are presented. Experiments to test yarns for strength were conducted on a “Statimat C” tensile installation at speeds of the lower end of the yarn from 100 mm/min to 1000 mm/min. From the diagrams of yarn stretching to breaking, the changes in breaking load, specific breaking load, critical strain values at which the yarn breaks, time of stretching before breaking, depending on the strain rate for the considered types of yarns, were determined. The analysis of the experimental results obtained shows the quantitative and qualitative characteristics of the change in strength parameters of three varieties of yarns.

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Nonlinear deformation laws for composite threads in extension

Cited by 12 publications

References 6 publications

Strain characteristics of cotton yarns depending on the strain rate and methods of their manufacture

Strain characteristics of cotton yarns depending on the strain rate and methods of their manufacture

Development of effective construction and justification of parameters of the cleaner of fibrous material

Experimental determination of cotton yarn strength at different speeds of movement obtained by various technological methods

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