Study on the tensile behavior of helical auxetic yarns by modeling and mechanical analysis

Liu, Sai; Du, Zhaoqun; Liu, Gui; Pan, Xingxing; Li, Tianyuan

doi:10.1080/00405000.2020.1827580

Cited by 8 publications

(7 citation statements)

References 21 publications

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“…The big tensile modulus difference between the two components results in position exchange and deformation behaviour [35]. The outer contour improvement during stress is influenced by the wrap filament's tensile modulus.…”

Section: Tensile Modulus Of Stiff Yarnmentioning

confidence: 99%

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Auxetic Yarn: Fundamentals, Influencing Parameters, Application Areas and Challenges

Khan¹,

Siddique²,

Begum³

2021

TLR

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The mechanical behaviour of auxetic materials and structures is the most distinctive characteristic, which differs from that of conventional engineering materials due to the negative Poisson’s ratio. Auxetic materials have the fascinating feature of widening when stretched and contracting when compressed. In recent times, the research of auxetic materials based on textile structures has received a lot of interest. Auxetic effect development at the yarn phase is a new and exciting field of study. Many researchers already developed different types of auxetic yarns, such as the helical auxetic yarn, the plied auxetic yarn, the semi-auxetic yarn etc. The helical auxetic yarn (HAY) is the most commonly mentioned auxetic yarn. It is made up of a rigid wrap and an elastic core yarn. However, it is interesting that auxetic yarns can be produced from conventional non-auxetic fibres through the conventional spinning system as well. The helical auxetic yarn is a new type of yarn with a wide variety of possible applications. Moreover, pore-opening characteristics of auxetic yarns make it a potential candidate in the fields of technical textiles, such as medical textiles, filter application, protective textiles etc. Fabrication of auxetic textiles by utilizing auxetic yarns through simple weaving and knitting technology opens the door to new applications. The aim of this paper is to address the fundamentals of auxetic yarns, such as structure, shortcomings, production techniques, as well as the influencing process parameters. From various research works, it is evident that the wrap helical angle, the core/wrap diameter ratio, and the initial moduli of wrap component are the most vital processing parameters during the production of auxetic yarns. Finally, some potential application areas and challenges of auxetic yarns are also addressed briefly in this paper.

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Section: Tensile Modulus Of Stiff Yarnmentioning

confidence: 99%

“…Figure13. Manufacturing process of a) plied auxetic yarn[35] and b) semi-coextruded auxetic yarn[33] …”

mentioning

confidence: 99%

Auxetic Yarn: Fundamentals, Influencing Parameters, Application Areas and Challenges

Khan¹,

Siddique²,

Begum³

2021

TLR

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show abstract

“…The effectiveness of the model was also demonstrated by comparing it with experiments and geometry results. 20 Razbin et al 2 analyzed and predicted the maximum negative Poisson's ratio value of the helical auxetic yarn using the semiempirical model and the artificial neural network model, respectively. By comparing the theoretical prediction results with the experimental results, it is found that the artificial neural network model has a lower error compared with the semi-empirical model, while the accuracy of the semi-empirical model is better than that of the geometrical model.…”

mentioning

confidence: 99%

Tensile theoretical modeling and auxetic behavior analyzing of negative Poisson’s ratio yarn

Chen,

Wen,

Liu

et al. 2024

Textile Research Journal

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In this paper, the tensile models of the negative Poisson’s ratio yarn with incompressible component yarn and compressible component yarn are constructed. The theoretical Poisson’s ratio curves exhibit the same trend as the experiment. Compared with the theoretical model of incompressible component yarns, a 14% reduction was found in the maximum negative Poisson’s ratio value in the compressible component yarns model. Additionally, the modified theoretical model was established to improve further the accuracy of the model. Both the variation trend and Poisson’s ratio value of the theoretical curves are highly consistent with the experimental results, and the average difference rate of the maximum Poisson’s ratio value is below 10%, which proves the effectiveness of the corrected theoretical model in predicting the auxetic behavior. Our theoretical model not only considers the initial helical path of the wrap yarn could not be completely horizontally straightened when it is just subject to an axial tensile force but also takes the influence of component yarn sectional shape changes into account. The as-constructed theoretical model is more realistic and can guide the design of negative Poisson’s ratio yarn and optimize the theoretical modeling method.

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“…To be more specific, the staple fibers in the composite yarn tend to slip during the stress-strain process and make almost no contribution to the strength of the composite yarn. [1][2][3] This introduces many restrictions to the subsequent process.…”

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confidence: 99%

Viscoelastic tensile model of core/wrapped composite yarn with double filament

Yang

Zhang

et al. 2023

Textile Research Journal

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Viscoelastic models are typically employed to investigate the mechanical properties of yarn. In this study, a viscoelastic model was developed to predict the tensile stress–strain relationship of a core/wrapped composite yarn with double filaments. The tensile properties of the yarn were tested, and various stages of the tensile curve were analyzed. Moreover, based on the tensile fracture characteristics, a five-element nonlinear viscoelastic model comprising Kelvin element, Maxwell element, and linear springs was established. Furthermore, the tensile properties of the composite yarns were simulated and calculated using the developed model. Additionally, the stress–strain relationship was fitted using a polynomial on the basis of the established model. The results reveal that the tensile fracture curve of the composite yarn comprises three stages. They are a small strain linear stage, a large strain stage, and a strength fluctuation stage. The viscoelastic tensile model can decently explain the three-stage stress–strain characteristics of the composite yarn tensile curve. The theoretical results were consistent with the experimental results, and the correlation coefficient was greater than 0.999. Based on the results, the proposed model can be employed with high accuracy to predict the tensile properties of a core/wrapped composite yarn with a double filament.

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Study on the tensile behavior of helical auxetic yarns by modeling and mechanical analysis

Cited by 8 publications

References 21 publications

Auxetic Yarn: Fundamentals, Influencing Parameters, Application Areas and Challenges

Auxetic Yarn: Fundamentals, Influencing Parameters, Application Areas and Challenges

Tensile theoretical modeling and auxetic behavior analyzing of negative Poisson’s ratio yarn

Viscoelastic tensile model of core/wrapped composite yarn with double filament

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