Modeling and deformation simulation of weft knitted fabric at yarn level

Ru, Xin; Wang, Jia C; Peng, Laihu; Shi, Wei‐Min; Hu, Xudong

doi:10.1177/00405175221134934

Cited by 4 publications

(3 citation statements)

References 22 publications

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“…Stitch-level simulations (also known as loop modeling) have been of interest to a variety of fields, including textile engineering and metamaterials. Current simulations typically have at least one of three primary limiting factors: they do not consider compressible yarn 45 , 54 , 55 , they only consider one type of fabric 20 , 45 , 54 – 56 , or they only compare simulation to experimental results for visual fidelity and not mechanical response 37 , 57 . Our simulation method considers all three of these factors to investigate the role of stitch topology on the mechanical behavior of knit fabrics.…”

Section: Resultsmentioning

confidence: 99%

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Programming mechanics in knitted materials, stitch by stitch

Singal,

Dimitriyev,

Gonzalez

et al. 2024

Nat Commun

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Knitting turns yarn, a 1D material, into a 2D fabric that is flexible, durable, and can be patterned to adopt a wide range of 3D geometries. Like other mechanical metamaterials, the elasticity of knitted fabrics is an emergent property of the local stitch topology and pattern that cannot solely be attributed to the yarn itself. Thus, knitting can be viewed as an additive manufacturing technique that allows for stitch-by-stitch programming of elastic properties and has applications in many fields ranging from soft robotics and wearable electronics to engineered tissue and architected materials. However, predicting these mechanical properties based on the stitch type remains elusive. Here we untangle the relationship between changes in stitch topology and emergent elasticity in several types of knitted fabrics. We combine experiment and simulation to construct a constitutive model for the nonlinear bulk response of these fabrics. This model serves as a basis for composite fabrics with bespoke mechanical properties, which crucially do not depend on the constituent yarn.

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Section: Resultsmentioning

confidence: 99%

“…response 37,57 . Our simulation method considers all three of these factors to investigate the role of stitch topology on the mechanical behavior of knit fabrics.…”

Section: Numerical Modelmentioning

confidence: 99%

Programming mechanics in knitted materials, stitch by stitch

Singal,

Dimitriyev,

Gonzalez

et al. 2024

Nat Commun

View full text Add to dashboard Cite

show abstract

“…Te simulation calculation based on the spring mass model is fast. Te control point coordinates are calculated according to the four vertices of the spring mass model, and the loop modeling combined with the spline curve can conveniently achieve the real-time deformation simulation of weft knitting loop [13][14][15]. Te deformation of weft knitting loops is also studied by means of spiral, elastic rod, and topological loop deformation modeling methods [9,16,17].…”

Section: Introductionmentioning

confidence: 99%

Simulation of Weft Knitted Fabric Using Three‐Dimensional Yarn Loops and Grid and Spring Mass Models

et al. 2023

Advances in Materials Science and Engineering

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The existing knitted fabric simulation methods cannot be effectively applied to three-dimensional (3D) modeling and simulation of weft knitted garments due to the lack of simple and convenient 3D dynamic simulation models for weft knitted fabrics. This paper presents a method of constructing a loop model by coupling the grid model with the spring mass model. The simulation of weft knitted fabric with real effects was achieved through the coupled model construction of the loop model combined with the yarn simulation generation algorithm and yarn collision response algorithm. The method presented in this paper can quickly and simply simulate the design of weft knitted clothing with loop structure. It provides a reference for the 3D simulation design of weft knitted fabric.

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Yarn-level modeling and simulation of fancy weft-knitted fabric

Ru,

Zheng,

Peng

et al. 2024

Textile Research Journal

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Weft-knitted fabric is formed by interlocking loops, which results in an unstable and easily deformable structure. In particular, fancy weft-knitted fabric exhibits diverse structural variations and uneven distribution, leading to more prominent characteristics of instability and deformation. Achieving the desired pattern effect and dimensions often requires drawing multiple designs. In this work, to obtain the geometric model of fancy fabric, mesh-loop models with movement vectors are established based on the basic structure of four stitch types: plain stitch, tuck, float, and loop transfer. The cubic Catmull–Rom spline curves are used to fit the geometric centerline of the yarn. The movement vectors are used to represent the changes in the position of the key points of the standard loops in the fancy fabric, which are derived from the analysis of the pattern grid. A physical model is established based on the force analysis of the yarn, and the positions of yarn control points are determined by solving the Euler–Lagrange dynamic equations. Through iterative calculations, the deformation effects of the fabric are obtained, enabling the simulation of fancy weft-knitted fabric. The proposed algorithms were implemented using Visual C++. The reliability and accuracy of the simulation method are demonstrated by comparing the contours of the simulation results with the actual samples.

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Modeling and deformation simulation of weft knitted fabric at yarn level

Cited by 4 publications

References 22 publications

Programming mechanics in knitted materials, stitch by stitch

Programming mechanics in knitted materials, stitch by stitch

Simulation of Weft Knitted Fabric Using Three‐Dimensional Yarn Loops and Grid and Spring Mass Models

Yarn-level modeling and simulation of fancy weft-knitted fabric

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