Bending Mechanics of Ply Yarns

Park, Jung-Whan; Oh, Ae-Gyeong

doi:10.1177/004051750307300602

Cited by 11 publications

(6 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Among the properties improved by yarn folding, those of the greatest importance for the performance of textile materials are yarn evenness (uniform diameter), strength (and strength variation), liveliness (the reduction of residual torque), and yarn’s surface characteristics (hairiness). The characteristics of folded yarns have drawn the attention of many scientists from the 1950s to today (Bennett & Postle, 1979; Honold & Grant, 1961; Milosavljevic, Tadic, & Stankovic, 1998; Park & Oh, 2003; Skau, Honold, & Boudreau, 1958; Xia, Xu, & Wang, 2012). However, there is a serious lack of study about the effects of folded yarns on the properties of textile materials, especially those concerned with comfort properties.…”

mentioning

confidence: 99%

Effect of Yarn Folding on Comfort Properties of Hemp Knitted Fabrics

Stanković

Bizjak

2014

Clothing and Textiles Research Journal

View full text Add to dashboard Cite

The operation of folding provides a complex yarn differing to an appreciable degree from single components. Although the characteristics of folded yarns have been the subject of many investigations, there is a serious lack of study concerned with the influence of yarn folding on comfort properties of clothing materials. Therefore, this study focused on the effect of yarn folding on both thermal and tactile comfort of plain knitted fabrics. In addition to the structural characteristics of the yarns and knitted fabrics, the transport properties, deformation behavior and surface properties of the knitted fabrics were investigated. The results obtained indicated that the influence of yarn folding on thermal and tactile comfort properties of clothing materials is mainly positive. These effects were caused by the modification of yarn packing density which further influenced the air volume distribution as well as the fiber and yarn mobility within the fabric.

show abstract

mentioning

confidence: 99%

Effect of Yarn Folding on Comfort Properties of Hemp Knitted Fabrics

Stanković

Bizjak

2014

Clothing and Textiles Research Journal

View full text Add to dashboard Cite

show abstract

“…Ancak pratikte büküm iþlemi spiraller oluþturarak temas bölgelerinde iplik eksenlerinin merkezlerine doðru basýnç uygulamaktadýr. Bu basýnç da iplik yapýlarýný oluþturan lifleri birbirine yaklaþtýrarak birbirine olan temas yüzeyini ve temas kuvvetini arttýrmaktadýr [4]. Bu durum iplik içi lif kohezyonunu artýrmakta dolayýsýyla da iplik mukavemeti arttýr-maktadýr.…”

Section: Materyal Ve Metodunclassified

Eş Zamanlı Uygulanan Katlama ve Büküm İşleminin Katlı İplik Özellikleri Üzerindeki Etkisi

Yılmaz¹,

Babaarslan²,

Mörel³

2012

Tekstil ve Mühendis

View full text Add to dashboard Cite

Tekstil sektörünün temel materyali olan iplik, eðirme sistemlerinde genellikle tek kat olarak üretilmektedir. Bu tek kat ipliklerin bazý teknik sýnýrlamalar sebebi ile gösterebilecekleri fiziksel özellikler sýnýrlý olabilmektedir. Bununla birlikte gün geçtikçe iplik yapýlarýndan beklenen fiziksel özelliklerde artmaktadýr. Bu nedenle tek kat olarak üretilen ipliklerin fiziksel ihtiyaçlarý tam olarak karþýlayamadýðý durumlar oluþabilmektedir. Günümüzde bu sorunu gidermek amacýyla katlama ve büküm prosesleri iplik yapýlarýnýn fiziksel özelliklerini geliþtirmek adýna sýkça kullanýlan iþlemler haline gelmiþtir. Bu çalýþmada, farklý harmanlarda ve ayný üretim parametreleri ile üretilmiþ olan tek kat ring ipliklerinin direkt büküm iþlemi sonrasýnda özelliklerinde meydana gelen deðiþiklikler deneysel olarak incelenmiþtir. Çalýþma sonucunda büküm iþlemi, düzgünsüzlük (%U), düzgünsüzlük katsayýsý (%CV) ve tüylülük (S3) deðerlerinde tüm numune gruplarý üzerinde iyileþtirme gösterirken, iplik hatalarý, kopma mukavemeti ve kopma uzamasý (%) deðerlerinde tüm harman gruplarý için iyileþtirme saðlayamadýðý görülmüþtür.

show abstract

“…As a result, the fibers at the core of the yarn tend to have little relative movement, and the yarn as a whole resists stretching. Much research has been done in the textile community on fiber-level models of yarn and how the interactions at the fiber level lead to yarn-level behavior, particularly bending rigidity [Park and Oh 2003;Park and Oh 2006]. In particular, Choi and Tandon [2006] develop a model of a multi-ply yarn, showing that their model reasonably approximates experimental results and predicts the strain energy of bending to be approximately quadratic with respect to the curvature.…”

Section: Structure Of Knitted Clothmentioning

confidence: 99%

Simulating knitted cloth at the yarn level

2008

View full text Add to dashboard Cite

Figure 1: Yarn-level cloth: Three knitting patterns relaxed to rest in our simulator. Each starts from a flat input configuration like at left; they differ only in their interlocking patterns. Characteristic shapes and textures of each knit emerge from our yarn-level physical model. AbstractKnitted fabric is widely used in clothing because of its unique and stretchy behavior, which is fundamentally different from the behavior of woven cloth. The properties of knits come from the nonlinear, three-dimensional kinematics of long, inter-looping yarns, and despite significant advances in cloth animation we still do not know how to simulate knitted fabric faithfully. Existing cloth simulators mainly adopt elastic-sheet mechanical models inspired by woven materials, focusing less on the model itself than on important simulation challenges such as efficiency, stability, and robustness. We define a new computational model for knits in terms of the motion of yarns, rather than the motion of a sheet. Each yarn is modeled as an inextensible, yet otherwise flexible, B-spline tube. To simulate complex knitted garments, we propose an implicit-explicit integrator, with yarn inextensibility constraints imposed using efficient projections. Friction among yarns is approximated using rigid-body velocity filters, and key yarn-yarn interactions are mediated by stiff penalty forces. Our results show that this simple model predicts the key mechanical properties of different knits, as demonstrated by qualitative comparisons to observed deformations of actual samples in the laboratory, and that the simulator can scale up to substantial animations with complex dynamic motion.

show abstract

Bending Mechanics of Ply Yarns

Cited by 11 publications

References 6 publications

Effect of Yarn Folding on Comfort Properties of Hemp Knitted Fabrics

Effect of Yarn Folding on Comfort Properties of Hemp Knitted Fabrics

Eş Zamanlı Uygulanan Katlama ve Büküm İşleminin Katlı İplik Özellikleri Üzerindeki Etkisi

Simulating knitted cloth at the yarn level

Contact Info

Product

Resources

About