Macro-Modelling of Rib-Knitted Tubular Parts

The aim of the research was to improve the process of knitted products design. The use of modern software helps us predict the physical and mechanical behaviour of materials, using their three-dimensional models. A macro-model of rib-knitted tubular parts was developed in the study. This model allow...

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Autores principales:	Tetiana Ielina, Liudmyla Halavska, Nataliia Ausheva
Formato:	article
Lenguaje:	EN SL
Publicado:	University of Ljubljana, Faculty for Natural Sciences and Engineering 2021
Materias:	rib stitch structures macro-models sock cuff 3d modelling Textile bleaching, dyeing, printing, etc. TP890-933
Acceso en línea:	https://doaj.org/article/3cbf35148461411591f803ef7745ce5c
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spelling	oai:doaj.org-article:3cbf35148461411591f803ef7745ce5c2021-12-02T19:45:32ZMacro-Modelling of Rib-Knitted Tubular Parts10.14502/Tekstilec2021.64.317-3240351-33862350-3696https://doaj.org/article/3cbf35148461411591f803ef7745ce5c2021-12-01T00:00:00Zhttp://www.tekstilec.si/wp-content/uploads/2021/11/10.14502Tekstilec2021.64.317-324.pdfhttps://doaj.org/toc/0351-3386https://doaj.org/toc/2350-3696The aim of the research was to improve the process of knitted products design. The use of modern software helps us predict the physical and mechanical behaviour of materials, using their three-dimensional models. A macro-model of rib-knitted tubular parts was developed in the study. This model allows its implementation into algorithms, describing the peculiarities of the stretching process. Recent findings in the field of 3D modelling and simulation of knitwear behaviour aim at working with models of different scales of structural hierarchy. The use of macro-models provides the opportunity to simplify the geometry and significantly reduce the time required for simulation. Rib stitch structures are among the most popular weft-knitted ones. When using threads of usual stretchability (with breaking elongation that does not exceed 10–12%), the stretchability of some rib stitch structures in the course-wise direction can reach up to 350% and even more. When stretched in the course direction, rib-knitted stitches undergo a number of stages. The stretching process includes: decreasing the width-wise curling; mutual shifting of knit and purl stitches; reducing the curvature of the loop feet and loop heads; pulling the yarn from the loop legs to the loop feet; stretching of the yarn. The assumption was made that such parts of knitted garments as cuffs and borders on sweaters, cuffs on socks, where rib stitch patterns are used, can be described as thin-walled elastic shells. A part of a human body surface, covered with a rib-knitted garment part, can be approximated by a truncated cone. The mid-surface of the shell can be represented as a ruled surface created upon a set of Bezier curves, located along the circumference of the upper and lower bases of the truncated cone. The mathematical description, elaborated in the course of the research, was used for the computer program LastikTube, which was developed to create 3D macro-models of ribbed tubular garments.Tetiana IelinaLiudmyla HalavskaNataliia AushevaUniversity of Ljubljana, Faculty for Natural Sciences and Engineeringarticlerib stitch structuresmacro-modelssock cuff3d modellingTextile bleaching, dyeing, printing, etc.TP890-933ENSLTekstilec, Vol 64, Iss 4, Pp 317-324 (2021)
institution	DOAJ
collection	DOAJ
language	EN SL
topic	rib stitch structures macro-models sock cuff 3d modelling Textile bleaching, dyeing, printing, etc. TP890-933
spellingShingle	rib stitch structures macro-models sock cuff 3d modelling Textile bleaching, dyeing, printing, etc. TP890-933 Tetiana Ielina Liudmyla Halavska Nataliia Ausheva Macro-Modelling of Rib-Knitted Tubular Parts
description	The aim of the research was to improve the process of knitted products design. The use of modern software helps us predict the physical and mechanical behaviour of materials, using their three-dimensional models. A macro-model of rib-knitted tubular parts was developed in the study. This model allows its implementation into algorithms, describing the peculiarities of the stretching process. Recent findings in the field of 3D modelling and simulation of knitwear behaviour aim at working with models of different scales of structural hierarchy. The use of macro-models provides the opportunity to simplify the geometry and significantly reduce the time required for simulation. Rib stitch structures are among the most popular weft-knitted ones. When using threads of usual stretchability (with breaking elongation that does not exceed 10–12%), the stretchability of some rib stitch structures in the course-wise direction can reach up to 350% and even more. When stretched in the course direction, rib-knitted stitches undergo a number of stages. The stretching process includes: decreasing the width-wise curling; mutual shifting of knit and purl stitches; reducing the curvature of the loop feet and loop heads; pulling the yarn from the loop legs to the loop feet; stretching of the yarn. The assumption was made that such parts of knitted garments as cuffs and borders on sweaters, cuffs on socks, where rib stitch patterns are used, can be described as thin-walled elastic shells. A part of a human body surface, covered with a rib-knitted garment part, can be approximated by a truncated cone. The mid-surface of the shell can be represented as a ruled surface created upon a set of Bezier curves, located along the circumference of the upper and lower bases of the truncated cone. The mathematical description, elaborated in the course of the research, was used for the computer program LastikTube, which was developed to create 3D macro-models of ribbed tubular garments.
format	article
author	Tetiana Ielina Liudmyla Halavska Nataliia Ausheva
author_facet	Tetiana Ielina Liudmyla Halavska Nataliia Ausheva
author_sort	Tetiana Ielina
title	Macro-Modelling of Rib-Knitted Tubular Parts
title_short	Macro-Modelling of Rib-Knitted Tubular Parts
title_full	Macro-Modelling of Rib-Knitted Tubular Parts
title_fullStr	Macro-Modelling of Rib-Knitted Tubular Parts
title_full_unstemmed	Macro-Modelling of Rib-Knitted Tubular Parts
title_sort	macro-modelling of rib-knitted tubular parts
publisher	University of Ljubljana, Faculty for Natural Sciences and Engineering
publishDate	2021
url	https://doaj.org/article/3cbf35148461411591f803ef7745ce5c
work_keys_str_mv	AT tetianaielina macromodellingofribknittedtubularparts AT liudmylahalavska macromodellingofribknittedtubularparts AT nataliiaausheva macromodellingofribknittedtubularparts
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Macro-Modelling of Rib-Knitted Tubular Parts

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