Simulation Tests of the Feeding System Dynamics on a Warp Knitting Machine with Four Needle Bars

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Simulation Tests of the Feeding System Dynamics on a Warp Knitting Machine with Four Needle Bars

Journal Title: Fibres and Textiles in Eastern Europe - Year 2015, Vol 23, Issue 4

Abstract

The article describes simulation tests of the basic element forming a spacer knitted structure in a newly-designed warp knitting machine with 4 guide needle bars. It refers to a concept of forming 3D knitted fabrics already developed. In the first part of the article, the introduction, a geometric-kinematic model of the feeding and knitting zones is described. In the next part, the main one, a dynamic model of the key area isolated, that is the arrangement: beam–whip roll–guide needle bar of the filling, is presented. The method of performing simulation tests of the model is described. Its susceptibility to input values in the range of values accepted was studied. The times of phases of the kinematic cycle, stiffness, damping, initial load of the model elements and their mass were changed, variations in the initial values were registered: forces in warp threads, as well as the driving force and power. The significance of the research results for further stages of constructing 3D warp knitting machines, mainly for the selection of driving actuators of the machine, is highlighted.

Authors and Affiliations

Andrzej Michalak, Maciej Kuchar, Zbigniew Mikołajczyk

Keywords

Material Characterization of Roselle Fibre ([i]Hibiscus sabdariffa [/i]L.) as Potential Reinforcement Material for Polymer Composites

[i][/i]Recently, in line with rising environmental concerns, researchers are now replacing synthetic fibres with natural ones as the main component in composites. Natural fibres are preferred to synthetic fibres because...

EP ID EP69025
DOI -
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