geometric modelling of textiles - texgen

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Geometric Modelling ofTextiles

Martin SherburnSupervised byProfessor Andrew LongDr. Arthur Jones

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Introduction

Geometric modelling- Types of textile architecture- Modelling strategy- Implementation (TexGen)- GUI- Python interface

- Current developments- Applications- Distribution

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Types of textile architecture

2D Weave 3D Weave

Triaxial braid Weft-knitNon-crimp fabric

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Modelling strategy

Yarn centreline represented by a spline

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Modelling strategy

Yarn cross-section defined as aparametric equation in two dimensions

Ellipse

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Modelling strategy


Power ellipse

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Modelling strategy


Lenticular

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Modelling strategy

Yarn surface is defined as a parametricequation of two variables combining thecentreline and cross-section equations

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Modelling strategy

Yarn with varying cross-section along itslength demonstrating modelling flexibility

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Progress



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Implementation

Written in C++ with the use of various 3rd

party open source libraries

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Graphical user interface

Windows

Linux

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Python interface

Python is a popular high-levelprogramming language

Ideal for batch processing andautomation of tasks commonlyperformed manually

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Progress



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Current developments

Volume meshing algorithm implemented in TexGen

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Current developments

Geometry solving algorithm using a combinationof spring elements to model contact forces andplate elements to model yarn bending

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Applications

Textile mechanics Textile permeability Textile composites mechanics Textile composite heat transfer Textile composite viscous forming …

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Distribution

TexGen released as open sourcesoftware licensed under GNU PublicLicense (GPL)

Hosted on SourceForge: acollaborative revision control andsoftware development managementsystem.

http://texgen.sourceforge.net/

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Distribution

Online facilities: Wiki website containing TexGen

documentation, applications and usersubmitted scripts in the future.

Forum for discussion, help and feedback. Subversion version control. Download mirrors located all around the

world. Tracker system for feature requests, bug

reports and user submitted patches.

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Distribution

SourceForge statistics

Total downloads since October 2006: 587

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Distribution

SourceForge statistics

Total website hits since October 2006: 84,076

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Conclusions

A geometric modelling softwarepackaged named TexGen has beendeveloped and distributed over theinternet as open source for all touse, extend and/or modify.

geometric modelling of textiles - texgen

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