Textile mechanics

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Figure 1. Chomarat 800S4-F1 satin weave fabric meshed with TexGen compressed with in-house FE solver

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Figure 2. Effect of fabric thickness on a plain weave unit cell compression

TexGen has been used to create the geometry of fabrics for meso-scale textile mechanics modelling. Meshing can either be done directly within TexGen or geometry can be exported to the two most common CAD exchange file formats, IGES and STEP. Alternatively Python scripts can be used to transfer geometry to specific third party applications such as ABAQUS.

Commercial fabrics have been modelled in which textiles were meshed and the exported to the ABAQUS finite element analysis package. Deformations were predicted for fabric unit cells in tension, compression, shear and bending, utilising their measured equivalents for individual yarns as input data. Fig 1 below shows a modelled deformed twill weave unit cell in tension, compression, shear and bending. Fig 2 shows experimental data verse FE predictions for the mechanical properties.