A Monolithic Finite Element Approach to Compute Permeabilityatc Microscopic Scales in LCM Processes

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Submitted on 14 Aug 2013

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Permeabilityatc Microscopic Scales in LCM Processes

Luisa Silva, Grégory Puaux, Michel Vincent, Patrice Laure

To cite this version:

Luisa Silva, Grégory Puaux, Michel Vincent, Patrice Laure. A Monolithic Finite Element Approach

to Compute Permeabilityatc Microscopic Scales in LCM Processes. 13th ESAFORM Conference on

Material Forming, Apr 2010, Brescia, Italy. pp.Pages 619-622, �10.1007/s12289-010-0846-5�. �hal-

00614110�

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A MONOLITHIC FINITE ELEMENT APPROACH TO COMPUTE PERMEABILITYAT MICROSCOPIC SCALES IN LCM PROCESSES 2 2

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Figure 2: Example of computational domains (REVs) at the micro (left) and meso (right) scales. In the left, the micro-scale: red represents the fibre and blue the resin.

In the right, interfaces between yarns and resin are represented through the isosurface of zero value of α ^on the background mesh

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222 Figure 4: Different sizes of RVE for permeability

computation

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Figure 6: Mesh sensitivity analysis – Evolution of the permeability computed value (in red), for a total number of elements that vary from 5000 to 200000 in the isotropic case (left) and from 5000 to 20000 in the anisotropic one (right); in green, Gebart’s value for the transverse permeability

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2 Figure 7: REV configurations studied.

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22 Figure 8: Evolution of the transverse permeability with the fibre volume fraction, our results are referenced as

“monolithique”.

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