A coupled structural and flow approach for numerical simulation of the light resin transfer moulding process. I: Model outline

2014 ◽  
Vol 33 (14) ◽  
pp. 1332-1338 ◽  
Author(s):  
JR Hutchinson ◽  
PJ Schubel ◽  
R Said
Keyword(s):  
Numerical Simulation ◽  
Resin Transfer Moulding ◽  
Moulding Process ◽  
Transfer Moulding

scholarly journals Direct numerical simulation of infusion and flow-front tracking in materials with heterogeneous permeability using a pressure mapping sensor

2019 ◽  
Vol 54 (13) ◽  
pp. 1647-1661
Author(s):  
Arthur Levy ◽  
James Kratz
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Front Tracking ◽  
Resin Transfer Moulding ◽  
Flow Front ◽  
Moulding Process ◽  
Pressure Mapping ◽  
Front Position ◽  
Infusion Experiment ◽  
Transfer Moulding

This paper explores the use of thin film piezoresistive pressure mapping sensors as a means to improve resin transfer moulding processes. The pressure mapping sensor was located between the preform and mould, giving information regarding the permeability map prior to infusion. The permeability map is used as an input to a direct numerical simulation of the infusion step of a highly variable reclaimed carbon fibre preform. The pressure sensor was also used to track the flow front position in-situ, due to a change in load sharing between the preform and liquid during the infusion experiment. Flow front tracking with the pressure mapping sensor was validated against conventional camera images taken through a transparent mould. The direct numerical simulation was able to account for local permeability variation in the preform, providing improved flow-front prediction than homogeneous permeability only, and could be part of a wider strategy to improve resin transfer moulding process robustness.

Numerical simulations for class A surface finish in resin transfer moulding process

2012 ◽  
Vol 43 (2) ◽  
pp. 819-824 ◽  
Author(s):  
Geneviève Palardy ◽  
Pascal Hubert ◽  
Eduardo Ruiz ◽  
Mohsan Haider ◽  
Larry Lessard
Keyword(s):  
Numerical Simulations ◽  
Surface Finish ◽  
Resin Transfer Moulding ◽  
Moulding Process ◽  
Class A ◽  
Transfer Moulding

Permeability Prediction in the Impregnation Stage of Resin Transfer Moulding

2010 ◽  
Vol 160-162 ◽  
pp. 1211-1216
Author(s):  
Zhuang Liu ◽  
Xiao Qing Wu
Keyword(s):  
Stokes Equations ◽  
Approximate Model ◽  
Local Deformation ◽  
Resin Transfer Moulding ◽  
Moulding Process ◽  
2D Simulation ◽  
Macro Scale ◽  
Darcy Equations ◽  
Transfer Moulding ◽  
Meso Scale

The impregnation stage of the Resin Transfer Moulding process can be simulated by solving the Darcy equations on a mould model, with a ‘macro-scale’ finite element method. For every element, a local ‘meso-scale’ permeability must be determined, taking into account the local deformation of the textile reinforcement. This paper demonstrates that the meso-scale permeability can be computed efficiently and accurately by using meso-scale simulation tools. We discuss the speed and accuracy requirements dictated by the macro-scale simulations. We show that these requirements can be achieved for two meso-scale simulators, coupled with a geometrical textile reinforcement modeller. The first solver is based on a finite difference discretisation of the Stokes equations, the second uses an approximate model, based on a 2D simulation of the flow.

Numerical Prediction of Permeability Tensor for Three Dimensional Circular Braided Preform by considering Intra-tow Flow

2005 ◽  
Vol 13 (4) ◽  
pp. 323-334 ◽  
Author(s):  
Y.S. Song ◽  
K. Chung ◽  
T.J. Kang ◽  
J.R. Youn
Keyword(s):  
Control Volume ◽  
Three Dimensional ◽  
Unit Cell ◽  
Permeability Tensor ◽  
Resin Flow ◽  
Resin Transfer Moulding ◽  
Moulding Process ◽  
Flow Through ◽  
Transfer Moulding ◽  
Control Volume Finite Element

Resin transfer moulding is characterized by the permeability tensor, which is a measure of the resistance to resin flow through the preform. Complete prediction of the second order permeability tensor for three dimensional circular braided preforms is critical to an understanding of the resin transfer moulding process. The permeability can be predicted by considering resin flow through the multi-axial fibre structure. In this study, the permeability tensor for a 3-D circular braided preform was calculated by solving a boundary problem of a periodic unit cell. The flow field through the unit cell was obtained by using a 3-D control volume finite element method (CVFEM) and Darcy's law was utilized to obtain the permeability tensor. The flow analyses were carried out for two cases, one in which the fibre tow was regarded as a permeable porous medium, and one in which it was regarded as an impermeable solid. It was found that the flow within the intra-tow region of the braided preform was negligible if the inter-tow porosity was relatively high, but flow through the tow, especially flow in the thickness direction must be considered when the porosity is low. The permeability of the braided preform was measured by a radial flow experiment and compared with the predicted permeability.

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