Enhancements of the simulation method on the edge effect in resin transfer molding processes

Yang, Junying; Jia, Yu; Sun, Sheng; Dong, Jun; Shi, Tong; Li, An

doi:10.1016/j.msea.2007.07.044

Cited by 15 publications

(14 citation statements)

References 21 publications

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“…For the RTM flow front line advancement determination in a single fluid model with the FE-CV method, the FAN technique is normally used (Bruschke and Advani, 1990;Souza et al, 2008). The VOF method is usually applied to track the flow front interface between resin and air in two phases RTM models (Shojaei, Ghaffarian and Karimian, 2004;Yang et al, 2008).…”

Section: Paper Received 25 February 2011 Paper Accepted 4 December 2mentioning

confidence: 99%

Three-dimensional numerical modeling of RTM and LRTM processes

Isoldi¹,

Oliveira²,

Rocha³

et al. 2012

J. Braz. Soc. Mech. Sci. & Eng.

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Section: Paper Received 25 February 2011 Paper Accepted 4 December 2mentioning

confidence: 99%

Three-dimensional numerical modeling of RTM and LRTM processes

Isoldi¹,

Oliveira²,

Rocha³

et al. 2012

J. Braz. Soc. Mech. Sci. & Eng.

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“…On the basis of the governing equation for a fully developed rectangular duct flow and the formulation of the equivalent edge permeability, by comparing with the Navier‐Stokes equation, the x‐ momentum equation in the edge channel is modified as [9, 11]: …”

Section: Construction Of Mathematical Modelsmentioning

confidence: 99%

“…Many studies on the numerical simulation of the mould‐filling stage have been implemented, and these studies mainly focus on the effect of processing conditions on the performance of the composites [1–11]; however, the resin curing reactions during the filling process are usually ignored.…”

Section: Introductionmentioning

confidence: 99%

Correlation analysis of epoxy/amine resin cure, structure and chemorheological behavior in RTM processes

et al. 2011

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At the reactive mould‐filling stage in resin transfer moulding (RTM) processes, the correlation analysis of epoxy/amine resin cure, structure and chemorheological behavior plays a key role in the optimum control of RTM processes. A new methodology used to simulate the reactive resin flow in RTM processes with edge effect is presented in this article. The recursive approach and the branching theory are used to describe the evolution of molecular structure and resin viscosity, respectively. And then the resin flow process is simulated by means of a semi‐implicit iterative calculation method and the finite volume method. The results reveal the proposed resin cure‐structure‐viscosity model provides excellent agreement with the experimental viscosity data during the RTM filling process. It is also observed that the curing reaction causes the inhomogeneous distribution of resin conversion and resin molecular weight in the mould cavity, which will result in the spatially structural and performance inhomogeneities in the finished products. With the injection temperature or the edge width increasing, the discrepancy of resin conversion and resin molecular weight in the mould cavity is more evident. This study is helpful for understanding the complicated relationship among the processing variables, resin structures, and properties. POLYM. COMPOS., 2011. © 2011 Society of Plastics Engineers

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“…However, for the purpose of the present work (investigation of the progress of the resin front line), a Newtonian approach is completely suitable. Indeed, this consideration is largely used in numerical investigations of the RTM process 3,7,26 , being generally acceptable due to the relatively low velocity of the fluid, the wide channels in which the fluid flows and the low range of shear variation during flow. Thus, assuming the resin as a Newtonian incompressible fluid, the mass conservation equation assumes the form…”

Section: Numerical Solutionmentioning

confidence: 99%

“…Results obtained with the developed code, which will hereafter be called CVFES (Control Volume Finite Element Solver), were compared with the solution obtained with the FLUENT software 23 . In this software, the VOF method 26,33 , combined with the porous media formulation, is used to track the advancement of the resin inside the mold cavity. Identical grids were used in both codes.…”

Section: Two-dimensional Mold Infiltration In An Isotropic Media (Casmentioning

confidence: 99%

A numerical investigation of the resin flow front tracking applied to the RTM process

et al. 2011

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Resin Transfer Molding (RTM) is largely used for the manufacturing of high-quality composite components and the key stage during processing is the resin infiltration. The complete understanding of this phenomenon is of utmost importance for efficient mold construction and the fast production of high quality components. This paper investigates the resin flow phenomenon within the mold. A computational application was developed to track the resin flow-front position, which uses a finite volume method to determine the pressure field and a FAN (Flow Analysis Network) technique to track the flow front. The mass conservation problem observed with traditional FE-CV (Finite Element-Control Volume) methods is also investigated and the use of a finite volume method to minimize this inconsistency is proposed. Three proposed case studies are used to validate the methodology by direct comparison with analytical and a commercial software solutions. The results show that the proposed methodology is highly efficient to determine the resin flow front, showing an improvement regarding mass conservation across volumes.

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Enhancements of the simulation method on the edge effect in resin transfer molding processes

Cited by 15 publications

References 21 publications

Three-dimensional numerical modeling of RTM and LRTM processes

Three-dimensional numerical modeling of RTM and LRTM processes

Correlation analysis of epoxy/amine resin cure, structure and chemorheological behavior in RTM processes

A numerical investigation of the resin flow front tracking applied to the RTM process

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