Advanced Finite Element 3D Injection Molding

Silva, Luísa; Gruau, Cyril; Agassant, Jean‐François; Coupez, Thierry; Mauffrey, Jérome

doi:10.3139/217.1888

Cited by 18 publications

(9 citation statements)

References 8 publications

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“…This work has been implemented as a thermoset module of the Rem3D ® injection moulding software [8]. The curing kinetics is well taken into account and provides the overheating prediction inside the cavity.…”

Section: Discussionmentioning

confidence: 99%

3D Computation of reactive moulding processes

2008

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International audienceElectrical equipment for medium and high voltage is manufactured using reactive moulding process. During mould filling, air bubbles or weld-lines can appear which may be a huge problem for electrical insulation devices. Moreover, the use of thermoset materials induces delamination due to the resin's shrinkage. Product development delays can be reduced using numerical tools to simulate part forming process. In this paper, we present a three dimensional finite element analysis of the filling and curing stages of reactive moulding process. During the first stage, flow computation takes into account heat transfer and the curing reaction according to appropriate models. In the curing phase, the evolution of the degree of cure is coupled with an evolution model of the glass transition temperature. Taking in account his coupling phenomenon permits the computation of a more realistic curing kinetic and modelling of the slowdown at vitrification. The thermal field prediction is then more accurate. To validate this approach, experiments were performed. A comparison with computational results shows a good agreement in filling and temperature evolution inside the cavity

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Section: Discussionmentioning

confidence: 99%

3D Computation of reactive moulding processes

2008

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“…In order to capture such phenomena and to account for complex mold geometry as the one presented figure 3, 3D modeling is required. Viscous incompressible temperature dependent models have been first developed (Pichelin and Coupez, 1998 ;Hétu et al, 1998;Kim and Turng, 2004) and then generalized to account for compressibility (Haagh et al, 2001;Silva et al, 2005). Figure 22 shows successive steps of the filling of the cavity where the meshing has been shown in Figure 3.…”

Section: Injection Mouldingmentioning

confidence: 99%

A Personal Perspective on the Use of Modelling Simulation for Polymer Melt Processing

Agassant

Mackley

2015

International Polymer Processing

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Copyright 2015 Carl Hanser Verlag. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Carl Hanser Verlag. The authors are grateful to the publisher, Carl Hanser Verlag, for letting the manuscript being archived in this Open Access repository. The final publication is available at = http://dx.doi.org/10.3139/217.3020International audienceThis paper gives a personal view on the state of art in relation to the modelling of polymer melt processing. The paper briefly reviews both industrial, laboratory and modelling developments over the last forty years and highlights the key aspects now required for realistic modelling of polymer melt processing. The paper summarizes elements relating to the numerical simulation of specific and general polymer processes and also provides topical examples of the application of numerical modelling to certain commercial processes. The paper concludes with identifying areas of polymer processing that still remain a challenge in relation to accurate prediction

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“…This technique is based on the displacement of mesh nodes without changing the mesh topology: the mesh follows the motions of the fluid by contracting the mesh elements at the interface, regaining their original size once the interface has passed. The model has been implemented through the Rem3D Ò software (Silva, Gruau, Agassant, Coupez, & Mauffrey, 2005) which uses the techniques described above. The results of validation in the case of a single bubble (or N bubbles of the same size) can be found in Bikard et al (2005).…”

Section: Numerical Resolutionmentioning

confidence: 99%