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A 3D process simulation model for wet compression moulding

: Poppe, Christian T.; Krauß, Constantin; Albrecht, Fabian; Kärger, Luise

Fulltext urn:nbn:de:0011-n-6366166 (8.6 MByte PDF)
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Created on: 21.7.2021

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Composites. Part A, Applied science and manufacturing 145 (2021), Art. 106379, 17 pp.
ISSN: 1359-835X
Bundesministerium für Bildung und Forschung BMBF (Deutschland)
03INT614AC; HyWet
Journal Article, Electronic Publication
Fraunhofer ICT ()
Process simulation; Finite element analysis; LCM Liquid Composite Molding; Wet Compression Moulding (WCM); FE-Forming Simulation; Mould Filling; weak FSI

Wet Compression Moulding (WCM) provides large-scale production potential for continuously fibre-reinforced structural components due to simultaneous infiltration and draping during moulding. Due to thickness-dominated infiltration of the laminate, comparatively low cavity pressures are sufficient - a considerable economical advantage. Similar to other Liquid Compression Moulding (LCM) processes, forming and infiltration strongly interact during process. However, the degree of forming is much higher in WCM, which disqualifies a sequential modelling approach. This is demonstrated in this work via experimental characterisation of the interaction between compaction and permeability of a woven fabric and by trials with a transparent double dome geometry, which facilitates an in situ visualization of fluid progression during moulding. In this light, and in contrast to existing form filling approaches, a forming-inspired, three-dimensional process simulation approach is presented containing two fully-coupled macroscopic forming and fluid-submodels. The combined model is successfully benchmarked using experimental double dome trials with transparent tooling.