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Open AccessReview

Review of the Numerical Modeling of Compression Molding of Sheet Molding Compound

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Division of Fluid Mechanics, Luleå University of Technology, SE 97187 Luleå, Sweden
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Gestamp Hardtech, Ektjärnsvägen 5, SE 97125 Luleå, Sweden
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Mechanical Engineering, University of Hull, Kingston upon Hull HU6 7RX, UK
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Author to whom correspondence should be addressed.
Processes 2020, 8(2), 179; https://doi.org/10.3390/pr8020179
Received: 4 December 2019 / Revised: 29 January 2020 / Accepted: 30 January 2020 / Published: 5 February 2020
(This article belongs to the Section Materials Processes)
A review of the numerical modeling of the compression molding of the sheet molding compound (SMC) is presented. The focus of this review is the practical difficulties of modeling cases with high fiber content, an area in which there is relatively little documented work. In these cases, the prediction of the flows become intricate due to several reasons, mainly the complex rheology of the compound and large temperature gradients, but also the orientation of fibers and the micromechanics of the interactions between the fluid and the fibers play major roles. The details of this during moldings are discussed. Special attention is given to the impact on viscosity from the high fiber volume fraction, and the various models for this. One additional area of interest is the modeling of the fiber orientation.
Keywords: sheet molding compound; compression molding; numerical modeling sheet molding compound; compression molding; numerical modeling
MDPI and ACS Style

Alnersson, G.; Tahir, M.W.; Ljung, A.-L.; Lundström, T.S. Review of the Numerical Modeling of Compression Molding of Sheet Molding Compound. Processes 2020, 8, 179.

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