Simulative Prediction of Fiber-Matrix Separation in Rib Filling During Compression Molding Using a Direct Fiber Simulation
| Autor: | Olaf Täger, Tim A. Osswald, Christoph Kuhn, Ian Walter |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Composite number Compression molding long fiber reinforced thermoplastics (LFT) 02 engineering and technology Fiber-reinforced composite Bending lcsh:Technology fiber reinforced plastics process simulation compression molding fiber content direct fiber simulation mechanistic model Specific strength Viscosity 0203 mechanical engineering Fiber Composite material lcsh:Science Engineering (miscellaneous) Fiber simulation lcsh:T 021001 nanoscience & nanotechnology 020303 mechanical engineering & transports Ceramics and Composites lcsh:Q 0210 nano-technology |
| Zdroj: | Journal of Composites Science, Vol 2, Iss 1, p 2 (2017) Journal of Composites Science; Volume 2; Issue 1; Pages: 2 |
| Popis: | Compression molding of long fiber reinforced composites offers specific advantages in automotive applications due to the high strength to weight ratio, the comparably low tooling costs and short cycle times. However, the manufacturing process of long fiber composite parts presents a range of challenges. The phenomenon of fiber matrix separation (FMS) is causing severe deviations in fiber content, especially in complex ribbed structures. Currently, there is no commercial software that is capable to accurately predict FMS. This work uses a particle level mechanistic model to study FMS in a rib filling application. The direct fiber simulation (DFS) is uniquely suited to this application due to its ability to model individual fibers and their bending, as well as the interaction amongst fibers that leads to agglomeration. The effects of mold geometry, fiber length, viscosity, and initial fiber orientation are studied. It is shown that fiber length and initial fiber orientation have the most pronounced effects on fiber volume percentage in the ribs, with viscosity and part geometry playing a smaller role. |
| Databáze: | OpenAIRE |
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