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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Wittemann, Florian
Karlsruhe Institute of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2024Anisotropic warpage prediction of injection molded parts with phenolic matrix
- 2024Initial stack placement strategies for carbon fiber- reinforced sheet molding compound (C-SMC)
- 2024Modeling Approach for Reactive Injection Molding of Polydisperse Suspensions with Recycled Thermoset Compositescitations
- 2023Numerical Study on Uncertainty Effects in Injection Molding
- 2023Fiber breakage modeling based on hydrodynamic forces in macroscopic process simulations
- 2022Fiber breakage modeling based on hydrodynamic forces in macroscopic process simulations
- 2022Fiber-dependent injection molding simulation of discontinuous reinforced polymers
- 2022Fiber-dependent injection molding simulation of discontinuous reinforced polymers
- 2022Influence of fiber breakage on flow behavior in fiber length- and orientation-dependent injection molding simulationscitations
- 2021Theoretical approximation of hydrodynamic and fiber-fiber interaction forces for macroscopic simulations of polymer flow process with fiber orientation tensorscitations
- 2019Simulation of Reinforced Reactive Injection Molding with the Finite Volume Method
- 2019Using openfoam for simulation of reactive injection molding as a non-isothermal compressible multiphase flow
- 2019Simulation of Discontinuous Fiber Reinforced Composites along the CAE-Chain
- 2019Injection Molding Simulation with Fiber Length Dependent Flow Modelling
- 2018Simulation of Reinforced Reactive Injection Molding with the Finite Volume Methodcitations
- 2018Evaluation of an Integral Injection Molded Housing for High Power Density Synchronous Machines with Concentrated Single-Tooth Windingcitations
- 2018Using openfoam for simulation of reactive injection molding as a non-isothermal compressible multiphase flow
- 2018Simulation of Discontinuous Fiber Reinforced Composites along the CAE-Chain
- 2018Simulation of reinforced reactive injection molding with the finite volume methodcitations
- 2017Modeling of the non-isothermal crystallization kinetics of polyamide 6 composites during thermoformingcitations
Places of action
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article
Influence of fiber breakage on flow behavior in fiber length- and orientation-dependent injection molding simulations
Abstract
Injection molding is one of the most important processes for manufacturing discontinuous fiber reinforcedpolymers (FRPs). The matrix of FRPs shows a transient chemo-thermomechanical behavior and the fibers createanisotropy influencing physical properties. Hence, FRPs are complex materials, but also likely used in volumeproduction. In this work, the fiber-induced anisotropic behavior during mold filling is modelled with ananisotropic fourth order viscosity tensor. The viscosity tensor takes second and fourth order fiber orientationtensor, fiber length and non-Newtonian matrix viscosity into account. In this way, the macroscopic simulationcaptures the influence of the flow field on the fiber re-orientation and vice versa. The fiber orientation tensor isused to determine reference fibers in every element for calculation of hydrodynamic forces. This information isused in a novel fiber breakage model, based on buckling of fibers in Jeffery’s orbit. The result is a macroscopicmolding simulation with not only transient fiber orientation distribution, but also fiber length distribution. Dueto the anisotropic viscosity tensor, the predicted fiber breakage influences the material’s viscosity and flowbehavior, which is also visible in the simulated cavity pressure. The results are validated with injection moldingexperiments, performed with a glass fiber reinforced phenolic compound, showing good agreement.