Publications

Fiber-dependent injection molding simulation of discontinuous reinforced polymers. PhD dissertation
Wittemann, F.
2022. KIT Scientific Publishing. doi:10.5445/KSP/1000148499

pyGCodeDecode: A Python package for time-accurate GCode simulation in material extrusion processes
Knirsch, J.; Frölich, F.; Hof, L.; Wittemann, F.; Kärger, L.
2024. Journal of Open Source Software, 9 (99), Art.-Nr.: 6465. doi:10.21105/joss.06465

Efficient Approximation of Varying Fiber Orientation States in Injection Molded Parts Under Consideration of Multiple Manufacturing Uncertainties
Wittemann, F.; Krauß, C.; Kärger, L.
2024. Applied Composite Materials. doi:10.1007/s10443-024-10268-3

Modeling Approach for Reactive Injection Molding of Polydisperse Suspensions with Recycled Thermoset Composites
Jetty, B.; Wittemann, F.; Kärger, L.
2024. Polymers, 16 (16), Art.-Nr.: 2245. doi:10.3390/polym16162245

Evaluation of mechanical properties characterization of additively manufactured components
Frölich, F.; Bechtloff, L.; Scheuring, B. M.; Heuer, A. L.; Wittemann, F.; Kärger, L.; Liebig, W. V.
2024. Progress in Additive Manufacturing. doi:10.1007/s40964-024-00700-2

Schnelle Methode zur Approximation von Druck- und Faserorientierungsverteilung infolge prozess- und materialbedingter Streuungen im Spritzguss
Wittemann, F.; Kärger, L.
2023. NAFEMS-Magazin, 68 (4), 22–28

Influence of fiber breakage on flow behavior in fiber length- and orientation-dependent injection molding simulations
Wittemann, F.; Kärger, L.; Henning, F.
2022. Journal of Non-Newtonian Fluid Mechanics, 310, 104950. doi:10.1016/j.jnnfm.2022.104950

Simplified modeling of electromagnets for dynamic simulation of transient effects for a synchronous electric motor
Bechler, F.; Kesten, J.; Wittemann, F.; Henning, F.; Doppelbauer, M.; Eberhard, P.
2021. International Journal of Mechanical System Dynamics, 1 (1), 89–95. doi:10.1002/msd2.12005

Theoretical approximation of hydrodynamic and fiber-fiber interaction forces for macroscopic simulations of polymer flow process with fiber orientation tensors
Wittemann, F.; Kärger, L.; Henning, F.
2021. Composites. Part C, Open access, 5, Art.-Nr. 100152. doi:10.1016/j.jcomc.2021.100152

Simulation of Reinforced Reactive Injection Molding with the Finite Volume Method
Wittemann, F.; Maertens, R.; Bernath, A.; Hohberg, M.; Kärger, L.; Henning, F.
2018. Journal of composites science, 2 (1), Aritcle no: 5. doi:10.3390/jcs2010005

Injection molding simulation of short fiber reinforced thermosets with anisotropic and non-Newtonian flow behavior
Wittemann, F.; Maertens, R.; Kärger, L.; Henning, F.
2019. Composites / A, 124, 105476. doi:10.1016/j.compositesa.2019.105476

Anisotropic Warpage Prediction of Injection Molded Parts with Phenolic Matrix
Wittemann, F.; Bernath, A.; Meyer, N.; Kärger, L.
2024. Proceedings of the 21st European Conference on Composite Materials (ECCM 2024). Ed.: C. Binetruy. Vol. 5, 139–145, European Society for Composite Materials (ESCM)

Investigation of the thermoviscoelastic behavior of a closed-cell polymer structural foam under pressure for processing in hybrid LCM processes
Dietrich, S.; Dohmen, C.; Frölich, F.; Jackstadt, A.; Wittemann, F.; Kärger, L.
2024. Proceedings of the 21st European Conference on Composite Materials. Vol 2 Material Science. Ed.: C. Binetruy, 548–554, European Society for Composite Materials (ESCM)

Numerical Study on Uncertainty Effects in Injection Molding
Wittemann, F.; Kärger, L.
2023. 23rd International Conference on Composite Materials : (ICCM 23) held in Belfast, Northern Ireland, from July 30th to August 4th 2023, Queen’s University Belfast

Structural health monitoring in additive manufactured structures by total electrical resistance measurements as
Liebig, W.; Muth, M.; Seitz, M.; Wittemann, F.; Weiss, P.
2022. ECCM20 - Proceedings of the 20th European Conference on Composite Materials - Composites Meet Sustainability (Vol 1-6), Ed.: A. Vassilopoulos, 1110–1117, École Polytechnique Fédérale de Lausanne (EPFL)

Fiber breakage modeling based on hydrodynamic forces in macroscopic process simulations
Wittemann, F.; Maertens, R.; Henning, F.; Kärger, L.
2022. Composites Meet Sustainability - Proceedings of the 20th European Conference on Composite Materials. Ed.: A. Vassilopoulos, École Polytechnique Fédérale de Lausanne (EPFL)

Design Approach for a Novel Multi Material Variable Flux Synchronous Reluctance Machine without Rare Earth Magnets
Kesten, J.; Frölich, F.; Wittemann, F.; Knirsch, J.; Bechler, F.; Kärger, L.; Eberhard, P.; Henning, F.; Doppelbauer, M.
2022. 2022 International Conference on Electrical Machines (ICEM), Valencia, Spain, 05-08 September 2022, 2304–2310, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/ICEM51905.2022.9910780

Using openfoam for simulation of reactive injection molding as a non-isothermal compressible multiphase flow
Wittemann, F.; Maertens, R.; Kaerger, L.; Henning, F.
2018. 14th International Conference on Flow Processing in Composite Materials, Luleå, S, May 30 - June 01, 2018

Evaluation of an Integral Injection Molded Housing for High Power Density Synchronous Machines with Concentrated Single-Tooth Winding
Langheck, A.; Reuter, S.; Saburow, O.; Maertens, R.; Wittemann, F.; Berg, L. F.; Doppelbauer, M.
2019. 2018 8th International Electric Drives Production Conference (EDPC), 4 and 5 December 2018, Schweinfurt, Germany: Proceedings, Art.-Nr.: 8658324, Institute of Electrical and Electronics Engineers (IEEE). doi:10.1109/EDPC.2018.8658324

Modeling of the Non-Isothermal Crystallization Kinetics of Polyamide 6 Composites During Thermoforming
Kugele, D.; Dörr, D.; Wittemann, F.; Hangs, B.; Rausch, J.; Kärger, L.; Henning, F.
2017. Proceedings of the 20th International ESAFORM Conference on Material Forming, ESAFORM 2017, Ireland, Dublin, 26th - 28th April 2017, Art.Nr. 030005, American Institute of Physics (AIP). doi:10.1063/1.5007992

Initial stack placement strategies for carbon fiber- reinforced sheet molding compound (C-SMC)
Olma, M.; Meyer, N.; Krauß, C.; Wittemann, F.; Kärger, L.
2024, July 5. 21st European Conference on Composite Materials (ECCM 2024), Nantes, France, July 2–5, 2024

Overmolding of 3D Skeleton Winding Structures: Process effects and challenges for process modeling
Dohmen, C.; Meyer, N.; Haas, J.; Beck, B.; Wittemann, F.; Kärger, L.
2024, July 5. 21st European Conference on Composite Materials (ECCM 2024), Nantes, France, July 2–5, 2024

Effects of varying fibre distribution in closed injection pultrusion modelling
Poppe, N.; Zeeb, G.; Wittemann, F.; Wilhelm, M.; Kärger, L.
2024, July 3. 21st European Conference on Composite Materials (ECCM 2024), Nantes, France, July 2–5, 2024

Direktgekühlter Elektromotor mit integralem Leichtbaugehäuse
Wittemann, F.; Kärger, L.; Henning, F.
2019, October 9. Fachtagung „Wärmeleitfähige Kunststoffe für das Thermomanagement“ (2019), Lüdenscheid, Germany, October 9, 2019

Simulation of Discontinuous Fiber Reinforced Composites along the CAE-Chain
Wittemann, F.; Hohberg, M.; Kärger, L.; Henning, F.
2018, March 7. MAHLE R&D Networking - High Performance Plastic (2018), Stuttgart, Germany, March 7–8, 2018

Vorstellung DEmiL – Direktgekühlter Elektromotor mit integralem Leichtbaugehäuse
Wittemann, F.; Kärger, L.; Henning, F.
2018, January 23. 20. Leichtbauforum des LBZ-BW e.V. (2018), Renningen, Germany, January 23, 2018

Strömungsmechanische Simulationen zur Herstellung von Faserverbundbauteilen
Henning, F.; Seuffert, J.; Wittemann, F.
2018, January 15. Strömungsmechanik und Strömungsmaschinen (2018), Karlsruhe, Germany, January 15, 2018

Injection Molding Simulation with Fiber Length Dependent Flow Modelling
Wittemann, F.; Kärger, L.; Henning, F.
2019, May 8. 12th International Conference on Composite Science and Technology (2019), Sorrento, Italy, May 8–10, 2019

Simulation of Insert Deformations for Thermoset Materials
Wittemann, F.; Kärger, L.; Henning, F.
2018, June 5. 9. CONNECT! European Moldflow® User Conference (2018), Frankfurt am Main, Germany, June 5–6, 2018

Homogenization of the Anisotropic Thermal Conductivity of Mesostructures in Material Extrusion
Hof, L.; Frölich, F.; Wittemann, F.; Kärger, L.
2024, July 2. 21st European Conference on Composite Materials (ECCM 2024), Nantes, France, July 2–5, 2024

of-rtm-6 – An OpenFOAM-6 extension with curing models and anisotropic permeability for usage in LCM simulations
Bernath, A.; Seuffert, J.; Dietrich, S.; Poppe, N.; Magagnato, D.; Wittemann, F.; Henning, F.; Kärger, L.
2024. doi:10.5281/zenodo.13327698