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Process analysis of temperature and eigenstrains in stiffening ribs printed on a multi curved structure with a robot-based extrusion process

Winkelmann, Felix und Hein, Robert und Baid, Harsh und Cantarutti, Andrea (2023) Process analysis of temperature and eigenstrains in stiffening ribs printed on a multi curved structure with a robot-based extrusion process. Sim-Am 2023, 2023-07-25 - 2023-07-28, München, Deutschland.

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Kurzfassung

In this study, we investigate simulations for a pellet-based extrusion process with high-performance materials for 3D printing. The utilization of a robotic arm equipped with an extruder mounted on it has opened up new avenues for 3D printing, such as printing on curved surfaces or large overhangs without requiring additional support structures. In this research, our focus is on a doubly curved Carbon Fiber Reinforced Polymer (CFRP) structure, which has been strengthened by adding short fiber-reinforced ribs. These ribs are printed onto the curved surface of the structure to enhance its stiffness. However, during the high-temperature printing process with highperformance materials, significant temperature gradients occur, leading to eigenstrains and deformation of the ribs. To predict the impact of these effects on the stiffness of the structure, a process simulation is conducted by using the GENOA 3DP software suite from Alpha STAR Corp. The proposed AM process simulation takes into account AM parameters such as the toolpath (Gcode), deposition rate and extrusion temperature. The thermophysical process is modelled by an element-by-element activation based on the toolpath so that local temperature gradients are captured. This allows the consideration of manufacturing related effects for the prediction of process-dependent material and component properties. The primary objectives of this study are to simulate the intricate extrusion process and to estimate the eigenstrains and deformations that occur during the process as well as to gain an in- depth understanding of the process for further optimisation.

elib-URL des Eintrags:https://elib.dlr.de/197193/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Process analysis of temperature and eigenstrains in stiffening ribs printed on a multi curved structure with a robot-based extrusion process
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Winkelmann, FelixFelix.Winkelmann (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Hein, RobertRobert.Hein (at) dlr.dehttps://orcid.org/0000-0002-6258-3673NICHT SPEZIFIZIERT
Baid, HarshAlphastarNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Cantarutti, AndreaAlphastarNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:28 Juli 2023
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:3D Druck, Simulation, Prozesssimulation, Extrusionsprozess
Veranstaltungstitel:Sim-Am 2023
Veranstaltungsort:München, Deutschland
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:25 Juli 2023
Veranstaltungsende:28 Juli 2023
Veranstalter :Eccomas
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Umweltschonender Antrieb
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L CP - Umweltschonender Antrieb
DLR - Teilgebiet (Projekt, Vorhaben):L - Werkstoffe und Herstellverfahren, L - Digitale Technologien
Standort: Braunschweig
Institute & Einrichtungen:Institut für Systemleichtbau
Institut für Systemleichtbau > Strukturmechanik
Hinterlegt von: Winkelmann, Felix
Hinterlegt am:12 Sep 2023 09:08
Letzte Änderung:24 Apr 2024 20:57

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