Topology Optimization in Additive Manufacturing Considering the Grain Structure of Inconel 718 using Numerical Homogenization

Hübner D, Gotterbarm M, Kergaßner A, Köpf J, Pobel C, Markl M, Mergheim J, Steinmann P, Körner C, Stingl M (2018)

Publication Language: English

Publication Status: In review

Publication Type: Conference contribution

Future Publication Type: Conference contribution

Publication year: 2018

Pages Range: 102-111

Conference Proceedings Title: Proceedings of 7th International Conference on Additive Technologies

Event location: Maribor SI

Abstract

This paper introduces a new manufacturing aware design approach which exploits the possibilities of additive manufacturing processes to generate arbitrary geometries and simultaneously adjust the grain structure of the materials by choosing particular scan strategies. A combined experimental-simulative approach is developed which experimentally analyses the producible grain structures in the selective electron beam process, computes macroscopic material properties for these grain structures and employs these material properties in an optimization procedure in which the topology of a part and the orientation of the grains are optimized. In one example, the stiffness of a designed part can be increased by 30% when the grain orientation is taken into account.

Authors with CRIS profile

Daniel Hübner Sonderforschungsbereich 814/3 Additive Fertigung Martin Gotterbarm Zentralinstitut für Neue Materialien und Prozesstechnik Andreas Kergaßner Lehrstuhl für Technische Mechanik (LTM) Johannes Köpf Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle) (WTM) Christoph Pobel Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle) (WTM) Matthias Markl Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle) (WTM) Julia Mergheim Lehrstuhl für Technische Mechanik (LTM) Paul Steinmann Lehrstuhl für Technische Mechanik (LTM) Carolin Körner Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle) (WTM) Michael Stingl Lehrstuhl für Angewandte Mathematik (Kontinuierliche Optimierung)

Additional Organisation(s)

Sonderforschungsbereich 814/3 Additive Fertigung

Related research project(s)

Robust Structure-Process-Optimization (C2) (SFB 814 (C2)) CRC 814 - Additive Manufacturing (SFB 814) July 1, 2011 - June 30, 2023 Activity SEBM 3D Simulation Jan. 1, 2000 - Jan. 1, 2003 Activity Development of process strategies Jan. 1, 2000 - Jan. 1, 2003

How to cite

APA:

Hübner, D., Gotterbarm, M., Kergaßner, A., Köpf, J., Pobel, C., Markl, M.,... Stingl, M. (2018). Topology Optimization in Additive Manufacturing Considering the Grain Structure of Inconel 718 using Numerical Homogenization. In Proceedings of 7th International Conference on Additive Technologies (pp. 102-111). Maribor, SI.

MLA:

Hübner, Daniel, et al. "Topology Optimization in Additive Manufacturing Considering the Grain Structure of Inconel 718 using Numerical Homogenization." Proceedings of the iCAT 2018, Maribor 2018. 102-111.

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