Thin-Walled Part Properties in PBF-LB/P — Experimental Understanding and Nonlocal Material Model

Jaksch A, Spinola M, Cholewa S, Pflug L, Stingl M, Drummer D (2022)

Publication Language: English

Publication Type: Conference contribution, Conference Contribution

Publication year: 2022

Event location: Austin, Texas US

DOI: 10.26153/tsw/44659

Abstract

Understanding the mechanics, geometry effects, and process behavior of thin-walled components is critical to fully realizing the potential of lightweight design in powder bed fusion of polymers (PBF-LB/P). In this work, parts built with rectangular cross sections of different sizes and orientations are described by their geometry, surface roughness, mechanical characteristics, and specific component geometry dependent on energy input. Experimental findings are supported by a nonlocal material model developed to adequately describe weakened material behavior at the surface of PBF-LB/P parts. This approach allows the simulation of the elastic modulus and density for complex part geometries while simultaneously considering boundary effects. Furthermore, the volume-surface ratio for thin-walled components were linearly correlated to the rectangular cross sections in different building orientations. This uniformity indicates that this ratio is a suitable quantity to consider. Therefore, the process knowledge is improved, especially in new design standards for thin-walled structures in PBF-LB/P.

Authors with CRIS profile

Andreas Jaksch Lehrstuhl für Kunststofftechnik Michele Spinola Sonderforschungsbereich 814/3 Additive Fertigung Simon Cholewa Sonderforschungsbereich 814/3 Additive Fertigung Lukas Pflug FAU Competence Center Scientific Computing (FAU CSC) Michael Stingl Lehrstuhl für Angewandte Mathematik (Kontinuierliche Optimierung) Dietmar Drummer Lehrstuhl für Kunststofftechnik

Related research project(s)

Process strategies for the production of thin-walled components during selective laser beam melting of plastics (SFB 814 (T3)) CRC 814 - Additive Manufacturing (SFB 814) Jan. 1, 2021 - Dec. 31, 2023 Process-adapted material characterization for laser beam melting (A3) (SFB 814 (A3)) CRC 814 - Additive Manufacturing (SFB 814) July 1, 2011 - June 30, 2023

How to cite

APA:

Jaksch, A., Spinola, M., Cholewa, S., Pflug, L., Stingl, M., & Drummer, D. (2022). Thin-Walled Part Properties in PBF-LB/P — Experimental Understanding and Nonlocal Material Model. In Proceedings of the SFF 2022. Austin, Texas, US.

MLA:

Jaksch, Andreas, et al. "Thin-Walled Part Properties in PBF-LB/P — Experimental Understanding and Nonlocal Material Model." Proceedings of the SFF 2022, Austin, Texas 2022.

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