About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
Thin-walled Part Properties in PBF-LB/P — Experimental Understanding and Nonlocal Material Model |
Author(s) |
Andreas Jaksch, Michele Spinola, Simon Cholewa, Lukas Pflug, Michael Stingl, Dietmar Drummer |
On-Site Speaker (Planned) |
Andreas Jaksch |
Abstract Scope |
Understanding the mechanics, geometry effects, and process behavior of thin-walled components is critical to fully utilize the potential of lightweight design of 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 on specific component geometry depending 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 considering boundary effects. Furthermore, the volume-surface ratio for thin-walled components follows a linear behavior 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. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |