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Rosnitschek, Tobias ; Gläseke, Annika ; Hüter, Florian ; Alber-Laukant, Bettina ; Tremmel, Stephan:
Optimization of Fused Filament Fabricated Infill Patterns for Sandwich Structures in a Three-Point Bending Test.
In: Rieser, Jasper ; Endress, Felix ; Horoschenkoff, Alexander ; Höfer, Philipp ; Dickhut, Tobias ; Zimmermann, Markus
(Hrsg.):
Proceedings of the Munich Symposium on Lightweight Design 2021 : Tagungsband zum Münchner Leichtbauseminar 2021. -
Berlin
: Springer Vieweg
,
2022
. - S. 115-123
ISBN 978-3-662-65215-2
DOI: https://doi.org/10.1007/978-3-662-65216-9_11
Abstract
Additive manufacturing is taking on an essential role in lightweight design engineering. To realize significant weight reductions and manufacturing time savings, additively manufactured components often consist of a shell and an inner infill structure. By now, infill structures are mainly simple geometrical patterns without any link to the load cases of the components.
In this article, we investigate the possibility of using topology optimization for more dedicated infill structures. Therefore, we present a workflow to create the topology-optimized shape of a unit cell, patterned and extruded as an infill structure. The workflow is used to optimize various three-point bending specimens, which are manufactured by fused filament fabrication. The specimens are compared in experiments and finite element simulations utilizing a lightweight number. Though open challenges exist in further automation and consideration of other load cases, shape orientation and additive manufacturing processes, this contribution represents a basic approach to employing topology optimization to optimize infill structures.