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| Naji, M. |
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| Ertürk, Emre |
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| Azevedo, Nuno Monteiro |
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Hirsch, Franz Wolfgang
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Publications (8/8 displayed)
- 2023Experimental and numerical characterization of imperfect additively manufactured lattices based on triply periodic minimal surfacescitations
- 2023Shape optimization of additively manufactured lattices based on triply periodic minimal surfacescitations
- 2022Additively manufactured AlSi10Mg lattices – Potential and limits of modelling as-designed structurescitations
- 2021Modeling and simulation of interface failure in metal-composite hybridscitations
- 2020Hybrid fibre reinforced thermoplastic hollow structures with a multi-scale structured metal load introduction element
- 2018Design and intrinsic processing of a hybrid CFR-TP contour joint with a multi-scale structured load introduction element
- 2018Coupled process and structure analysis of metal-FRP-hybrid structures
- 2017On the Design, Characterization and Simulation of Hybrid Metal-Composite Interfaces
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article
Additively manufactured AlSi10Mg lattices – Potential and limits of modelling as-designed structures
Abstract
Additive manufacturing overcomes the restrictions of classical manufacturing methods and enables the production of near-net-shaped, complex geometries. In that context, lattice structures are of high interest due to their superior weight reduction potential. AlSi10Mg is a well-known alloy for additive manufacturing and well suited for such applications due to its high strength to material density ratio. It has been selected in this study for producing bulk material and complex geometries of a strut-based lattice type (rhombic dodecahedron). A detailed characterisation of as-built and heat-treated specimens has been conducted including microstructural analyses, identification of imperfections and rigorous mechanical testing under different load conditions. An isotropic elastic–plastic material model is deduced on the basis of tension test results of bulk material test specimens. Performed experiments under compression, shear, torsion and tension load are compared to their virtual equivalents. With the help of numerical modelling, the overall structural behaviour was simulated using the detailed lattice geometry and was successfully predicted by the presented numerical models. The discussion of the limits of this approach aims to evaluate the potential of the numerical assessment in the modelling of the properties for novel lightweight structures. ; publishedVersion