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Experimental and numerical simulation of material and damage behaviour of 3d printed polyamide 12 under quasi-static-loading

  • In order to characterise the material and damage behaviour of additively manufactured polyamide 12 (PA12) under quasi-static load and to implement it in a numerical model, experiments under quasi-static load as well as microstructural investigations were carried out. Selective laser sintering (SLS) was used as the manufacturing process. For the classification of the material behaviour, quasi-static cyclic tests with holding times as well as tensile tests were performed. X-ray refraction and computed tomography (CT) were used to investigate the damage behaviour. The Chaboche model, which has already been applied for metallic materials under thermomechanical loading, served as the basis for the selection of the numerical material model. The same procedure was used for the selection of the damage model, where the Gurson–Tvergaard–Needleman (GTN) model was chosen, which was already used for porous metallic materials. The Chaboche model shows very good agreement with experimental results. Furthermore, the coupling with the GTN model allowsIn order to characterise the material and damage behaviour of additively manufactured polyamide 12 (PA12) under quasi-static load and to implement it in a numerical model, experiments under quasi-static load as well as microstructural investigations were carried out. Selective laser sintering (SLS) was used as the manufacturing process. For the classification of the material behaviour, quasi-static cyclic tests with holding times as well as tensile tests were performed. X-ray refraction and computed tomography (CT) were used to investigate the damage behaviour. The Chaboche model, which has already been applied for metallic materials under thermomechanical loading, served as the basis for the selection of the numerical material model. The same procedure was used for the selection of the damage model, where the Gurson–Tvergaard–Needleman (GTN) model was chosen, which was already used for porous metallic materials. The Chaboche model shows very good agreement with experimental results. Furthermore, the coupling with the GTN model allows a very good modelling of the damage behaviour. Finally, it could be shown that the selected models are suitable to simulate the material and damage behaviour of 3D printed PA12.show moreshow less

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Author: Daniela SchobORCiD, Robert RoszakORCiD, Ilja SagradovORCiD, Holger SparrORCiD, Andreas KupschORCiD, Fabien LeonardORCiD, Bernd R. MüllerORCiD, Giovanni BrunoORCiD
URL:https://am.ippt.pan.pl/am/article/viewFile/v71p507/pdf
DOI:https://doi.org/10.24423/aom.3162
ISSN:0373-2029
Title of the source (English):Archives of Mechanics
Document Type:Scientific journal article peer-reviewed
Language:English
Year of publication:2019
Contributing Corporation:Bundesanstalt für Materialforschung und -prüfung
Tag:3D printing; Chaboche model; Computed tomography; Damage; GTN model; Polyamide 12; Viscoplastic; X-ray refraction
Volume/Year:71
Issue number:4-5
First Page:507
Last Page:526
Faculty/Chair:Fakultät 3 Maschinenbau, Elektro- und Energiesysteme / FG Technische Mechanik und Maschinendynamik
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