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On the Behavior of Honeycomb, Grid and Triangular PLA Structures under Symmetric and Asymmetric Bending

Additive manufacturing technologies enable the production of components with lightweight cores, by means of infills with various patterns and densities. Together with reduced mass and material consumption, infill geometries must ensure that strength and stiffness conditions are fulfilled. For the pr...

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Detalles Bibliográficos
Autores principales: Cojocaru, Vasile, Frunzaverde, Doina, Miclosina, Calin-Octavian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9865300/
https://www.ncbi.nlm.nih.gov/pubmed/36677181
http://dx.doi.org/10.3390/mi14010120
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author Cojocaru, Vasile
Frunzaverde, Doina
Miclosina, Calin-Octavian
author_facet Cojocaru, Vasile
Frunzaverde, Doina
Miclosina, Calin-Octavian
author_sort Cojocaru, Vasile
collection PubMed
description Additive manufacturing technologies enable the production of components with lightweight cores, by means of infills with various patterns and densities. Together with reduced mass and material consumption, infill geometries must ensure that strength and stiffness conditions are fulfilled. For the proper correlation of the infill type with the loading case of the part, the mechanical behavior of the infill along all three principal axes of inertia has to be known. In this paper, the behavior in symmetric and asymmetric bending of three infill geometries, commonly used in 3D printing processes (honeycomb, grid and triangles) is analyzed. The variations of deflections as a function of force orientation are presented, showing that honeycomb and triangular structures exhibit similar behaviors along the Y and Z principal axes of inertia. Furthermore, the displacements obtained for the three types of structures are compared, in relation to the consumed volume of material. The larger displacements of the grid structure compared to the honeycomb and triangular structures are highlighted.
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spelling pubmed-98653002023-01-22 On the Behavior of Honeycomb, Grid and Triangular PLA Structures under Symmetric and Asymmetric Bending Cojocaru, Vasile Frunzaverde, Doina Miclosina, Calin-Octavian Micromachines (Basel) Article Additive manufacturing technologies enable the production of components with lightweight cores, by means of infills with various patterns and densities. Together with reduced mass and material consumption, infill geometries must ensure that strength and stiffness conditions are fulfilled. For the proper correlation of the infill type with the loading case of the part, the mechanical behavior of the infill along all three principal axes of inertia has to be known. In this paper, the behavior in symmetric and asymmetric bending of three infill geometries, commonly used in 3D printing processes (honeycomb, grid and triangles) is analyzed. The variations of deflections as a function of force orientation are presented, showing that honeycomb and triangular structures exhibit similar behaviors along the Y and Z principal axes of inertia. Furthermore, the displacements obtained for the three types of structures are compared, in relation to the consumed volume of material. The larger displacements of the grid structure compared to the honeycomb and triangular structures are highlighted. MDPI 2022-12-31 /pmc/articles/PMC9865300/ /pubmed/36677181 http://dx.doi.org/10.3390/mi14010120 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Cojocaru, Vasile
Frunzaverde, Doina
Miclosina, Calin-Octavian
On the Behavior of Honeycomb, Grid and Triangular PLA Structures under Symmetric and Asymmetric Bending
title On the Behavior of Honeycomb, Grid and Triangular PLA Structures under Symmetric and Asymmetric Bending
title_full On the Behavior of Honeycomb, Grid and Triangular PLA Structures under Symmetric and Asymmetric Bending
title_fullStr On the Behavior of Honeycomb, Grid and Triangular PLA Structures under Symmetric and Asymmetric Bending
title_full_unstemmed On the Behavior of Honeycomb, Grid and Triangular PLA Structures under Symmetric and Asymmetric Bending
title_short On the Behavior of Honeycomb, Grid and Triangular PLA Structures under Symmetric and Asymmetric Bending
title_sort on the behavior of honeycomb, grid and triangular pla structures under symmetric and asymmetric bending
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9865300/
https://www.ncbi.nlm.nih.gov/pubmed/36677181
http://dx.doi.org/10.3390/mi14010120
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