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Study on the Geometric Design of Supports for Overhanging Structures Fabricated by Selective Laser Melting

Additional structures are usually adopted to support the overhanging structures in order to resist the deformation of parts. Improper geometric design of the support structures may result in a sharp deterioration in the surface quality and a failure of manufacture, which affects the expansion in the...

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Autores principales: Zhang, Kaifei, Fu, Guang, Zhang, Peng, Ma, Zhibo, Mao, Zhongfa, Zhang, David Z.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6337201/
https://www.ncbi.nlm.nih.gov/pubmed/30577654
http://dx.doi.org/10.3390/ma12010027
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author Zhang, Kaifei
Fu, Guang
Zhang, Peng
Ma, Zhibo
Mao, Zhongfa
Zhang, David Z.
author_facet Zhang, Kaifei
Fu, Guang
Zhang, Peng
Ma, Zhibo
Mao, Zhongfa
Zhang, David Z.
author_sort Zhang, Kaifei
collection PubMed
description Additional structures are usually adopted to support the overhanging structures in order to resist the deformation of parts. Improper geometric design of the support structures may result in a sharp deterioration in the surface quality and a failure of manufacture, which affects the expansion in the use of selective laser melting (SLM) technology. In this research, cuboids were added into the conventional block support for a better heat dissipation. The Taguchi method was used to analyze the effect of the geometric design of this support on the part’s deformation and surface roughness. It was found that solid pieces or cuboids as support structures can reduce the deformation. However, their effects are weaker than those of teeth structures which decrease the deformation by more reliable connections. It is interesting that narrowing the gap between the cuboids and overhang can weaken the strength of teeth structures and then increases the deformation of part. In general, the distance between every two adjacent walls of support and the gap between the cuboids and the overhang have the greatest influence on the part’s deformation and surface quality respectively.
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spelling pubmed-63372012019-01-22 Study on the Geometric Design of Supports for Overhanging Structures Fabricated by Selective Laser Melting Zhang, Kaifei Fu, Guang Zhang, Peng Ma, Zhibo Mao, Zhongfa Zhang, David Z. Materials (Basel) Article Additional structures are usually adopted to support the overhanging structures in order to resist the deformation of parts. Improper geometric design of the support structures may result in a sharp deterioration in the surface quality and a failure of manufacture, which affects the expansion in the use of selective laser melting (SLM) technology. In this research, cuboids were added into the conventional block support for a better heat dissipation. The Taguchi method was used to analyze the effect of the geometric design of this support on the part’s deformation and surface roughness. It was found that solid pieces or cuboids as support structures can reduce the deformation. However, their effects are weaker than those of teeth structures which decrease the deformation by more reliable connections. It is interesting that narrowing the gap between the cuboids and overhang can weaken the strength of teeth structures and then increases the deformation of part. In general, the distance between every two adjacent walls of support and the gap between the cuboids and the overhang have the greatest influence on the part’s deformation and surface quality respectively. MDPI 2018-12-21 /pmc/articles/PMC6337201/ /pubmed/30577654 http://dx.doi.org/10.3390/ma12010027 Text en © 2018 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Kaifei
Fu, Guang
Zhang, Peng
Ma, Zhibo
Mao, Zhongfa
Zhang, David Z.
Study on the Geometric Design of Supports for Overhanging Structures Fabricated by Selective Laser Melting
title Study on the Geometric Design of Supports for Overhanging Structures Fabricated by Selective Laser Melting
title_full Study on the Geometric Design of Supports for Overhanging Structures Fabricated by Selective Laser Melting
title_fullStr Study on the Geometric Design of Supports for Overhanging Structures Fabricated by Selective Laser Melting
title_full_unstemmed Study on the Geometric Design of Supports for Overhanging Structures Fabricated by Selective Laser Melting
title_short Study on the Geometric Design of Supports for Overhanging Structures Fabricated by Selective Laser Melting
title_sort study on the geometric design of supports for overhanging structures fabricated by selective laser melting
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6337201/
https://www.ncbi.nlm.nih.gov/pubmed/30577654
http://dx.doi.org/10.3390/ma12010027
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