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Mechanical Properties of Flexible TPU-Based 3D Printed Lattice Structures: Role of Lattice Cut Direction and Architecture

This study addresses the mechanical behavior of lattice materials based on flexible thermoplastic polyurethane (TPU) with honeycomb and gyroid architecture fabricated by 3D printing. Tensile, compression, and three-point bending tests were chosen as mechanical testing methods. The honeycomb architec...

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Autores principales: Beloshenko, Victor, Beygelzimer, Yan, Chishko, Vyacheslav, Savchenko, Bogdan, Sova, Nadiya, Verbylo, Dmytro, Voznyak, Andrei, Vozniak, Iurii
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8433625/
https://www.ncbi.nlm.nih.gov/pubmed/34503026
http://dx.doi.org/10.3390/polym13172986
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author Beloshenko, Victor
Beygelzimer, Yan
Chishko, Vyacheslav
Savchenko, Bogdan
Sova, Nadiya
Verbylo, Dmytro
Voznyak, Andrei
Vozniak, Iurii
author_facet Beloshenko, Victor
Beygelzimer, Yan
Chishko, Vyacheslav
Savchenko, Bogdan
Sova, Nadiya
Verbylo, Dmytro
Voznyak, Andrei
Vozniak, Iurii
author_sort Beloshenko, Victor
collection PubMed
description This study addresses the mechanical behavior of lattice materials based on flexible thermoplastic polyurethane (TPU) with honeycomb and gyroid architecture fabricated by 3D printing. Tensile, compression, and three-point bending tests were chosen as mechanical testing methods. The honeycomb architecture was found to provide higher values of rigidity (by 30%), strength (by 25%), plasticity (by 18%), and energy absorption (by 42%) of the flexible TPU lattice compared to the gyroid architecture. The strain recovery is better in the case of gyroid architecture (residual strain of 46% vs. 31%). TPUs with honeycomb architecture are characterized by anisotropy of mechanical properties in tensile and three-point bending tests. The obtained results are explained by the peculiarities of the lattice structure at meso- and macroscopic level and by the role of the pore space.
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spelling pubmed-84336252021-09-12 Mechanical Properties of Flexible TPU-Based 3D Printed Lattice Structures: Role of Lattice Cut Direction and Architecture Beloshenko, Victor Beygelzimer, Yan Chishko, Vyacheslav Savchenko, Bogdan Sova, Nadiya Verbylo, Dmytro Voznyak, Andrei Vozniak, Iurii Polymers (Basel) Article This study addresses the mechanical behavior of lattice materials based on flexible thermoplastic polyurethane (TPU) with honeycomb and gyroid architecture fabricated by 3D printing. Tensile, compression, and three-point bending tests were chosen as mechanical testing methods. The honeycomb architecture was found to provide higher values of rigidity (by 30%), strength (by 25%), plasticity (by 18%), and energy absorption (by 42%) of the flexible TPU lattice compared to the gyroid architecture. The strain recovery is better in the case of gyroid architecture (residual strain of 46% vs. 31%). TPUs with honeycomb architecture are characterized by anisotropy of mechanical properties in tensile and three-point bending tests. The obtained results are explained by the peculiarities of the lattice structure at meso- and macroscopic level and by the role of the pore space. MDPI 2021-09-03 /pmc/articles/PMC8433625/ /pubmed/34503026 http://dx.doi.org/10.3390/polym13172986 Text en © 2021 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
Beloshenko, Victor
Beygelzimer, Yan
Chishko, Vyacheslav
Savchenko, Bogdan
Sova, Nadiya
Verbylo, Dmytro
Voznyak, Andrei
Vozniak, Iurii
Mechanical Properties of Flexible TPU-Based 3D Printed Lattice Structures: Role of Lattice Cut Direction and Architecture
title Mechanical Properties of Flexible TPU-Based 3D Printed Lattice Structures: Role of Lattice Cut Direction and Architecture
title_full Mechanical Properties of Flexible TPU-Based 3D Printed Lattice Structures: Role of Lattice Cut Direction and Architecture
title_fullStr Mechanical Properties of Flexible TPU-Based 3D Printed Lattice Structures: Role of Lattice Cut Direction and Architecture
title_full_unstemmed Mechanical Properties of Flexible TPU-Based 3D Printed Lattice Structures: Role of Lattice Cut Direction and Architecture
title_short Mechanical Properties of Flexible TPU-Based 3D Printed Lattice Structures: Role of Lattice Cut Direction and Architecture
title_sort mechanical properties of flexible tpu-based 3d printed lattice structures: role of lattice cut direction and architecture
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8433625/
https://www.ncbi.nlm.nih.gov/pubmed/34503026
http://dx.doi.org/10.3390/polym13172986
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