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Effects of Fiber Shape on Mechanical Properties of Fiber Assemblies

The effects of fiber shape on the mechanical responses of fiber assemblies under compression, tension, and shear deformations are numerically investigated using the discrete element method (DEM). Simulations of the compression of ring-shaped fibers are consistent with experimental results, verifying...

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Detalles Bibliográficos
Autores principales: Xu, Dandan, Ma, Huibin, Guo, Yu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10096075/
https://www.ncbi.nlm.nih.gov/pubmed/37049006
http://dx.doi.org/10.3390/ma16072712
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author Xu, Dandan
Ma, Huibin
Guo, Yu
author_facet Xu, Dandan
Ma, Huibin
Guo, Yu
author_sort Xu, Dandan
collection PubMed
description The effects of fiber shape on the mechanical responses of fiber assemblies under compression, tension, and shear deformations are numerically investigated using the discrete element method (DEM). Simulations of the compression of ring-shaped fibers are consistent with experimental results, verifying the discrete element method code. In the compressive tests of S-shaped fibers, pressure exhibits a nonmonotonic dependence on fiber curvature; while in the tensile tests, yield tensile stress generally decreases with increasing fiber curvature. In the shear tests, yield shear stress decreases with increasing fiber curvature for the S-shaped fibers, and the smallest yield shear stresses and the smallest coordination numbers are obtained for U-shaped and Z-shaped fibers. It is interesting to observe that for the assemblies of various fiber shapes, yield shear stress increases with increasing maximum Feret diameter of the fibers, which characterizes the largest dimension of a fiber between two parallel tangential lines. These novel observations of the effects of fiber shape provide some guidelines for material designs with the fibers.
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spelling pubmed-100960752023-04-13 Effects of Fiber Shape on Mechanical Properties of Fiber Assemblies Xu, Dandan Ma, Huibin Guo, Yu Materials (Basel) Article The effects of fiber shape on the mechanical responses of fiber assemblies under compression, tension, and shear deformations are numerically investigated using the discrete element method (DEM). Simulations of the compression of ring-shaped fibers are consistent with experimental results, verifying the discrete element method code. In the compressive tests of S-shaped fibers, pressure exhibits a nonmonotonic dependence on fiber curvature; while in the tensile tests, yield tensile stress generally decreases with increasing fiber curvature. In the shear tests, yield shear stress decreases with increasing fiber curvature for the S-shaped fibers, and the smallest yield shear stresses and the smallest coordination numbers are obtained for U-shaped and Z-shaped fibers. It is interesting to observe that for the assemblies of various fiber shapes, yield shear stress increases with increasing maximum Feret diameter of the fibers, which characterizes the largest dimension of a fiber between two parallel tangential lines. These novel observations of the effects of fiber shape provide some guidelines for material designs with the fibers. MDPI 2023-03-29 /pmc/articles/PMC10096075/ /pubmed/37049006 http://dx.doi.org/10.3390/ma16072712 Text en © 2023 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
Xu, Dandan
Ma, Huibin
Guo, Yu
Effects of Fiber Shape on Mechanical Properties of Fiber Assemblies
title Effects of Fiber Shape on Mechanical Properties of Fiber Assemblies
title_full Effects of Fiber Shape on Mechanical Properties of Fiber Assemblies
title_fullStr Effects of Fiber Shape on Mechanical Properties of Fiber Assemblies
title_full_unstemmed Effects of Fiber Shape on Mechanical Properties of Fiber Assemblies
title_short Effects of Fiber Shape on Mechanical Properties of Fiber Assemblies
title_sort effects of fiber shape on mechanical properties of fiber assemblies
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10096075/
https://www.ncbi.nlm.nih.gov/pubmed/37049006
http://dx.doi.org/10.3390/ma16072712
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