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Effects of Fiber Shape on Mechanical Properties of Fiber Assemblies

Materials, 2023-03, Vol.16 (7), p.2712 [Peer Reviewed Journal]

COPYRIGHT 2023 MDPI AG ;2023 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 (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;2023 by the authors. 2023 ;ISSN: 1996-1944 ;EISSN: 1996-1944 ;DOI: 10.3390/ma16072712 ;PMID: 37049006

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  • Title:
    Effects of Fiber Shape on Mechanical Properties of Fiber Assemblies
  • Author: Xu, Dandan ; Ma, Huibin ; Guo, Yu
  • Subjects: Assemblies ; compression ; Coordination numbers ; Curvature ; Deformation ; Diameters ; Discrete element method ; fiber shape ; Fibers ; flexible fibers ; Friction ; Mechanical properties ; Pressure dependence ; Shape effects ; shear ; Shear strength ; Shear stress ; Shear tests ; Simulation ; Tensile stress ; Tensile tests ; tension
  • Is Part Of: Materials, 2023-03, Vol.16 (7), p.2712
  • 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.
  • Publisher: Switzerland: MDPI AG
  • Language: English
  • Identifier: ISSN: 1996-1944
    EISSN: 1996-1944
    DOI: 10.3390/ma16072712
    PMID: 37049006
  • Source: ROAD
    GFMER Free Medical Journals
    PubMed Central
    Directory of Open Access Journals
    ProQuest Central
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