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Numerical investigation of novel FRP composites towards high-strength, large-deformation, and tensile-behavior designable properties

Numerical investigation of novel FRP composites towards high-strength, large-deformation, and tensile-behavior designable properties
Numerical investigation of novel FRP composites towards high-strength, large-deformation, and tensile-behavior designable properties

A FRP composite consisting of FRP skins, 3D printed inner cores and twisted knots has been developed to achieve low-density, high-strength, large-deformation, and tensile-behavior designable properties. Desired nonlinear responses could be achieved by loading FRP skins to plastically deform inner cores with carefully designed configurations. However, current investigations provided few computational tools for determining the tensile behavior of the composite with various core configurations. In this study, a two-dimensional finite element (FE) model has been calibrated for the composite having various brace thicknesses, shell thicknesses, core spans, core heights, brace angles, and core numbers. Predictions were compared with experimental measurements in terms of entire stress-strain shapes, ultimate stresses and strains. Good correlation between predictions and corresponding measurements validate the reliability of the proposed FE model. By using the proposed FE model, a more sophisticated and efficient FRP composite could be developed upon increasingly updated demands.

3D printed inner cores, Finite element model, FRP skins, Nonlinear responses, Tensile-behavior designable
0263-8231
1-15
Sun, Wei
ab8e8179-f25d-4f51-95c3-8c009acf0c27
Liu, Haifeng
c66e8a63-59d7-4bec-bfeb-279cd3caba17
He, Tao
5a7e98e6-6045-49b6-bbad-551733952b50
Sun, Wei
ab8e8179-f25d-4f51-95c3-8c009acf0c27
Liu, Haifeng
c66e8a63-59d7-4bec-bfeb-279cd3caba17
He, Tao
5a7e98e6-6045-49b6-bbad-551733952b50

Sun, Wei, Liu, Haifeng and He, Tao (2019) Numerical investigation of novel FRP composites towards high-strength, large-deformation, and tensile-behavior designable properties. Thin-Walled Structures, 143, 1-15, [106217]. (doi:10.1016/j.tws.2019.106217).

Record type: Article

Abstract

A FRP composite consisting of FRP skins, 3D printed inner cores and twisted knots has been developed to achieve low-density, high-strength, large-deformation, and tensile-behavior designable properties. Desired nonlinear responses could be achieved by loading FRP skins to plastically deform inner cores with carefully designed configurations. However, current investigations provided few computational tools for determining the tensile behavior of the composite with various core configurations. In this study, a two-dimensional finite element (FE) model has been calibrated for the composite having various brace thicknesses, shell thicknesses, core spans, core heights, brace angles, and core numbers. Predictions were compared with experimental measurements in terms of entire stress-strain shapes, ultimate stresses and strains. Good correlation between predictions and corresponding measurements validate the reliability of the proposed FE model. By using the proposed FE model, a more sophisticated and efficient FRP composite could be developed upon increasingly updated demands.

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More information

Accepted/In Press date: 29 May 2019
e-pub ahead of print date: 3 June 2019
Published date: 1 October 2019
Keywords: 3D printed inner cores, Finite element model, FRP skins, Nonlinear responses, Tensile-behavior designable

Identifiers

Local EPrints ID: 433939
URI: http://eprints.soton.ac.uk/id/eprint/433939
ISSN: 0263-8231
PURE UUID: 7045fea4-5025-4fd8-ae90-7a702d60f3d5

Catalogue record

Date deposited: 06 Sep 2019 16:30
Last modified: 17 Mar 2024 12:28

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Contributors

Author: Wei Sun
Author: Haifeng Liu
Author: Tao He

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