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Linear-nonlinear stiffness responses of carbon fiber-reinforced polymer composite materials and structures: a numerical study


R. Koloor, S. S. and Karimzadeharani, A. and Abdullah, M. R. and Petrů, M. and Yidris, N. and Sapuan, S. M. and Tamin, M. N. (2021) Linear-nonlinear stiffness responses of carbon fiber-reinforced polymer composite materials and structures: a numerical study. Polymers, 13 (3). art. no. 344. pp. 1-22. ISSN 2073-4360


The stiffness response or load-deformation/displacement behavior is the most important mechanical behavior that frequently being utilized for validation of the mathematical-physical models representing the mechanical behavior of solid objects in numerical method, compared to actual experimental data. This numerical study aims to investigate the linear-nonlinear stiffness behavior of carbon fiber-reinforced polymer (CFRP) composites at material and structural levels, and its dependency to the sets of individual/group elastic and damage model parameters. In this regard, a validated constitutive damage model, elastic-damage properties as reference data, and simulation process, that account for elastic, yielding, and damage evolution, are considered in the finite element model development process. The linear-nonlinear stiffness responses of four cases are examined, including a unidirectional CFRP composite laminate (material level) under tensile load, and also three multidirectional composite structures under flexural loads. The result indicated a direct dependency of the stiffness response at the material level to the elastic properties. However, the stiffness behavior of the composite structures depends both on the structural configuration, geometry, lay-ups as well as the mechanical properties of the CFRP composite. The value of maximum reaction force and displacement of the composite structures, as well as the nonlinear response of the structures are highly dependent not only to the mechanical properties, but also to the geometry and the configuration of the structures.

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Official URL or Download Paper: https://www.mdpi.com/2073-4360/13/3/344

Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
DOI Number: https://doi.org/10.3390/polym13030344
Publisher: MDPI AG
Keywords: CFRP composites; Material behavior; Structural analysis; Stiffness response; Damage mechanics; Finite element method
Depositing User: Ms. Che Wa Zakaria
Date Deposited: 06 Apr 2023 01:40
Last Modified: 06 Apr 2023 01:40
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.3390/polym13030344
URI: http://psasir.upm.edu.my/id/eprint/94037
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