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Stochastic fiber fragmentation in UD-FRPs under longitudinal loading - A micromechanical analysis

Parambil, NK and Gururaja, S (2017) Stochastic fiber fragmentation in UD-FRPs under longitudinal loading - A micromechanical analysis. In: 14th International Conference on Fracture, ICF 2017, 18 - 20 June 2017, Rhodes, pp. 797-798.

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Official URL: https://doi.org/10.1002/adma.201101683


A numerical framework has been developed to investigate the micromechanical damage initiation and progression in uni-directional fiber reinforced polymer (UD-FRPs) under longitudinal loading. Three-dimensional repeating unit cell (3D-RUC) with spatially random distribution of continuous fibers dispersed in matrix have been generated. Each fiber is modelled by assigning varying strength along the length and allowing for multiple fragmentations to occur using Weibull statistics. Matrix damage and interface debonding is allowed to occur in addition to fiber failure. Non-linear homogenization principle is used to obtain effective constitutive behavior of the 3D-RUC. Multiple fragmentations in multiple fibers are seen to occur upon increasing longitudinal loads. Local load sharing around the broken fibers has also been observed. Fiber fragmentation is found to trigger other modes of damage.

Item Type: Conference Paper
Publication: ICF 2017 - 14th International Conference on Fracture
Publisher: International Conference on Fracture
Additional Information: The copyright for this article belongs to International Conference on Fracture
Keywords: Fiber reinforced plastics; Stochastic systems; Weibull distribution, Constitutive behaviors; Fiber reinforced polymers; Longitudinal loading; Micro-mechanical analysis; Micromechanical damage; Multiple fragmentations; Nonlinear homogenization; Random distribution, Fibers
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited: 18 Jul 2022 05:53
Last Modified: 18 Jul 2022 05:53
URI: https://eprints.iisc.ac.in/id/eprint/74636

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