Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 140, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2020.106153
Keywords
Natural fiber composites; Damage mechanics; Compressive mechanical testing; Mesoscale modelling
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Compressive mechanical testing was performed on continuous fiber Flax/Epoxy laminate specimens to capture and quantify its evolving in-plane plasticity and moduli, and a modified continuum damage mechanics-based model successfully predicted the NFCs nonlinear compressive mechanical response.
Compressive mechanical testing was performed on continuous fiber Flax/Epoxy laminate specimens, capturing, and quantifying its evolving in-plane plasticity and moduli. This non-linear behaviour was simulated using a modified continuum damage mechanics-based model. The standard Mesoscale Damage Theory (MDT) of Ladeveze and Le Dantec was modified to include fiber-direction damage and plasticity evolution constitutive equations in order to capture the non-linear behavior observed in Natural Fiber Composites (NFCs). The model parameters were experimentally identified and optimized. Validations have been performed on Flax/Epoxy laminates of various fiber orientations, as well as on E-Glass/Polyester using data from available literature. The proposed model successfully predicts the NFCs nonlinear compressive mechanical response. It is a robust predictive tool to aid engineers and designers in the development of load-bearing biomaterial-reinforced composites.
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