Mesoscale modelling of tensile response and damage evolution in natural fibre reinforced laminates
Article dans une revue avec comité de lecture
Author
Date
2017Journal
Composites Part B: EngineeringAbstract
A continuum damage mechanics based mesoscale model is developed within a thermodynamics framework to describe the in-plane tensile response in natural fibre composites. The standard Mesoscale Damage Theory (MDT) is modified to incorporate damage and inelasticity evolution in the fibre-direction, thereby capturing the unique nonlinear fibre-direction response evidenced in natural fibre composites (NFC). The multi-ply damage model is validated using tests on Flax/epoxy laminates and available data on Carbon/epoxy laminates. Model parameters are identified for Flax/epoxy by applying an optimisation algorithm that compares numerical predictions with experimental data. Predictions of mechanical response, stiffness degradation, and inelasticity correlate very well with experimental observations of Flax-laminates. This modified-MDT model offers a predictive, robust tool to aid the development of NFC engineering structures.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Article dans une revue avec comité de lectureNICOLINCO, Constantin; MAHBOOB, Zia; CHEMISKY, Yves; OGUAMANAM, Donatus; BOUGHERARA, Habiba;
MERAGHNI, Fodil (Elsevier BV, 2021-01)
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 ... -
Conférence invitéeBOUGHERARA, Habiba; EL SAWI, Ihab; FAWAZ, Zouheir;
MERAGHNI, Fodil (Ibrahim Karaman, Raymundo Arróyave and Eyad Masad, 2015)
The main objective of this preliminary investigation is to identify and characterize the damage evolution of angle ply ([±45] 16 ) flax-reinforced epoxy composites using an energy-based damage model combined with Scanning ... -
Conférence invitéeIn this work, the influence of the direction and the history of thermomechanical loading of NiTi shape memory alloys on the overall material behavior is experimentally investigated. In the first part, cyclic biaxial ...
-
Conférence invitéeIn this work, a new 3D thermomechanically coupled phenomenological model is proposed for SMAs. SMA behavior is described through several strain mechanisms, each associated with its proper internal variables. Forward and ...
-
Article dans une revue avec comité de lectureACHOUR, Nadia; CHATZIGEORGIOU, George; CHEMISKY, Yves;
FITOUSSI, Joseph;
MERAGHNI, Fodil (Elsevier, 2015)
In this work, the phenomenological viscoplastic DSGZ model (Duan et al., 2001 [13]), developed for glassy or semi-crystalline polymers, is numerically implemented in a three-dimensional framework, following an implicit ...