Hysteretic shear behaviour of fibre-reinforced composite laminates

International audienceThis work deals with the hysteretic shear behaviour modelling of woven carbon fibre reinforcedcomposite laminates by means of fractional operators. The model includes both in-ply damageand irreversible strains. In-ply failure behaviour and damage is described by means of contin-uum damage mechanics and irreversible strain evolution equations are derived to finally obtainmaterial parameters from experimental data. Hysteretic behaviour observed under in-planeshear loading-unloading cycles are modelled with the use of a fractional derivative model. Themain advantage of fractional models is their ability to deal with history-dependent phenomena,such as hysteretic behaviour, with a very few number of parameters for the material behaviourmodel. The efficiency of this model has been analysed by comparison with experimental data,showing the model’s ability to reproduce the damage and hysteretic behaviour of the material