NUMERICAL SIMULATION OF MECHANICAL BEHAVIOR OF WOVEN COMPOSITE AT DIFFERENT STRAIN RATE BY A COLLABORATIVE ELASTO-PLASTO-DAMAGE MODEL WITH FRACTIONAL DERIVATIVES

Alina Krasnobrizha, Patrick Rozycki, Laurent Gornet, Pascal Cosson
2016 Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016)   unpublished
This paper deals with a collaborative model to represent hysteresis behavior at different strain rates. The model consists of two sub-models. The first one treats the behavior during loading path. The elastic and in-elastic strains are computed as well as the in-ply damages. The strain-rate sensitivity is also taken into account. The second sub-model involves a fractional derivate approach to describe viscoelastic material response during unloading path. The hysteresis loops and strain rate
more » ... itivity are taken into account by fractional constitutive law. Fractional model involves a few parameters which are easily identified through an optimization procedure from the experimental data. The model is validated for thermoset and thermoplastic composite materials at different strain rates.
doi:10.7712/100016.2375.9643 fatcat:dtvnprcztje33fmdirveezuaz4