Research
activities:
I am working on
the development of mathematical models
and numerical algorithms in order to predict rupture and post-failure
behavior in multi-phase materials, especially in short glass-fiber
reinforced thermoplastics. The investigated approach consists in
combining the mean-field homogenization theory and phenomenological
failure criteria/continuum damage models
(
Figure
1). The particularity of our
approach
is that failure modeling
is applied at the pseudo-grain level and not at the phases level. The
concept of a pseudo-grain comes from the two-step homogenization
procedure developed for multi-phase materials[
1].
Within this procedure, a representative volume element (RVE) is
decomposed into fictitious subregions (called pseudo-grains), each one
contains aligned and uniform fibers.
The homogenization is applied in two steps: first each pseudo-grain is
homogenized (e.g. using the incremental Mori-Tanaka model [
2]),
second the RVE, considered as an aggregate,
is homogenized (e.g. using Voigt model). The developed approach is
applicable for non-proportional loadings with a large range of strain
rates.
Upcomming scientific events:
-
JNB'23 : 03 - 05
octobre 2023, Hammamet (Tunisia)
