Rémi Cornaggia

I am now (from 2020) Maître de conférences (assistant professor) at Sorbonne Université, teaching in the UFR d'ingénierie (engineering department) and conducting my research in team MISES of Institut Jean le Rond d'Alemebert. I am interested in the modelling and simulation of acoustic and elastic waves, and to the homogenization and optimization of architected materials and composites.

I have been working mainly on inverse scattering problems, vibrations of heterogeneous beams, and homogenisation and optimisation of periodic materials to enhance dispersive effects. My favourite mathematical tools are topological derivatives of various cost functionnals or quantities of interest, volumic integral equations to reformulate scattering problems, and the two-scale homogenisation method to address periodic media. For numerics, I mainly use finite elements, boundary elements, and FFT-based methods for numerical homogenisation.

Below is a short CV to provide some context to the list of publications :

I obtained in 2016 a PhD in Applied mathematics from the University Paris-Saclay and a PhD in Civil Engineering from the University of Minnesota, thanks to a joint program between those universities, for a thesis prepared in teams POEMS (Applied maths department, ENSTA Paristech) and in the Department of Civil, Environmental and Geo-Engineering of the UoM.

This thesis is entitled Development and use of high-order asymptotic methods to solve inverse scattering problems and was supervised by Marc Bonnet and Bojan B. Guzina.

I then spent two years (2016-2018) as a post-doc researcher in the teams Mathematical modeling for mechanics and Numerical Analysis of IRMAR (University of Rennes-1), thanks to a fellowship granted by the Centre Henri Lebesgue for a research project presented with Loïc Le Marrec, Éric Darrigrand and Fabrice Mahé. We worked on enriched finite element methods to simulate the vibrations of heterogeneous beams.

In 2018-2019, I was a postdoctoral researcher at LMA (Laboratoire de mécanique et d'acoustique) in Marseille, thanks to a fellowship granted by the Labex Mécanique et complexité for a research subject proposed by Bruno Lombard and Cédric Bellis, on the homogenization and topological optimization of microstructured media and interfaces.

In 2019-2020, I was employed by the company Inovsys as a post-doctoral researcher, and work part-time at LMA on the modelling of thermo-viscoleastic composites fur fused deposition processes.