Lucas Jean Lapostolle
I studied mechanical engineering in the French engineering school ENSTA Bretagne, in Brest, France, with a focus on numerical modeling applied to metallic materials and polymers. Courses were given by researchers from the IRDL laboratory, on quasi-static and dynamic behaviors, as well as fatigue behaviors.
I focus in my research on mechanical on mechanical modeling including viscoplasticity, dynamic simulations, stress wave propagation, for which I use well developped tools such as FE analysis softwares, as well as self-made codes.
I am currently a postdoctoral researcher in the SIMLab group at NTNU in Trondheim, Norway, and working with David Morin and Miguel Costas. The focus of the project is the experimental and numerical study of Lithium-ion pouch cells batteries for electric vehicles applications. We are interested in their behavior under mechanical loading, but also their swelling behavior during charging and discharging cycles. This project touches a large variety of disciplines: experimental caracterization, dynamic simulations, heterogeneous materials, viscoelasticity, viscoplasticity, multiphysics simulations, damage mechanics.
Prior to the postdoc position, I completed my PhD at the PIMM laboratory in Paris, France, during which I worked on the numerical study of the influence of microstructural heterogeneities on the residual stresses induced by Laser Shock Peening (LSP). In particular, we studied the effects of microstructural heterogeneities (such as in a polycrystalline material) on the stress wave propagation and on the residual fields. To achieve the various simulations needed for the work, I used both commercial finite elements softwares and codes that I developed specifically for the PhD.