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Multiscale simulation of material behavior with an emphasis on plasticity. Molecular dynamics simulation of ductile fracture in metals. Development of multiscale method including a mixed atomistic/continuum algorithm at finite temperature (Quasicontinuum).
Laurent Dupuy joined the Metals and Alloys group in September 2004 as a postdoctoral fellow. He received his Master's degree in Physics in 1997 and his Ph.D. degree in Material Science in 2000 from Institut National Polytechnique de Grenoble, France. His graduate advisors were Drs. Edgar Rauch and Jean-Jacques Blandin. His thesis is entitled "Mechanical behavior of an aluminium alloy subjected to severe elastic deformation". In this experimental work, he built an Equal Channel Angular Extrusion device and devised a system to measure quantitatively grain misorientations maps using a TEM. The grain refinement mechanism during ECAE experiments was analyzed and it was shown to be closely related the nature and amplitude of the changes of strain path during severe plastic deformation. He then worked with Dr. Marc Fivel on discrete dislocation dynamics simulations with an emphasis on the formation and strength of dislocation junctions in FCC metals. In 2001 he joined Prof. Rob Phillips at California Institute of Technology where he pursued his work on junctions strength. He then worked on an hybrid molecular dynamics/finite element algorithm with Profs. Rob Phillips, Ron Miller (Carleton University, Canada) and Ellad Tadmor (Technion, Israel).
In April 2006 Dr. Dupuy accepted a staff position at CEA in Saclay, France. There he continues to conduct research in plasticity.