Seminar of Dr. Ricardo Lebensohn from Los Alamos National Laboratory (USA), entitle “FFT-based polycrystal mechanics models combined with data analytics and experimental integration” – September 10th at 12:00 pm, in the Seminar Room


Crystal mechanics (CM) models, are increasingly used in engineering applications to obtain microstructure-sensitive mechanical response of polycrystalline materials. Full‐field CM formulations based on Fast Fourier Transforms (FFT) are an efficient alternative to CM Finite Elements, therefore well adapted for forward-modelling of micromechanical experiments, as well as for combination with data analytics methods for formulation of reduced-order models, data inversion/interpretation, etc. Also, since FFT‐based models operate directly on voxelized microstructural images, they are ideally suited for combination with emerging characterization methods in Experimental Mechanics that typically produce such images. After presenting the main characteristics of FFT‐based models and recent extensions, we will show examples of synergistic combination of these models with data analytics and 3-D characterization experiments.