CEE Seminar - Deep-Learning Enabled Multiscale Poromechanics: From Brittle Fracture to Ductile Flow

Sep 17

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September 17, 2018 - 12:00pm to 1:00pm


WaiChing Sun, Assistant Professor, Columbia University, Dept. of Civil Engineering and Engineering Mechanics

Many geomechanical applications, such as geological disposal of nuclear waste and CO2, require reliable predictions of the multiscale thermo-hydro-mechanical responses of fluid-infiltrating porous media exposed to extreme environments. While hierarchical multiscale method such as DEM-FEM and FEM2 are proven to be effective to link simulations between two length scales, the multi-porosity nature of fractured porous media often leads to complex geometrical attributes that spans multiple length scales [1,2,3,4]. This multiscale coupling is particularly difficult to model for anisotropic materials where the principle direction of material responses is sensitive to the size of representation elementary volume [5]. In this seminar, we will present an alternative homogenization approach that takes advantage of deep reinforcement learning....