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SUMMARY:MEchanics GAthering –MEGA- Seminar: Hydroelectric Dam Expansion 
 and Damage: 3D Multiscale Simulation using FFT Solvers and Neural Networks
DTSTART:20260312T130500
DTEND:20260312T140000
DTSTAMP:20260405T201845Z
UID:2bfa53f1cb8f3921753c229266a2079f931fb21d459825b8f09dfbb3
CATEGORIES:Conferences - Seminars
DESCRIPTION:Lucas Fourel (LSMS\, EPFL)\nAbstract: Hydroelectric dams are 
 a crucial source of energy\, particularly for Switzerland\, where they con
 stitute the majority of electricity production. Unfortunately\, a signific
 ant portion of these structures undergoes expansion and damage due to the 
 alkali-silica reaction\, a phenomenon affecting concrete elements exposed 
 to water.\nWe have developed a 3D multiscale numerical model to simulate f
 racture in concrete mesostructures and analyze its impact on the dam's mac
 roscopic behavior. To reduce the computational cost of these simulations\,
  we employ efficient approaches based on Fast Fourier Transform (FFT) solv
 ers. Furthermore\, we investigate a second approach in which mesoscale sim
 ulations are precomputed to train a neural network on simulated concrete f
 racture data. This network is then integrated into dam simulations to furt
 her accelerate computations. In this seminar\, we will present an overview
  of these methods\, demonstrating their efficient application to multiscal
 e problems and discussing their computational performance.\n\nBio: Followi
 ng my Master's and PhD in mechanical engineering at INSA Lyon\, I joined t
 he Computational Solid Mechanics Laboratory (LSMS) at EPFL in Lausanne as 
 a postdoctoral researcher. My work focused on advancing numerical methods 
 for solid materials\, leveraging finite elements\, FFT-based solvers\, and
  neural networks. I applied these computational techniques to a diverse ra
 nge of materials\, from polycrystalline metals to composites like concrete
  and porous ceramics\, addressing critical challenges in mechanical and ci
 vil engineering\, including rolling element bearings\, gears\, and hydroel
 ectric dams.
LOCATION:ME B1 10 https://plan.epfl.ch/?room==ME%20B1%2010 https://epfl.zo
 om.us/j/68096021948?pwd=DiE8amDIwYw1u3VtW2xWNGKtioKL2y.1
STATUS:CONFIRMED
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