Скачать с ютуб J. Carlos Santamarina - InterPore2023 Plenary Lecture: Multi-Physics Repetitive Loads в хорошем качестве

J. Carlos Santamarina - InterPore2023 Plenary Lecture: Multi-Physics Repetitive Loads

Recorded at Edinburgh International Conference Center on 25 May 2023. Title: Multi-Physics Repetitive Loads Abstract: Most natural and engineered systems experience repetitive loading cycles of all kinds, including: stress (our bones and foundations), fluid pressure (the beating of our hearts, tidal action, and pumped hydro storage), suction (our lungs and natural dry-wet cycles), pore fluid chemistry (salt-water intrusion), and thermal cycles (such as silos, freeze-thaw, and geothermal systems). Repetitive loads can cause significant accumulations of volumetric strain (towards the terminal void ratio) and plastic shear strains (shakedown or ratcheting), lead to accelerated transport (of heat, chemical species and particles), and alter material properties and system performance. Complementary multi-scale experiments and simulations provide unique insights into the underlying mechanisms that explain the observed responses. Analysis and design must consider the influence of multi-physics repetitive loads on the long-term performance, serviceability and safety of engineered systems. Asymptotic trends can be used to obtain first-order estimates for simple boundary conditions; however, complex boundary conditions require numerical simulations, the development of new constitutive models and the implementation of hybrid algorithms that avoid standard time-stepping numerical protocols. Bio: J. Carlos Santamarina's research focuses on the fundamental study of geomaterials and subsurface coupled processes at multiple scales. The implementation of this research has involved the development and utilization of multi-scale experimental methods, high-resolution process monitoring, forward modeling and inverse problem solving. Using this theoretical and experimental research framework, Santamarina and coworkers explore critical problems in energy geoengineering, with emphasis on oil and gas, and the geological storage of CO2 and nuclear waste. The team has co-authored two books and more than 400 articles which summarize salient concepts and research results. Santamarina is a corresponding member of the Argentinean National Academy of Sciences and the National Academy of Engineering. He holds a Ph.D. from Purdue University, M.S. from the University of Maryland, and B.Sc. from Universidad de Cordoba.