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SUMMARY:Unified Modeling of Snow and Avalanche Mechanics Using the Materia
 l Point Method
DTSTART:20180412T161500
DTEND:20180412T171500
DTSTAMP:20260916T212924Z
UID:fa9bec28a55c46e061f1c184013c561ad463f8df7048fbf3d6ffead1
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Johan Gaume - EPFL ENAC IIE Laboratory of Cryospheric Sci
 ences (CRYOS)\nAbstract Snow slab avalanches start with the failure of a 
 weak snow layer buried below a cohesive snow slab. After failure\, the ver
 y porous character of the weak layer leads to its volumetric collapse and 
 thus closing of crack faces due to the weight of the overlaying slab. This
  complex process\, generally referred to as anticrack\, explains why avala
 nches can  be remotely triggered from flat terrain. On the basis of a new
  elastoplasticity model for porous cohesive materials and the Material Poi
 nt Method (MPM)\, we accurately reproduce the propagation dynamics of anti
 cracks observed in snow fracture experiments as well as the subsequent det
 achment of the slab and the flow of the avalanche. In particular\, we perf
 ormed 3D slope scale simulations of both the release and flow of slab aval
 anches triggered either directly or remotely.\n\nBio Dr. Johan Gaume is a
  research and teaching associate in the CRYOS lab. of EPFL and scientist a
 t the SLF in Davos. His research is focused on the numerical modeling of s
 now fracture and avalanche mechanics in order to improve avalanche forecas
 ting. Last summer\, he was visiting scholar in the Department of Mathemati
 cs of UCLA where he worked on a new snow avalanche model in the research g
 roup of Joseph Teran who contributed to the snow simulations in the Disney
  movie “Frozen”.
LOCATION:MED 0 1418 https://plan.epfl.ch/?room==MED%200%201418
STATUS:CONFIRMED
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