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SUMMARY:Robust Elastic Metamaterial Design for Additive Fabrication
DTSTART:20180426T161500
DTEND:20180426T164500
DTSTAMP:20260508T104529Z
UID:9d9486a529d1ce488839167c911407b0824aa2bbb11788d0786abbbd
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Julian Panetta - EPFL IC IINFCOM Computer Graphics and G
 eometry Laboratory (LGG)\nAbstract Additive fabrication technologies like
  3D printing can efficiently manufacture geometry of arbitrary complexity 
 but offer only limited control over the elastic material properties of the
  printed part. In this talk\, I will present my work on designing elastic 
 metamaterials for 3D printing: periodic microstructures that are tuned to 
 emulate a large space of elastic materials. Since microstructures typicall
 y contain thin features that concentrate stress\, they are prone to plasti
 c deformation and fracture even under mild deformations of the macro-scale
  object. A key goal of my work is to design microstructures that minimize 
 these stress concentrations\, improving the metamaterials' robustness in p
 ractice. The design algorithm I developed is based on a efficient\, exact 
 solution to the worst-case stress analysis problem for periodic microstruc
 tures which supports several failure criteria (e.g.\, maximum principal st
 ress or von Mises stress)\; it produces microstructures that minimize wors
 t-case stresses while achieving a particular target elasticity tensor and 
 satisfying fabrication constraints. I also will present a design tool to o
 ptimally apply these metamaterials to achieve high-level deformation goals
 .\n\nBio Julian Panetta is a post-doctoral researcher in the LGG group at
  EPFL. He is interested in simulation and optimal design problems\, specif
 ically focusing on applications for 3D printing. 
LOCATION:MED 0 1418 https://plan.epfl.ch/?room==MED%200%201418
STATUS:CONFIRMED
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