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DTSTAMP:20210916T132452Z
LOCATION:Michel Mayor
DTSTART;TZID=Europe/Stockholm:20210707T150000
DTEND;TZID=Europe/Stockholm:20210707T153000
UID:submissions.pasc-conference.org_PASC21_sess150_msa173@linklings.com
SUMMARY:Simulations of Material Response Using Crystal-Mechanics and Poros
 ity-Mechanics Based Modeling
DESCRIPTION:Minisymposium\n\nSimulations of Material Response Using Crysta
 l-Mechanics and Porosity-Mechanics Based Modeling\n\nBarton\n\nWe present 
 results from a computational investigation of microstructural effects on f
 ailure of ductile polycrystalline metals. The computational model makes us
 e of a crystal mechanics based constitutive model that includes porosity e
 volution. The formulation includes nucleation behavior that is fully integ
 rated into a robust numerical procedure, enhancing capabilities for modeli
 ng small length scales at which nucleation site potency and volume fractio
 n are more variable. Anisotropic crystal response and interactions among t
 he crystals produces heterogeneities that influence spall response and spa
 tial resolution of the polycrystal allows for investigation of various typ
 es of nucleation site distributions. By focusing validation efforts on mod
 els that connect directly to experimentally measurable features of the mic
 rostructure, we can then build confidence in use of the models for compone
 nts prepared under different processing routes, with different chemical co
 mpositions and attendant impurity distributions, or subjected to different
  loading conditions. This work was performed under the auspices of the U.S
 . Department of Energy by Lawrence Livermore National Laboratory under Con
 tract DE-AC52-07NA27344 (LLNL-ABS-664056).\n\nDomain: CS and Math, Chemist
 ry and Materials, Physics, Engineering
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