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DTSTAMP:20210916T132529Z
LOCATION:Michel Mayor
DTSTART;TZID=Europe/Stockholm:20210706T140000
DTEND;TZID=Europe/Stockholm:20210706T160000
UID:submissions.pasc-conference.org_PASC21_sess135@linklings.com
SUMMARY:Multiscale Modeling of Materials, Part I
DESCRIPTION:Minisymposium\n\nThis minisymposium will focus on the tools an
 d the models required to accurately model material behavior under various 
 mechanical stimuli.  Continuum-scale models traditionally have difficulty 
 accounting for specific mesoscale deformation behavior due to the larger l
 ength scales (tens to hundreds of microns) at which these models are appli
 cable.  Accurately modeling fracture in higher length scale models is limi
 ted in similar ways; the sub-scale features of interest such as cracks and
 /or voids, and their interactions along boundaries cannot be resolved. Fur
 thermore, when complex and extreme loading conditions are considered, the 
 active deformation mechanisms can change, impacting overall material stren
 gth and damage evolution. Hence, the current state of the art models, part
 icularly those active at larger length scales, cannot accurately predict m
 aterial behavior especially under dynamic loading conditions. To get aroun
 d these issues, many multiscale approaches have been developed in which in
 formation is ‘passed’ from lower length scales up to higher length scales.
   While this approach is reasonable, what information is needed, how diffe
 rent models on different length scales connect, and the fidelity of these 
 connections is still not clear.  This symposium is aimed at addressing the
 se issues by bringing together modelers who have been working on modeling 
 materials across scales.\n\nUnderstanding Plasticity Contributions during 
 Shock Compression of BCC Metals at the Mesoscales\n\nDONGARE, Galitskiy, M
 a, Mishra\n\nThe deformation behavior of BCC-based microstructures under d
 ynamic loading is determined by an interplay between dislocation slip, twi
 nning, and in some cases, the phase transformation behavior. While molecul
 ar dynamics (MD) simulations can investigate this behavior at the atomic s
 cales, the unders...\n\n---------------------\nMechanistically-Informed Co
 nstitutive Law Development for Slip Transfer using Multiscale Materials Mo
 deling\n\nPhan, Gupta, Xiong, Tucker\n\nDeveloping physically-based models
  of polycrystalline materials mechanics is a crucial aspect of the scienti
 fic advancement of materials and product design, using ICME and multiscale
  modeling. These computational approaches are becoming more valuable as ad
 vanced manufacturing and novel characterizat...\n\n---------------------\n
 Associating GB Characteristics with its Sink Efficiency in Absorbing Frank
  Loops in Cu\n\nFensin, Chen, Dang, vo, Hosemann\n\nMolecular dynamics (MD
 ) simulations are performed to investigate the interaction of a migrating 
 grain boundary (GB) with interstitial Frank loops, using a set of GBs alon
 g the [100] tilt axis in Cu as model systems. Our results show that the in
 teraction is directly related to the misorientation angl...\n\n-----------
 ----------\nDislocation Transmission across sigma 3{112} Incoherent Twin B
 oundary: A Combined Atomistic and Phase-Field Study\n\nMa, Kim, Mathew, Lu
 scher, Cao...\n\nDislocation slip behavior has a significant impact on pla
 stic deformation and grain boundaries (GBs) also play an important role as
  pinning or nucleation sources for dislocations. Thus the interaction betw
 een dislocation and GBs is crucial to understand the strengthening mechani
 sm in polycrystalline...\n\n\nDomain: Chemistry and Materials, Physics, En
 gineering
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