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DTSTAMP:20210916T132449Z
LOCATION:Michel Mayor
DTSTART;TZID=Europe/Stockholm:20210706T140000
DTEND;TZID=Europe/Stockholm:20210706T143000
UID:submissions.pasc-conference.org_PASC21_sess135_msa328@linklings.com
SUMMARY:Mechanistically-Informed Constitutive Law Development for Slip Tra
 nsfer using Multiscale Materials Modeling
DESCRIPTION:Minisymposium\n\nMechanistically-Informed Constitutive Law Dev
 elopment for Slip Transfer using Multiscale Materials Modeling\n\nPhan, Gu
 pta, Xiong, Tucker\n\nDeveloping physically-based models of polycrystallin
 e materials mechanics is a crucial aspect of the scientific advancement of
  materials and product design, using ICME and multiscale modeling. These c
 omputational approaches are becoming more valuable as advanced manufacturi
 ng and novel characterization techniques progress toward more integrated p
 latforms. Traditionally, continuum-scale crystal plasticity models are lev
 eraged to model deformation of polycrystalline microstructures with micron
  sized grains. In these models, the constitutive laws that capture disloca
 tion/interface mediated plasticity are often empirically-based or sometime
 s informed by results from smaller-scale calculations. However, the appare
 nt disconnect between length scales of different simulations shed doubt on
  the fidelity of such multi-scale modeling approaches, especially when cap
 turing complex interactions between dislocations and interfaces. In this s
 tudy, dislocation-interface (i.e., slip transfer) dynamics are investigate
 d using combined atomistic continuum (CAC) simulations. The mechanics of b
 ulk defect free regions in these simulations are modeled using continuum s
 cale finite element formulation, while defected regions stemming from disl
 ocation, interfaces and their interactions are modeled with full atomistic
  resolution. The influence of grain boundary character is probed regarding
  slip transfer in both bicrystalline and polycrystalline systems. Further,
  we highlight the fundamental deformation mechanisms within the interface 
 that are responsible for varying behaviors and dynamics of slip transfer.\
 n\nDomain: Chemistry and Materials, Physics, Engineering
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