Nanoindentation/scratching at finite temperatures: Insights from atomistic-based modeling

SZ Chavoshi, S Xu - Progress in Materials Science, 2019 - Elsevier
Atomistic-based multiscale and molecular dynamics modeling are powerful tools to simulate
the localized strain problems, offering tremendous opportunities to bridge the knowledge …

An atomistic-to-microscale computational analysis of the dislocation pileup-induced local stresses near an interface in plastically deformed two-phase materials

Y Peng, R Ji, T Phan, W Gao, VI Levitas, L Xiong - Acta Materialia, 2022 - Elsevier
Taking the two-phase material as a model system, here we perform atomistic-to-microscale
computational analysis on how the dislocations pileup is formed at a buried interface …

Assessment of atomistic coarse-graining methods

Y Chen, J Zimmerman, A Krivtsov… - International Journal of …, 2011 - Elsevier
This paper reviews classical theories of coarse-graining and gives a short introduction to
representative coarse-grained atomistic models that were developed based on structure …

Influence of scandium addition on microstructure and mechanical properties in nickel-based superalloys: an integrated multiscale modeling and experimental …

L Li, J Li, F Liu, L Tan, Q Fang, Y Wei - International Journal of Plasticity, 2023 - Elsevier
Microalloying has long been recognized as an effective method for improving the
mechanical properties of metallic materials and developing new ones. In this study, we …

Incorporation of tension-compression asymmetry into plastic damage phase-field modeling of quasi brittle geomaterials

T You, QZ Zhu, PF Li, JF Shao - International Journal of Plasticity, 2020 - Elsevier
Both experiments and theoretical investigations have evidenced the existence of
compressive-shear fracture mode in geomaterials like concrete, rocks and gypsum. Proper …

Concurrent atomistic–continuum simulations of dislocation–void interactions in fcc crystals

L Xiong, S Xu, DL McDowell, Y Chen - International Journal of Plasticity, 2015 - Elsevier
Dislocation interactions with distributed condensed vacancy clusters in fcc metals were
simulated via a concurrent atomistic–continuum method. Due to void strengthening, the …

Sequential slip transfer of mixed-character dislocations across Σ3 coherent twin boundary in FCC metals: a concurrent atomistic-continuum study

S Xu, L Xiong, Y Chen, DL McDowell - npj Computational Materials, 2016 - nature.com
Sequential slip transfer across grain boundaries (GB) has an important role in size-
dependent propagation of plastic deformation in polycrystalline metals. For example, the …

Comparative modeling of the disregistry and Peierls stress for dissociated edge and screw dislocations in Al

S Xu, JR Mianroodi, A Hunter, B Svendsen… - International Journal of …, 2020 - Elsevier
Many elementary deformation processes in metals involve the motion of dislocations. The
planes of glide and specific processes dislocations prefer depend heavily on their atomic …

Multiscale coupling of molecular dynamics and peridynamics

Q Tong, S Li - Journal of the Mechanics and Physics of Solids, 2016 - Elsevier
We propose a multiscale computational model to couple molecular dynamics and
peridynamics. The multiscale coupling model is based on a previously developed multiscale …

Concurrent atomistic-continuum modeling of crystalline materials

Y Chen, S Shabanov, DL McDowell - Journal of Applied Physics, 2019 - pubs.aip.org
In this work, we present a concurrent atomistic-continuum (CAC) method for modeling and
simulation of crystalline materials. The CAC formulation extends the Irving-Kirkwood …