Shear localization in metallic materials at high strain rates
Three factors govern adiabatic shear localization: strain hardening (or softening), strain-rate
hardening, and thermal softening. It is typically associated with large shear strains (> 1), high …
hardening, and thermal softening. It is typically associated with large shear strains (> 1), high …
Using neural networks to represent von Mises plasticity with isotropic hardening
Neural networks are universal function approximators that form the backbone of most
modern machine learning based models. Starting from a conventional return-mapping …
modern machine learning based models. Starting from a conventional return-mapping …
Relationship between strength and uniform elongation of metals based on an exponential hardening law
An exponential strain-hardening (ESH) model for single phase metals was established and
well verified by systematic experiments on Cu-Al alloys in an earlier study. In this report …
well verified by systematic experiments on Cu-Al alloys in an earlier study. In this report …
The effect of local chemical ordering on Frank-Read source activation in a refractory multi-principal element alloy
In this work, we investigate the operation of Frank-Read (FR) sources in a refractory multi-
principal element alloy (MPEA). Simulations of discrete dislocation motion in MPEAs is …
principal element alloy (MPEA). Simulations of discrete dislocation motion in MPEAs is …
[HTML][HTML] Hardening effect of diffusible hydrogen on BCC Fe-based model alloys by in situ backside hydrogen charging
Hydrogen embrittlement is common in metallic materials and a critical issue in industries
involving hydrogen-related processes. Here we investigate the mechanical response upon …
involving hydrogen-related processes. Here we investigate the mechanical response upon …
Deformation, dislocation evolution and the non-Schmid effect in body-centered-cubic single-and polycrystal tantalum
A physically-informed continuum crystal plasticity model is presented to elucidate
deformation mechanisms, dislocation evolution and the non-Schmid effect in body-centered …
deformation mechanisms, dislocation evolution and the non-Schmid effect in body-centered …
Prediction of hardening effect by irradiation-induced vacancy clusters with dislocation dynamics
K Wu, G Liu, P Yu, C Ye, J Shi, Y Shen - International Journal of Plasticity, 2022 - Elsevier
Abstract Development of irradiation hardening models attracts extensive attention in
designing nuclear materials. Dislocation dynamics (DD) method is a powerful tool in this …
designing nuclear materials. Dislocation dynamics (DD) method is a powerful tool in this …
A predictive discrete-continuum multiscale model of plasticity with quantified uncertainty
Multiscale models of materials, consisting of upscaling discrete simulations to continuum
models, are unique in their capability to simulate complex materials behavior. The …
models, are unique in their capability to simulate complex materials behavior. The …
Modeling shock-induced void collapse in single-crystal Ta systems at the mesoscales
Understanding the role of microstructural heterogeneities on the shock wave propagation
and defect evolution behavior is essential to predicting the dynamic response of metals …
and defect evolution behavior is essential to predicting the dynamic response of metals …
[HTML][HTML] On the origin of microstructural discontinuities in sliding contacts: A discrete dislocation plasticity analysis
Two-dimensional discrete dislocation plasticity (DDP) calculations that simulate single
crystal films bonded to a rigid substrate under sliding by a rigid sinusoid-shaped asperity are …
crystal films bonded to a rigid substrate under sliding by a rigid sinusoid-shaped asperity are …