Study of microstructural grain and geometric size effects on plastic heterogeneities at grain-level by using crystal plasticity modeling with high-fidelity representative …

H Zhang, J Liu, D Sui, Z Cui, MW Fu - International Journal of Plasticity, 2018 - Elsevier
In-depth understanding of plastic heterogeneities at grain-level and local deformation
behaviors is pivotal in exploring the mechanical response and fracture mechanism of thin …

Machine learning-enabled identification of micromechanical stress and strain hotspots predicted via dislocation density-based crystal plasticity simulations

A Eghtesad, Q Luo, SL Shang, RA Lebensohn… - International Journal of …, 2023 - Elsevier
The present work uses a full-field crystal plasticity model with a first principles-informed
dislocation density (DD) hardening law to identify the key microstructural features correlated …

Experimental and numerical studies of coupling size effects on material behaviors of polycrystalline metallic foils in microscale plastic deformation

H Zhang, X Dong - Materials Science and Engineering: A, 2016 - Elsevier
A more comprehensive investigation of size effects is essential for the design and
optimization of micro-metal forming processes. In this work, the micro-tension of …

[HTML][HTML] Substructure-sensitive crystal plasticity with material-invariant parameters

S Dindarlou, GM Castelluccio - International Journal of Plasticity, 2022 - Elsevier
Even though crystal plasticity models have been available for decades, the quantification of
material parameters is still a matter of debate. Polycrystalline experimental results can …

Constitutive modeling of multiscale polycrystals considering grain structures and orientations

JY Zheng, JQ Ran, MW Fu - International Journal of Mechanical Sciences, 2022 - Elsevier
Traditional macro-scaled plasticity theories may not be fully valid and accurate in study of
meso-/micro-scaled deformation due to the existence of size effects (SEs). In …

Review of microstructure and micromechanism-based constitutive modeling of polycrystals with a low-symmetry crystal structure

IJ Beyerlein, M Knezevic - Journal of Materials Research, 2018 - cambridge.org
Predictions of the mechanical response of polycrystalline metals and underlying
microstructure evolution and deformation mechanisms are critically important for the …

Influence of crystal structure on size dependent deformation behavior and strain heterogeneity in micro-scale deformation

XF Tang, LF Peng, SQ Shi, MW Fu - International Journal of Plasticity, 2019 - Elsevier
Crystal structure determines the distinct deformation mode of crystalline materials and thus
plays a critical role in micro-scale deformation. The micro-deformation mechanism at grain …

Physically based crystal plasticity FEM including geometrically necessary dislocations: numerical implementation and applications in micro-forming

H Zhang, X Dong - Computational Materials Science, 2015 - Elsevier
Due to size effects, the conventional material constitutive models are no longer valid in the
investigation of micro-forming processes. In this work, a nonlocal physically based crystal …

[HTML][HTML] Micromechanical and macromechanical effects in grain scale polycrystal plasticity experimentation and simulation

D Raabe, M Sachtleber, Z Zhao, F Roters, S Zaefferer - Acta materialia, 2001 - Elsevier
A polycrystalline aluminum sample with a quasi-2D single layer of coarse grains is
plastically deformed in a channel die plane strain set-up at ambient temperature and low …

Overview of experiments on microcrystal plasticity in FCC-derivative materials: selected challenges for modelling and simulation of plasticity

DM Dimiduk, MD Uchic, SI Rao… - … and Simulation in …, 2007 - iopscience.iop.org
An important frontier in both metallurgy and mechanics is the development of a modelling
framework that accurately represents length-scale effects and dislocation structure …