Stochastic Crystal Plasticity Models with Internal Variables: Application to Slip Channel Formation in Irradiated Metals
Sign Up to like & getrecommendations! Published in 2019 at "Advanced Engineering Materials"
DOI: 10.1002/adem.201901208
Abstract: Stochastic crystal plasticity models are originally introduced to study slip avalanche phenomena that are ubiquitous features of the microscale plasticity of crystalline solids. Herein, a method is proposed to couple such models to the evolution… read more here.
Keywords: stochastic crystal; slip channel; crystal plasticity; plasticity ... See more keywords
Variational projection methods for gradient crystal plasticity using Lie algebras
Sign Up to like & getrecommendations! Published in 2017 at "International Journal for Numerical Methods in Engineering"
DOI: 10.1002/nme.5355
Abstract: Summary A computational method is developed for evaluating the plastic strain gradient hardening term within a crystal plasticity formulation. While such gradient terms reproduce the size effects exhibited in experiments, incorporating derivatives of the plastic… read more here.
Keywords: crystal plasticity; plastic strain; tensor; method ... See more keywords
Finite temperature atomistic‐informed crystal plasticity finite element modeling of single crystal tantalum ( α ‐Ta) at micron scale
Sign Up to like & getrecommendations! Published in 2021 at "International Journal for Numerical Methods in Engineering"
DOI: 10.1002/nme.6741
Abstract: In this work, we have developed a temperature‐dependent higher‐order Cauchy–Born (THCB) rule for multiscale crystal defect dynamics (MCDD) of crystalline solids based on the harmonic approximation. As a template, we employed the THCB rule to… read more here.
Keywords: atomistic informed; single crystal; temperature; crystal plasticity ... See more keywords
A gradient crystal plasticity theory for large deformations with a discontinuous accumulated plastic slip
Sign Up to like & getrecommendations! Published in 2017 at "Computational Mechanics"
DOI: 10.1007/s00466-017-1447-7
Abstract: The implementation of novel material models in the microscale gives a deeper understanding of inner and intercrystalline effects of crystalline materials. For future works, this allows more precise predictions of macroscale models. Here, we present… read more here.
Keywords: crystal plasticity; slip; plastic slip; gradient crystal ... See more keywords
A reduced-order method for parameter identification of a crystal plasticity model considering crystal symmetry
Sign Up to like & getrecommendations! Published in 2019 at "Science China Technological Sciences"
DOI: 10.1007/s11431-018-9353-2
Abstract: The focus of this paper is to identify the material parameters of a crystal plasticity model for Ni-base single crystal superalloys. To facilitate the stepwise calibration of the multistage flow rules, further decoupling and simplification… read more here.
Keywords: reduced order; method; plasticity model; crystal plasticity ... See more keywords
Chemo-thermo-mechanically Coupled Crystal Plasticity Simulation of Stress Evolution in Thermally Strained β-Sn Films
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Electronic Materials"
DOI: 10.1007/s11664-018-6733-4
Abstract: Whisker formation in tin films is a mode of stress relaxation, but the exact conditions causing them are yet to be established. In this work, a three-dimensional full-field chemo-thermo-mechanically coupled crystal plasticity simulation of thermally… read more here.
Keywords: thermo mechanically; crystal plasticity; stress; mechanically coupled ... See more keywords
Discrepancy Between Crystal Plasticity Simulations and Far-Field High-Energy X-ray Diffraction Microscopy Measurements
Sign Up to like & getrecommendations! Published in 2021 at "Integrating Materials and Manufacturing Innovation"
DOI: 10.1007/s40192-021-00216-5
Abstract: A three-dimensional dataset of Inconel-625 generated as part of the Air Force Research Laboratory’s Additive Manufacturing Challenge Series is considered to interrogate modeling errors in a crystal-plasticity finite-element (CPFE) framework. Grain-average elastic strains from this… read more here.
Keywords: usepackage; crystal plasticity; cpfe framework; microscopy ... See more keywords
Characterizing microscale deformation mechanisms and macroscopic tensile properties of a high strength magnesium rare-earth alloy: A combined experimental and crystal plasticity approach
Sign Up to like & getrecommendations! Published in 2020 at "Acta Materialia"
DOI: 10.1016/j.actamat.2019.12.012
Abstract: Abstract The effect of aging on the accumulation of microscale plasticity, and the resulting macroscopic mechanical behavior, were examined in the magnesium alloy WE43 under uniaxial tension. Full-field strains on the length scale of the… read more here.
Keywords: crystal plasticity; alloy; slip; characterizing microscale ... See more keywords
A crystal-plasticity model of extruded AM30 magnesium alloy
Sign Up to like & getrecommendations! Published in 2019 at "Computational Materials Science"
DOI: 10.1016/j.commatsci.2019.109140
Abstract: Abstract An enhanced crystal-plasticity finite-element model is developed to model the effects of texture, grain size and loading direction on asymmetrical tension-compression behaviour of AM30 magnesium alloy. A constitutive description of plastic deformation in the… read more here.
Keywords: am30 magnesium; model; magnesium alloy; crystal plasticity ... See more keywords
Micromechanical modeling of cyclic plastic deformation of ZK60 Mg alloy using 3D full-field crystal plasticity coupled with computational homogenization
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Fatigue"
DOI: 10.1016/j.ijfatigue.2020.105794
Abstract: Abstract A spatially resolved crystal plasticity finite element model in conjunction with computational homogenization is proposed to simulate the micromechanisms of cyclic plastic deformation of an extruded ZK60 magnesium alloy. Dislocation slipping, twinning and detwinning… read more here.
Keywords: cyclic plastic; plastic deformation; alloy; crystal plasticity ... See more keywords
Finite element multi-impact simulations using a crystal plasticity law based on dislocation dynamics
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Plasticity"
DOI: 10.1016/j.ijplas.2017.10.008
Abstract: Abstract Surface nanostructuration of metallic components has attracted significant interest since the end of the 1980s, owing to its ability to increase the material hardness, yield stress, fatigue life, and corrosion resistance. Ultrasonic shot peening… read more here.
Keywords: finite element; crystal plasticity; based dislocation; surface ... See more keywords