Spectral discrete dislocation dynamics with anisotropic short range interactions
Sign Up to like & getrecommendations! Published in 2021 at "Computational Materials Science"
DOI: 10.1016/j.commatsci.2020.110243
Abstract: Abstract Discrete dislocation dynamics models dislocation-mediated plastic deformation and microstructural evolution in solids whilst discretely representing and tracking all line defects present in the medium. Hybrid methodologies for evaluating mechanical fields using continuum approaches while… read more here.
Keywords: anisotropic short; dislocation; dislocation dynamics; spectral discrete ... See more keywords
On the origin of microstructural discontinuities in sliding contacts: A discrete dislocation plasticity analysis
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Plasticity"
DOI: 10.1016/j.ijplas.2021.102942
Abstract: Abstract 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 performed with various contact sizes. The contact between the thin… read more here.
Keywords: contact; dislocation plasticity; dislocation; plasticity ... See more keywords
The Coupled Atomistic/Discrete-Dislocation method in 3d part I: Concept and algorithms
Sign Up to like & getrecommendations! Published in 2018 at "Journal of The Mechanics and Physics of Solids"
DOI: 10.1016/j.jmps.2018.05.004
Abstract: Abstract The Coupled Atomistic/Discrete-Dislocation (CADD) method is a concurrent multiscale technique that couples atomistic and discrete dislocation domains with the ability to pass dislocations seamlessly between domains. CADD has been demonstrated only in 2d plane-strain… read more here.
Keywords: cadd; dislocation; coupled atomistic; method ... See more keywords
Discrete dislocation dynamics simulations of dislocation-θ′ precipitate interaction in Al-Cu alloys
Sign Up to like & getrecommendations! Published in 2018 at "Journal of The Mechanics and Physics of Solids"
DOI: 10.1016/j.jmps.2018.05.015
Abstract: Abstract The mechanisms of dislocation/precipitate interaction were studied by means of discrete dislocation dynamics within a multiscale approach. Simulations were carried out using the discrete continuous method in combination with a fast Fourier transform solver… read more here.
Keywords: dislocation; discrete dislocation; precipitate; dislocation precipitate ... See more keywords
Plastic contact of self-affine surfaces: Persson’s theory versus discrete dislocation plasticity
Sign Up to like & getrecommendations! Published in 2019 at "Journal of the Mechanics and Physics of Solids"
DOI: 10.1016/j.jmps.2019.07.019
Abstract: Abstract Persson’s theory allows for a fast and effective estimate of contact area and contact stress distributions when a flat and a self-affine rough surface are pressed into contact. For elastic bodies, the results of… read more here.
Keywords: contact; dislocation plasticity; self affine; discrete dislocation ... See more keywords
Plastic relaxation and solute segregation to β-Nb second phase particles in Zr-Nb alloys: A discrete dislocation plasticity study
Sign Up to like & getrecommendations! Published in 2021 at "Journal of The Mechanics and Physics of Solids"
DOI: 10.1016/j.jmps.2021.104581
Abstract: Abstract There is clear evidence in the literature that iron segregates to the interface of second phase particles (SPPs) in unirradiated Zr-Nb alloys, and that it does not do so in the presence of radiation… read more here.
Keywords: dislocation plasticity; phase particles; second phase; plastic relaxation ... See more keywords
Discrete Dislocation Dynamics for Crystal RVEs. Part 1: Periodic Network Kinematics
Sign Up to like & getrecommendations! Published in 2022 at "Journal of the Mechanics and Physics of Solids"
DOI: 10.1016/j.jmps.2022.104861
Abstract: A novel implementation of the dislocation flux boundary condition in discrete dislocation dynamics is presented. The continuity of the individual dislocation loops in a periodic representative crystal volume (RVE) is enforced across the boundary of… read more here.
Keywords: dislocation; dislocation dynamics; rve; discrete dislocation ... See more keywords
Avalanche correlations and stress-strain curves in discrete dislocation plasticity
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review Materials"
DOI: 10.1103/physrevmaterials.5.073601
Abstract: The sequence of deformation bursts during plastic deformation exhibits scale-free features. In addition to the burst or avalanche sizes and the rate of avalanches the process is characterized by correlations in the series which become… read more here.
Keywords: stress strain; deformation; discrete dislocation; strain curves ... See more keywords