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El-Numodis: a new tool to model dislocation and surface interactions
While surfaces are known to have a limited impact on the mechanical properties of
crystalline materials at the macroscopic scale, they play a key role at small-scale behaving …
crystalline materials at the macroscopic scale, they play a key role at small-scale behaving …
Modeling the effect of dislocation density on the strength statistics in nanoindentation
High variability in material strength is observed when the characteristic length scale of the
specimen or stressed region approaches the mean dislocation spacing. However, few efforts …
specimen or stressed region approaches the mean dislocation spacing. However, few efforts …
A Multiscale Investigation of the Physical Origins of Tension--Compression Asymmetry in Crystals and their Implications for Cyclic Behavior
S Queyreau, B Devincre - ar** single crystals
M Rajaguru, SM Keralavarma - Modelling and Simulation in …, 2018 - iopscience.iop.org
Failure by creep is a design limiting issue for metallic materials used in several high
temperature applications. Current theoretical models of creep are phenomenological with …
temperature applications. Current theoretical models of creep are phenomenological with …
Physical scaling in microstructures and avalanches of dislocation by Dislocation Dynamics simulations
M Aissaoui, C Kahloun, OU Salman… - arxiv preprint arxiv …, 2024 - arxiv.org
At the mesoscale, the avalanche-like plastic bursts are associated with statistical signatures,
whose parameters are not always well defined. In this work, we performed large scale and …
whose parameters are not always well defined. In this work, we performed large scale and …
A unifying scaling for the Bauschinger effect in highly confined thin films: a discrete dislocation plasticity study
In this study, sequential sputter deposition, diffusion bonding and focused ion beam milling
are used to fabricate sapphire micropillars encapsulating a thin single crystal niobium film. A …
are used to fabricate sapphire micropillars encapsulating a thin single crystal niobium film. A …
Computing forces on interface elements exerted by dislocations in an elastically anisotropic crystalline material
Driven by the growing interest in numerical simulations of dislocation–interface interactions
in general crystalline materials with elastic anisotropy, we develop algorithms for the …
in general crystalline materials with elastic anisotropy, we develop algorithms for the …
Analytical integration of the tractions induced by non-singular dislocations on an arbitrary shaped triangular quadratic element
S Queyreau, K Hoang, X Shi, S Aubry… - … and Simulation in …, 2020 - iopscience.iop.org
An analytical model is proposed to evaluate the nodal force induced by a segment of
dislocation upon an arbitrary shaped triangular element. This calculation is required in …
dislocation upon an arbitrary shaped triangular element. This calculation is required in …
Dislocation dynamics modeling of the interaction of dislocations with Eshelby inclusions
Materials properties are strongly influenced by their microstructures at the mesoscale.
Although dislocations‐line defects present in crystalline materials, are key to control …
Although dislocations‐line defects present in crystalline materials, are key to control …
Aspects on numerical integration of dislocation surface traction fields for discrete dislocation dynamics FEM coupling: the case of emerging dislocations
T El-Achkar, D Weygand - Modelling and Simulation in Materials …, 2020 - iopscience.iop.org
In discrete dislocation dynamics frameworks for finite samples, the evaluation of surface
tractions caused by dislocations requires special attention to capture the contributions of …
tractions caused by dislocations requires special attention to capture the contributions of …