Person
Jaehyun Cho
This person is no longer with EPFL
Related publications (7)
Coupled Atomistics and Discrete Dislocations in 3d (CADD-3d)
Jean-François Molinari, William Curtin, Guillaume Anciaux, Till Junge, Jaehyun Cho, Max Ludwig Hodapp
Capturing plasticity at realistic dislocation densities with high configurational complexity requires a continuum-leveldiscrete dislocation dynamics (DDD) description. However, many features controlling dislocation motion areinherently atomistic, such as t ...
2018Mobility law of dislocations with several character angles and temperatures in FCC Aluminum
Jean-François Molinari, Guillaume Anciaux, Jaehyun Cho
We study the mobility law of dislocations in aluminum as an important building block for the development of a multiscale method that couples an atomistic model with discrete dislocation dynamics in 3d (\eg CADD3d). Straight dislocations of arbitrary charac ...
Elsevier20173D coupled dislocation dynamics in nano- and micro-scales
Jean-François Molinari, Guillaume Anciaux, Jaehyun Cho
During the last decades, as usages of Nano- and Micro-Electro-Mechanical Systems (MEMS and NEMS) increase significantly, it becomes necessary to understand performances (e.g. strength and ductility) of small-scaled materials. In such small scales, dislocat ...
2017Coupled 3D Dislocation Modeling at Nano- and Micro-Scales
The performance of crystalline materials varies depending on the considered scale. To understand the size dependence of materials properties, the interaction and evolution of defects are essential. As such, the role played by dislocations is crucial for mo ...
EPFL2017Coupled 3D dislocation dynamics at nano- and micro-scales
Jean-François Molinari, Guillaume Anciaux, Jaehyun Cho
Dislocation dynamics are important to understand material plasticity effects, e.g. size dependent strain hardening. Dislocations are nucleated at nano-scale, and interact with other defects including grain boundaries and other dislocations at micro-scale. ...
2016Dislocations 2016
Jean-François Molinari, Guillaume Anciaux, Jaehyun Cho
Dislocation dynamics are important to understand material plasticity in small-sized materials. In case of face-centered cubic crystalline systems, densities of initial dislocations, dislocation nucleations and starvations processes influence material stren ...
2016Toward a 3D coupled atomistic and discrete dislocation dynamics simulation: dislocation core structures and Peierls stresses with several character angles in FCC aluminum
Jean-François Molinari, Guillaume Anciaux, Till Junge, Jaehyun Cho
We present a robust method to obtain the displacement field of a dislocation core, which is one of the building blocks for the development of a direct multiscale method coupling an atomistic domain to a discrete dislocation dynamics engine in 3D (e.g. CADD ...
2015