Atomistic-to-continuum coupling

M Luskin, C Ortner - Acta Numerica, 2013 - cambridge.org
Atomistic-to-continuum (a/c) coupling methods are a class of computational multiscale
schemes that combine the accuracy of atomistic models with the efficiency of continuum …

Multiscale modeling of complex dynamic problems: an overview and recent developments

M Jebahi, F Dau, JL Charles, I Iordanoff - Archives of Computational …, 2016 - Springer
Multiscale modeling aims to solve problems at the engineering (macro) scale while
considering the complexity of the microstructure with minimum cost. Generally, two scales …

Summation rules for a fully nonlocal energy-based quasicontinuum method

JS Amelang, GN Venturini, DM Kochmann - Journal of the Mechanics and …, 2015 - Elsevier
The quasicontinuum (QC) method coarse-grains crystalline atomic ensembles in order to
bridge the scales from individual atoms to the micro-and mesoscales. A crucial cornerstone …

Formulation and optimization of the energy-based blended quasicontinuum method

M Luskin, C Ortner, B Van Koten - Computer Methods in Applied Mechanics …, 2013 - Elsevier
We formulate an energy-based atomistic-to-continuum coupling method based on blending
the quasicontinuum method for the simulation of crystal defects. We utilize theoretical results …

The quasicontinuum method: Theory and applications

DM Kochmann, JS Amelang - Multiscale materials modeling for …, 2016 - Springer
The quasicontinuum (QC) method has become a popular technique to bridge the gap
between atomistic and continuum length scales in crystalline solids. In contrast to many …

Gurtin-Murdoch surface elasticity theory revisit: an orbital-free density functional theory perspective

Y Zhu, Y Wei, X Guo - Journal of the Mechanics and Physics of Solids, 2017 - Elsevier
In the present paper, the well-established Gurtin-Murdoch theory of surface elasticity (Gurtin
and Murdoch, 1975, 1978) is revisited from an orbital-free density functional theory (OFDFT) …

Dynamical error bounds for continuum discretisation via Gauss quadrature rules—A Lieb-Robinson bound approach

MP Woods, MB Plenio - Journal of Mathematical Physics, 2016 - pubs.aip.org
Instances of discrete quantum systems coupled to a continuum of oscillators are ubiquitous
in physics. Often the continua are approximated by a discrete set of modes. We derive error …

Real-space formulation of orbital-free density functional theory using finite-element discretization: The case for Al, Mg, and Al-Mg intermetallics

S Das, M Iyer, V Gavini - Physical Review B, 2015 - APS
We propose a local real-space formulation for orbital-free density functional theory (DFT)
with density dependent kinetic energy functionals and a unified variational framework for …

Electronic-structure study of an edge dislocation in aluminum and the role of macroscopic deformations on its energetics

M Iyer, B Radhakrishnan, V Gavini - Journal of the Mechanics and Physics …, 2015 - Elsevier
We employed a real-space formulation of orbital-free density functional theory using finite-
element basis to study the defect-core and energetics of an edge dislocation in Aluminum …

[HTML][HTML] A variational formulation of dissipative quasicontinuum methods

O Rokoš, LAA Beex, J Zeman, RHJ Peerlings - International Journal of …, 2016 - Elsevier
Lattice systems and discrete networks with dissipative interactions are successfully
employed as meso-scale models of heterogeneous solids. As the application scale …