Zobrazeno 1 - 10
of 66
pro vyhledávání: '"Jeremy Q. Broughton"'
Publikováno v:
MRS Bulletin. 25:27-32
Our understanding of materials phenomena is based on a hierarchy of physical descriptions spanning the space-time regimes of electrons, atoms, and matter and given by the theories of quantum mechanics, statistical mechanics, and continuum mechanics.
Autor:
J V Lill, Jeremy Q Broughton
Publikováno v:
Modelling and Simulation in Materials Science and Engineering. 8:345-355
The computation of a solid-solid interfacial free energy requires the calculation of the work required to form the interface from the perfect crystal along any reversible pathway. The practical difficulty lies in finding a computational path connecti
Autor:
Jeremy Q Broughton, J V Lill
Publikováno v:
Modelling and Simulation in Materials Science and Engineering. 8:357-375
The use of either linear or nonlinear elastic theory in deriving methodologies for atomistic simulations is shown to be based on two very different views of the interaction of the `system' with the `reservoir'. These views may be related through the
Publikováno v:
Physical Review B. 60:2391-2403
A strategic objective of computational materials physics is the accurate description of specific materials on length scales approaching the meso and macroscopic. We report on progress towards this goal by describing a seamless coupling of continuum t
Autor:
Jeremy Q. Broughton, Michael J. Mehl
Publikováno v:
Physical Review B. 59:9259-9270
Publikováno v:
Europhysics Letters (EPL). 44:783-787
We have coupled the continuum, the atomistic, and the quantum descriptions of matter for a unified treatment of the dynamic fracture of silicon. We have devised schemes for handshaking between the finite-element, molecular dynamics and semi-empirical
Autor:
Bruce R. Land, David Lifka, Farid F. Abraham, W. E. Rudge, Dominique Brodbeck, David J. Schneider, Jeremy Q. Broughton, M. Rosenkrantz, Huajian Gao, J. Gerner, J. Skovira
Publikováno v:
Modelling and Simulation in Materials Science and Engineering. 6:639-670
As our title implies, we consider materials failure at the fundamental level of atomic bond breaking and motion. Using computational molecular dynamics, scalable parallel computers and visualization, we are studying the failure of notched solids unde
Autor:
Jeremy Q. Broughton, Robert E. Rudd
Publikováno v:
Physical Review B. 58:R5893-R5896
We develop a technique for simulation of the mechanics of micron-scale solid systems: coarse-grained molecular dynamics (CGMD). It captures the important atomistic effects without the computational cost of conventional molecular dynamics (MD). The CG
Autor:
Jeremy Q. Broughton, G H Gilmer
Publikováno v:
Modelling and Simulation in Materials Science and Engineering. 6:393-404
We present a harmonic analysis of symmetric tilt boundaries in face-centred cubic Lennard-Jones systems with a view to finding their thermodynamic properties. These results are used to predict those which are likely candidates for interface melting a
Autor:
Farid F. Abraham, Jeremy Q. Broughton
Publikováno v:
Computational Materials Science. 10:1-9
We are simulating the failure of three-dimensional notched fcc solids under mode one tension using molecular dynamics, simple interatomic potentials and system of tens of millions of atoms. We have discovered that crystal orientation with respect to