Molecular statics simulation of dislocation pileup using quasicontinuum method

Karel Mikes; Ondřej Rokos; Ron H.J. Peerlings

doi:10.21495/91-8-553

Molecular statics simulation of dislocation pileup using quasicontinuum method

Karel Mikes, Ondřej Rokos, Ron H.J. Peerlings

Mechanics of Materials

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/Congresprocedure › Conferentiebijdrage › Academic › peer review

Samenvatting

In this contribution, accuracy of the QuasiContinuum (QC) methodology is studied for the case of dislocation pileup against an impenetrable obstacle in two-dimensional hexagonal lattices. To this end, a simplified shear test with a predetermined horizontal glide plane and next-to-nearest interactions described by the Lennard-Jones potential is adopted. The full molecular statics solution is computed, which is compared to two different QC simulations in terms of spatial positioning of individual dislocations along the glide plane, corresponding disregistry profiles, and dislocation core structures.

Originele taal-2	Engels
Titel	Proceedings of the 24th International Conference Engineering Mechanics 2018
Plaats van productie	Prague
Uitgeverij	Institute of Theoretical and Applied Mechanics Academy of Sciences of the Czech Republic
Pagina's	553-556
Aantal pagina's	4
ISBN van elektronische versie	978-80-86246-91-8
ISBN van geprinte versie	978-80-86246-88-8
DOI's	https://doi.org/10.21495/91-8-553
Status	Gepubliceerd - 2018
Evenement	24th International Conference Engineering Mechanics 2018 - Svratka, Tsjechië Duur: 14 mei 2018 → 17 mei 2018

Congres

Congres	24th International Conference Engineering Mechanics 2018
Land	Tsjechië
Stad	Svratka
Periode	14/05/18 → 17/05/18

Toegang tot document

10.21495/91-8-553

Citeer dit

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title = "Molecular statics simulation of dislocation pileup using quasicontinuum method",

abstract = "In this contribution, accuracy of the QuasiContinuum (QC) methodology is studied for the case of dislocation pileup against an impenetrable obstacle in two-dimensional hexagonal lattices. To this end, a simplified shear test with a predetermined horizontal glide plane and next-to-nearest interactions described by the Lennard-Jones potential is adopted. The full molecular statics solution is computed, which is compared to two different QC simulations in terms of spatial positioning of individual dislocations along the glide plane, corresponding disregistry profiles, and dislocation core structures.",

keywords = "atomistic simulation, molecular statics, QuasiContinuum, dislocation pileup",

author = "Karel Mikes and Ond{\v r}ej Rokos and Peerlings, {Ron H.J.}",

year = "2018",

doi = "10.21495/91-8-553",

language = "English",

isbn = "978-80-86246-88-8",

pages = "553--556",

booktitle = "Proceedings of the 24th International Conference Engineering Mechanics 2018",

publisher = "Institute of Theoretical and Applied Mechanics Academy of Sciences of the Czech Republic",

note = "24th International Conference Engineering Mechanics 2018 ; Conference date: 14-05-2018 Through 17-05-2018",

}

Mikes, K, Rokos, O & Peerlings, RHJ 2018, Molecular statics simulation of dislocation pileup using quasicontinuum method. in Proceedings of the 24th International Conference Engineering Mechanics 2018. Institute of Theoretical and Applied Mechanics Academy of Sciences of the Czech Republic, Prague, blz. 553-556, 24th International Conference Engineering Mechanics 2018, Svratka, Tsjechië, 14/05/18. https://doi.org/10.21495/91-8-553

Molecular statics simulation of dislocation pileup using quasicontinuum method. / Mikes, Karel; Rokos, Ondřej ; Peerlings, Ron H.J.

Proceedings of the 24th International Conference Engineering Mechanics 2018. Prague : Institute of Theoretical and Applied Mechanics Academy of Sciences of the Czech Republic, 2018. blz. 553-556.

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/Congresprocedure › Conferentiebijdrage › Academic › peer review

TY - GEN

T1 - Molecular statics simulation of dislocation pileup using quasicontinuum method

AU - Mikes, Karel

AU - Rokos, Ondřej

AU - Peerlings, Ron H.J.

PY - 2018

Y1 - 2018

N2 - In this contribution, accuracy of the QuasiContinuum (QC) methodology is studied for the case of dislocation pileup against an impenetrable obstacle in two-dimensional hexagonal lattices. To this end, a simplified shear test with a predetermined horizontal glide plane and next-to-nearest interactions described by the Lennard-Jones potential is adopted. The full molecular statics solution is computed, which is compared to two different QC simulations in terms of spatial positioning of individual dislocations along the glide plane, corresponding disregistry profiles, and dislocation core structures.

AB - In this contribution, accuracy of the QuasiContinuum (QC) methodology is studied for the case of dislocation pileup against an impenetrable obstacle in two-dimensional hexagonal lattices. To this end, a simplified shear test with a predetermined horizontal glide plane and next-to-nearest interactions described by the Lennard-Jones potential is adopted. The full molecular statics solution is computed, which is compared to two different QC simulations in terms of spatial positioning of individual dislocations along the glide plane, corresponding disregistry profiles, and dislocation core structures.

KW - atomistic simulation

KW - molecular statics

KW - QuasiContinuum

KW - dislocation pileup

U2 - 10.21495/91-8-553

DO - 10.21495/91-8-553

M3 - Conference contribution

SN - 978-80-86246-88-8

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EP - 556

BT - Proceedings of the 24th International Conference Engineering Mechanics 2018

PB - Institute of Theoretical and Applied Mechanics Academy of Sciences of the Czech Republic

CY - Prague

T2 - 24th International Conference Engineering Mechanics 2018

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