A dynamic discrete dislocation plasticity study of elastodynamic shielding of stationary cracks

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A dynamic discrete dislocation plasticity study of elastodynamic shielding of stationary cracks. / Gurrutxaga Lerma, Benat; Balint, Daniel S.; Dini, Daniele; Sutton, A. P.

In: Journal of the Mechanics and Physics of Solids, Vol. 98, 01.01.2017, p. 1-11.

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@article{b545d24026af4e4aa6e64d8f3778629a,
title = "A dynamic discrete dislocation plasticity study of elastodynamic shielding of stationary cracks",
abstract = "Employing Dynamic Discrete Dislocation Plasticity (D3P), an elastodynamic analysis of the shielding of a stationary crack tip by dislocations is studied. Dislocations are generated via Frank–Read sources, and make a negligible contribution to the shielding of the crack tip, whereas dislocations generated at the crack tip via homogeneous nucleation dominate the shielding. Their effect is found to be highly localised around the crack, leading to a magnification of the shielding when compared to time-independent, elastostatic predictions. The resulting attenuation of KI(t) is computed, and is found to be directly proportional to the applied load and to √t.",
author = "{Gurrutxaga Lerma}, Benat and Balint, {Daniel S.} and Daniele Dini and Sutton, {A. P.}",
year = "2017",
month = jan
day = "1",
doi = "10.1016/j.jmps.2016.08.014",
language = "English",
volume = "98",
pages = "1--11",
journal = "Journal of the Mechanics and Physics of Solids",
issn = "0022-5096",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - A dynamic discrete dislocation plasticity study of elastodynamic shielding of stationary cracks

AU - Gurrutxaga Lerma, Benat

AU - Balint, Daniel S.

AU - Dini, Daniele

AU - Sutton, A. P.

PY - 2017/1/1

Y1 - 2017/1/1

N2 - Employing Dynamic Discrete Dislocation Plasticity (D3P), an elastodynamic analysis of the shielding of a stationary crack tip by dislocations is studied. Dislocations are generated via Frank–Read sources, and make a negligible contribution to the shielding of the crack tip, whereas dislocations generated at the crack tip via homogeneous nucleation dominate the shielding. Their effect is found to be highly localised around the crack, leading to a magnification of the shielding when compared to time-independent, elastostatic predictions. The resulting attenuation of KI(t) is computed, and is found to be directly proportional to the applied load and to √t.

AB - Employing Dynamic Discrete Dislocation Plasticity (D3P), an elastodynamic analysis of the shielding of a stationary crack tip by dislocations is studied. Dislocations are generated via Frank–Read sources, and make a negligible contribution to the shielding of the crack tip, whereas dislocations generated at the crack tip via homogeneous nucleation dominate the shielding. Their effect is found to be highly localised around the crack, leading to a magnification of the shielding when compared to time-independent, elastostatic predictions. The resulting attenuation of KI(t) is computed, and is found to be directly proportional to the applied load and to √t.

UR - http://www.scopus.com/inward/record.url?scp=84987956530&partnerID=8YFLogxK

U2 - 10.1016/j.jmps.2016.08.014

DO - 10.1016/j.jmps.2016.08.014

M3 - Article

AN - SCOPUS:84987956530

VL - 98

SP - 1

EP - 11

JO - Journal of the Mechanics and Physics of Solids

JF - Journal of the Mechanics and Physics of Solids

SN - 0022-5096

ER -