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@article{Gurrutxaga-Lerma:2015:10.1115/1.4030320,
author = {Gurrutxaga-Lerma, B and Balint, DS and Dini, D and Eakins, DE and Sutton, AP},
doi = {10.1115/1.4030320},
journal = {Journal of Applied Mechanics-Transactions of the ASME},
title = {The Role of Homogeneous Nucleation in Planar Dynamic Discrete Dislocation Plasticity},
url = {http://dx.doi.org/10.1115/1.4030320},
volume = {82},
year = {2015}
}
TY - JOUR
AB - Homogeneous nucleation of dislocations is the dominant dislocation generation mechanismat strain rates above 108 s1; at those rates, homogeneous nucleation dominates theplastic relaxation of shock waves in the same way that Frank–Read sources control theonset of plastic flow at low strain rates. This article describes the implementation ofhomogeneous nucleation in dynamic discrete dislocation plasticity (D3P), a planarmethod of discrete dislocation dynamics (DDD) that offers a complete elastodynamictreatment of plasticity. The implemented methodology is put to the test by studying fourmaterials—Al, Fe, Ni, and Mo—that are shock loaded with the same intensity and astrain rate of 1010 s1. It is found that, even for comparable dislocation densities, the latticeshear strength is fundamental in determining the amount of plastic relaxation a materialdisplays when shock loaded. [DO
AU - Gurrutxaga-Lerma,B
AU - Balint,DS
AU - Dini,D
AU - Eakins,DE
AU - Sutton,AP
DO - 10.1115/1.4030320
PY - 2015///
SN - 1528-9036
TI - The Role of Homogeneous Nucleation in Planar Dynamic Discrete Dislocation Plasticity
T2 - Journal of Applied Mechanics-Transactions of the ASME
UR - http://dx.doi.org/10.1115/1.4030320
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000355941900009&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
VL - 82
ER -