Situating the Vector Density Approach Among Contemporary Continuum Theories of Dislocation Dynamics
Situating the Vector Density Approach Among Contemporary Continuum Theories of Dislocation Dynamics
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将矢量密度方法置于当代位错动力学连续体理论中
DOI:
10.1115/1.4052066
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
El-Azab, Anter
中科院分区:
文献类型:
--
作者:
Anderson, Joseph Pierre;Vivekanandan, Vignesh;Lin, Peng;Starkey, Kyle;Pachaury, Yash;El-Azab, Anter
For the past century, dislocations have been understood to be the carriers of plastic deformation in crystalline solids. However, their collective behavior is still poorly understood. Progress in understanding the collective behavior of dislocations has primarily come in one of two modes: the simulation of systems of interacting discrete dislocations and the treatment of density measures of varying complexity that are considered as continuum fields. A summary of contemporary models of continuum dislocation dynamics is presented. These include, in order of complexity, the two-dimensional statistical theory of dislocations, the field dislocation mechanics treating the total Kröner–Nye tensor, vector density approaches that treat geometrically necessary dislocations on each slip system of a crystal, and high-order theories that examine the effect of dislocation curvature and distribution over orientation. Each of theories contain common themes, including statistical closure of the kinetic dislocation transport equations and treatment of dislocation reactions such as junction formation. An emphasis is placed on how these common themes rely on closure relations obtained by analysis of discrete dislocation dynamics experiments. The outlook of these various continuum theories of dislocation motion is then discussed.
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DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
T. Hochrainer;M. Zaiser;P. Gumbsch
通讯作者:
P. Gumbsch
DOI:
10.1088/1361-651x/ab97ef
发表时间:
2020
影响因子:
1.8
作者:
Markus Sudmanns;J. Bach;D. Weygand;K. Schulz
通讯作者:
K. Schulz
DOI:
10.1103/physrevb.103.174101
发表时间:
2020
期刊:
Handbook of Materials Modeling
影响因子:
--
作者:
I. Groma;P. D. Isp'anovity;T. Hochrainer
通讯作者:
T. Hochrainer
影响因子:
1.2
作者:
T. Khraishi;H. Zbib;T. D. de la Rubia;M. Victoria
通讯作者:
M. Victoria
DOI:
10.1002/pamm.201900441
发表时间:
2019
期刊:
PAMM
影响因子:
--
作者:
Benedikt Weger;T. Hochrainer
通讯作者:
T. Hochrainer