How strong is the temperature increase due to a moving dislocation?

This article calculates the temperature increase resulting from the motion of a dislocation. The temperature rise is ascribed to two separate effects, both of which are calculated: the dissipative effect resulting from the energy lost by the dislocation as it overcomes the intrinsic lattice resistan...

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Bibliographic Details
Published in:International journal of solids and structures 2017-03, Vol.108, p.263-274
Main Author: Gurrutxaga-Lerma, Beñat
Format: Article
Language:English
Subjects:
Dislocations
Dissipation
Edge dislocation
Elastodynamics
Energy dissipation
Heating
Mathematical analysis
Motional resistance
Moving dislocation
Temperature
Temperature distribution
Thermoelasticity
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Summary:This article calculates the temperature increase resulting from the motion of a dislocation. The temperature rise is ascribed to two separate effects, both of which are calculated: the dissipative effect resulting from the energy lost by the dislocation as it overcomes the intrinsic lattice resistance to its motion; and the thermomechanical effect arising from the constrained changes in volume the dilatational field of a moving dislocation may entail. The dissipative effect is studied in an uncoupled continuum solid, whilst the thermomechanical effect is studied in a fully coupled thermo-elastodynamic continuum. Explicit solutions are provided, as well as asymptotic estimates of the temperature field in the immediacy of the dislocation core.
ISSN:0020-7683
1879-2146
DOI:10.1016/j.ijsolstr.2016.12.026