Dislocation dynamics in anisotropic thermoelastic-piezoelectric crystals

2005 ◽  
pp. 496-499
Author(s):  
Sitiro Minagawa
Keyword(s):  
Dislocation Dynamics ◽  
Piezoelectric Crystals

Dislocation dynamics in anisotropic piezoelectric crystals

1987 ◽  
Vol 56 (3) ◽  
pp. 343-352 ◽  
Author(s):  
Sitiro Minagawa ◽  
Kazuhito Shintani
Keyword(s):  
Dislocation Dynamics ◽  
Piezoelectric Crystals

Dislocation dynamics in anisotropic piezoelectric crystals

1985 ◽  
Vol 51 (2) ◽  
pp. 277-285 ◽  
Author(s):  
Sitiro Minagawa ◽  
Kazuhito Shintani
Keyword(s):  
Dislocation Dynamics ◽  
Piezoelectric Crystals

scholarly journals Theory of the deformation of aligned polyethylene

2015 ◽  
Vol 471 (2180) ◽  
pp. 20150171 ◽  
Author(s):  
A. Hammad ◽  
T. D. Swinburne ◽  
H. Hasan ◽  
S. Del Rosso ◽  
L. Iannucci ◽  
...  
Keyword(s):  
Load Transfer ◽  
Tensile Load ◽  
Equation Of Motion ◽  
Dislocation Dynamics ◽  
Viscoelastic Deformation ◽  
Transfer Length ◽  
Soliton Dynamics ◽  
Fluctuation Dissipation ◽  
Pull Out ◽  
Definition Of

Solitons are proposed as the agents of plastic and viscoelastic deformation in aligned polyethylene. Interactions between straight, parallel molecules are mapped rigorously onto the Frenkel–Kontorova model. It is shown that these molecular interactions distribute an applied load between molecules, with a characteristic transfer length equal to the soliton width. Load transfer leads to the introduction of tensile and compressive solitons at the chain ends to mark the onset of plasticity at a well-defined yield stress, which is much less than the theoretical pull-out stress. Interaction energies between solitons and an equation of motion for solitons are derived. The equation of motion is based on Langevin dynamics and the fluctuation–dissipation theorem and it leads to the rigorous definition of an effective mass for solitons. It forms the basis of a soliton dynamics in direct analogy to dislocation dynamics. Close parallels are drawn between solitons in aligned polymers and dislocations in crystals, including the configurational force on a soliton. The origins of the strain rate and temperature dependencies of the viscoelastic behaviour are discussed in terms of the formation energy of solitons. A failure mechanism is proposed involving soliton condensation under a tensile load.

scholarly journals Dislocation dynamics prediction of the strength of Al–Cu alloys containing shearable θ′′ precipitates

2021 ◽  
Vol 151 ◽  
pp. 104375
Author(s):  
R. Santos-Güemes ◽  
L. Capolungo ◽  
J. Segurado ◽  
J. LLorca
Keyword(s):  
Dislocation Dynamics ◽  
Cu Alloys

Phonon focusing in piezoelectric crystals: Quartz and lithium niobate

1984 ◽  
Vol 30 (6) ◽  
pp. 3470-3481 ◽  
Author(s):  
G. L. Koos ◽  
J. P. Wolfe
Keyword(s):  
Lithium Niobate ◽  
Piezoelectric Crystals ◽  
Phonon Focusing

scholarly journals Diffusion and interaction of prismatic dislocation loops simulated by stochastic discrete dislocation dynamics

2019 ◽  
Vol 3 (7) ◽  
Author(s):  
Yang Li ◽  
Max Boleininger ◽  
Christian Robertson ◽  
Laurent Dupuy ◽  
Sergei L. Dudarev
Keyword(s):  
Dislocation Dynamics ◽  
Dislocation Loops ◽  
Discrete Dislocation Dynamics ◽  
Discrete Dislocation

Dislocation dynamics in cyclic plastic deformation

1995 ◽  
Vol 60 (5) ◽  
pp. 497-503 ◽  
Author(s):  
M. Zaiser ◽  
W. Frank
Keyword(s):  
Plastic Deformation ◽  
Dislocation Dynamics ◽  
Cyclic Plastic ◽  
Cyclic Plastic Deformation
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