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, 2001 At first, let us recall some postulates of continuum mechanics. Any model of the crystal behaviour must satisfy the general rules discussed in the Chapter 2: the local principle of mass conservation (2.60); the principle of balance of linear momentum equivalent to Cauchy’s equations of motion (2.64); the principle of balance of angular ...
Wiktor Gambin, Wiktor Gambin
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Plasticity of perfect crystals
Journal of Low Temperature Physics, 1992A specific type of plasticity induced by complicated pointlike thermally-induced defects is proposed. In this case it is possible to derive a system of hydrodynamic equations describing bulk crystal dynamics and a set of boundary conditions for them for both crystal-crystal and crystal-liquid interfaces.
A. F. Andreev +2 more
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Plasticity of Crystals of Sylvine [PDF]
Nature, 1935 ATTENTION has frequently been directed to the plasticity of crystals of rocksalt when immersed in water. Some see the cause of the plasticity in the removal of surface layers with their cracks and defects. Others suppose that water penetrates the crystal lattice and acts as a lubricant.
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Micromorphic Crystal Plasticity
2018International ...
Forest, S., Mayeur, J., Mcdowell, D.
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Plastic Rheology of Crystals [PDF]
, 2013 When crystals are strained above a certain limit, they cease behaving like elastic solids and become plastic. Plastic deformation is an irreversible, isovolume process, which results in a permanent shear strain after the shear stress that caused it has been removed. Hydrostatic pressure alone does not produce plastic deformation.
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Simulation of Plastic Crystals [PDF]
, 1990 Traditionally, the name of “Plastic Crystals” has been reserved, because of their macroscopic properties, to some molecular crystals. These organic compounds have a high temperature phase, just below the melting point where the vapour pressure is relatively high and the deformation is easy. These plastic phases are highly symmetric, generally cubic and
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Relaxation dynamics in plastic crystals
The Journal of Chemical Physics, 2002We report dielectric data on six different plastic crystalline materials, namely 1-cyanoadamantane, adamantanone, pentachloronitrobenzene, cyclo-hexanol, ethanol, and meta-carborane, covering a frequency range of up to 14 decades and up to 20 GHz. Information on phase transitions, the α-relaxation, and relaxation processes beyond the α-relaxation are ...
Brand, Robert +2 more
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On thermodynamics of crystal plasticity
Scripta Materialia, 2006Abstract It is argued in this paper that there are three distinctive physical situations in which the continuum descriptions of crystal plasticity are conceptually different. They are determined by the properties of the random field of dislocation density. One of the cases corresponds to conventional plasticity theory.
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Crystal-Plasticity Fundamentals
2009Abstract This article presents the Schmid's law that describes the response of crystal structures to loading. It describes the Taylor model to calculate the uniaxial yield stress of an isotropic face-centered cubic aggregate in terms of critical resolved shear stress. The article discusses the stress-based approach of the Bishop and Hill
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