منابع مشابه
Variational approach in dislocation theory
A variational approach is presented to calculate the stress field generated by a system of dislocations. It is shown that in the simplest case, when the material containing the dislocations obeys Hooke’s law the variational framework gives the same field equations as Kröner’s theory. However, the variational method proposed allows to study many other problems like dislocation core regularisatio...
متن کاملThermal effects in dislocation theory.
The mechanical behaviors of polycrystalline solids are determined by the interplay between phenomena governed by two different thermodynamic temperatures: the configurational effective temperature that controls the density of dislocations, and the ordinary kinetic-vibrational temperature that controls activated depinning mechanisms and thus deformation rates. This paper contains a review of the...
متن کاملDislocation theory of chirality-controlled nanotube growth.
The periodic makeup of carbon nanotubes suggests that their formation should obey the principles established for crystals. Nevertheless, this important connection remained elusive for decades and no theoretical regularities in the rates and product type distribution have been found. Here we contend that any nanotube can be viewed as having a screw dislocation along the axis. Consequently, its g...
متن کاملOn a continuum theory of dislocation equilibrium
Victor L. Berdichevsky Mechanical Engineering, Wayne State University, Detroit MI 48202 USA; e-mail: [email protected] (Dated: March 2016) Abstract A continuum theory of dislocations is suggested which is capable of predicting the equilibrium distributions of a large number of screw dislocations in anisotropic beams with arbitrary cross-section. The theory leads to a boundary value problem wi...
متن کاملModeling of Fault Co-seismic Displacement Fields in Elastic Environments Based on Spherical Dislocation Theory
This research is based on the modeling of co-seismic deformations due to the fault movement in the elastic environments, and we can obtain the deformations generated in the faults. Here, modeling of the co-seismic displacement field is based on the analytical method with two spherical dislocation model and half-space dislocation model. The difference in displacement field from two spherical and...
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ژورنال
عنوان ژورنال: TANSO
سال: 1961
ISSN: 1884-5495,0371-5345
DOI: 10.7209/tanso.1961.29_2