Constrained deformation of a confined solid: anomalous failure by nucleation of smectic bands

Chaudhuri, Debasish ; Sengupta, Surajit (2004) Constrained deformation of a confined solid: anomalous failure by nucleation of smectic bands Physical Review Letters, 93 (11). 115702_1-115702_4. ISSN 0031-9007

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Official URL: http://prl.aps.org/abstract/PRL/v93/i11/e115702

Related URL: http://dx.doi.org/10.1103/PhysRevLett.93.115702

Abstract

We report results of computer simulations of the deformation and failure behavior of a thin crystalline strip of "hard disks" in two dimensions confined within a quasi-one-dimensional "hard-wall" channel of fixed width corresponding to a few disk diameters. Starting from a commensurate triangular solid, stretching the strip along its length introduces a rectangular distortion. This, beyond a critical strain, leads to failure of the solid by "phase separation" into alternating bands of solid and smectic-like phases. The critical strain is inversely proportional to the channel width, i.e., thinner strips are stronger. The large plastic deformation which precedes failure is observed to be reversible.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:56542
Deposited On:24 Aug 2011 11:07
Last Modified:24 Aug 2011 11:07

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