Publication detail

Influence of superimposed normal stress on shear strength of perfect bcc crystals

ČERNÝ, M. ŠESTÁK, P. POKLUDA, J.

English title

Influence of superimposed normal stress on shear strength of perfect bcc crystals

Type

WoS Article

Language

en

Original abstract

The influence of a stress applied normally to shear planes on the theoretical shear strength of bcc crystals was studied for the <111>{112} shear system in both the twinning and the anti-twinning shear mode. The applied computational procedure employed first principles code working in the framework of density functional theory. The modeled deformation of crystal lattice is represented by a uniform distortion of the primitive cell which is subjected to a superposition of shear and normal stresses. The theoretical shear strength was found to be a decreasing (increasing) function of the applied tensile (compressive) normal stress in most studied cases.

Keywords in English

ideal shear strength, homogeneous deformation, stress superposition, bcc metals, ab initio calculations

Released

2010-02-01

ISSN

0927-0256

Journal

COMPUTATIONAL MATERIALS SCIENCE

Volume

47

Number

4

Pages from–to

907–910

Pages count

4

BIBTEX


@article{BUT47809,
  author="Miroslav {Černý} and Petr {Šesták} and Jaroslav {Pokluda}",
  title="Influence of superimposed normal stress on shear strength of perfect bcc crystals",
  journal="COMPUTATIONAL MATERIALS SCIENCE",
  year="2010",
  volume="47",
  number="4",
  pages="907--910",
  issn="0927-0256"
}