Publication result detail

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

ČERNÝ, M.; ŠESTÁK, P.; POKLUDA, J.

Original Title

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

English Title

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

Type

WoS Article

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.

English 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

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

Key words in English

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

Authors

ČERNÝ, M.; ŠESTÁK, P.; POKLUDA, J.

RIV year

2010

Released

01.02.2010

ISBN

0927-0256

Periodical

COMPUTATIONAL MATERIALS SCIENCE

Volume

47

Number

4

State

Kingdom of the Netherlands

Pages from

907

Pages to

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"
}