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ČERNÝ, M. ŠESTÁK, P. POKLUDA, J.
Original Title
Influence of superimposed normal stress on shear strength of perfect bcc crystals
Type
journal article in Web of Science
Language
English
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
ideal shear strength, homogeneous deformation, stress superposition, bcc metals, ab initio calculations
Authors
ČERNÝ, M.; ŠESTÁK, P.; POKLUDA, J.
RIV year
2010
Released
1. 2. 2010
ISBN
0927-0256
Periodical
COMPUTATIONAL MATERIALS SCIENCE
Year of study
47
Number
4
State
Kingdom of the Netherlands
Pages from
907
Pages to
910
Pages count
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" }