Publication detail

Influence of superimposed biaxial stress on the tensile strength of perfect crystals from first principles

ČERNÝ, M. POKLUDA, J.

Original Title

Influence of superimposed biaxial stress on the tensile strength of perfect crystals from first principles

Type

journal article in Web of Science

Language

English

Original Abstract

Influence of biaxial stresses applied perpendicularly to the [100] loading axis on the theoretical tensile strength is studied from first principles. Ten crystals of cubic metals and three crystals of diamond ceramics were selected as particular case studies. Obtained results show that, within a limited range of biaxial stresses, the tensile strength monotonously increases with increasing biaxial tensile stress for most of the studied metals. Within the range, the dependence can be approximated by a linear function. Beyond the range, the dependence shows a maximum that appears usually in tensile range of biaxial stresses. On the other hand, some of the materials (Si, Ni, Cu, and Ge) exhibit maximum tensile strength at nearly uniaxial stress state and the superposition of both tensile and compressive biaxial stresses reduces the tensile strength. Unlike the other crystals, diamond revealed the maximum under compressive biaxial stress.

Keywords

tensile strength, biaxial stress, ab initio calculations, stress coupling

Authors

ČERNÝ, M.; POKLUDA, J.

RIV year

2007

Released

30. 7. 2007

Publisher

AMER PHYSICAL SOC

Location

USA

ISBN

1098-0121

Periodical

PHYSICAL REVIEW B

Year of study

76

Number

2

State

United States of America

Pages from

024115

Pages to

24119

Pages count

5

BibTex

@article{BUT43461,
  author="Miroslav {Černý} and Jaroslav {Pokluda}",
  title="Influence of superimposed biaxial stress on the tensile strength of perfect crystals from first principles",
  journal="PHYSICAL REVIEW B",
  year="2007",
  volume="76",
  number="2",
  pages="5",
  issn="1098-0121"
}