Detail publikace

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

ČERNÝ, M. POKLUDA, J.

Anglický název

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

Typ

Článek WoS

Jazyk

en

Originální abstrakt

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.

Klíčová slova anglicky

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

Vydáno

2007-07-30

Nakladatel

AMER PHYSICAL SOC

Místo

USA

ISSN

1098-0121

Časopis

PHYSICAL REVIEW B

Ročník

76

Číslo

2

Strany od–do

024115–

Počet stran

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"
}