Detail publikačního výsledku

Numerical investigation of stress singularities in cracked bimaterial body

NÁHLÍK, L.; ŠESTÁKOVÁ, L.; HUTAŘ, P.

Originální název

Numerical investigation of stress singularities in cracked bimaterial body

Anglický název

Numerical investigation of stress singularities in cracked bimaterial body

Druh

Článek WoS

Originální abstrakt

Composite materials or generally materials with interfaces are nowadays used in many varied engineering applications. In comparison with classical engineering materials the existence of material interface causes locally different stress distribution, which can strongly influence behaviour of whole structure and can have an important influence on failure mechanisms of such materials. The paper presented is devoted to the investigation of stress singularity exponents of a crack growing in a bimaterial body perpendicularly to the interface and touching the material interface. Discrepancies between value of stress singularity exponent in the centre of bimaterial body and on the free surface were found. The assumptions of linear elastic fracture mechanics (LEFM) and small scale yielding (SSY) are considered. For numerical calculations finite element analysis was used. Results obtained can contribute to a better understanding of failure of materials with interfaces.

Anglický abstrakt

Composite materials or generally materials with interfaces are nowadays used in many varied engineering applications. In comparison with classical engineering materials the existence of material interface causes locally different stress distribution, which can strongly influence behaviour of whole structure and can have an important influence on failure mechanisms of such materials. The paper presented is devoted to the investigation of stress singularity exponents of a crack growing in a bimaterial body perpendicularly to the interface and touching the material interface. Discrepancies between value of stress singularity exponent in the centre of bimaterial body and on the free surface were found. The assumptions of linear elastic fracture mechanics (LEFM) and small scale yielding (SSY) are considered. For numerical calculations finite element analysis was used. Results obtained can contribute to a better understanding of failure of materials with interfaces.

Klíčová slova

bimaterial interface, stress singularity exponent, corner singularity, vertex singularity, general singular stress concentrator

Klíčová slova v angličtině

bimaterial interface, stress singularity exponent, corner singularity, vertex singularity, general singular stress concentrator

Autoři

NÁHLÍK, L.; ŠESTÁKOVÁ, L.; HUTAŘ, P.

Rok RIV

2012

Vydáno

02.07.2008

Nakladatel

Trans Tech Publications

Místo

Switzerland

ISSN

1013-9826

Periodikum

Key Engineering Materials (print)

Svazek

385-387

Číslo

385-387

Stát

Švýcarská konfederace

Strany od

125

Strany do

128

Strany počet

4

BibTex

@article{BUT48865,
  author="Luboš {Náhlík} and Lucie {Malíková} and Pavel {Hutař}",
  title="Numerical investigation of stress singularities in cracked bimaterial body",
  journal="Key Engineering Materials (print)",
  year="2008",
  volume="385-387",
  number="385-387",
  pages="125--128",
  issn="1013-9826"
}