Detail publikace

The influence of discontinuity and orthotropy of fracture toughness on conditions of fracture initiation in singular stress concentrators

KLUSÁK, J. PROFANT, T. KNÉSL, Z. KOTOUL, M.

Originální název

The influence of discontinuity and orthotropy of fracture toughness on conditions of fracture initiation in singular stress concentrators

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

This paper deals with assessment of conditions of fracture initiation in singular stress concentrations that are modeled by a bi-material notch composed of two orthotropic materials. Within the assessment of the stress concentrators, the stability criteria based on standard linear elastic fracture mechanics can lead to incorrect results due to discontinuity and orthotropy of fracture toughness. Procedures in literature suggested for assessing the critical applied loading and fracture initiation direction usually consider only the change of elastic constants of the material and do not consider the change of fracture toughness. The stability criterion considering fracture toughness dependent on the direction of presupposed fracture initiation is shown in the paper. It is concluded that the criterion of this kind can qualitatively and quantitatively influence the estimated fracture initiation conditions, and it contributes to more reliable assessment of components with geometrical and/or material discontinuity.

Klíčová slova

Composites, Generalized fracture mechanics, Fracture toughness mismatch, Bi-material notches, Stability criterion of notches

Autoři

KLUSÁK, J.; PROFANT, T.; KNÉSL, Z.; KOTOUL, M.

Rok RIV

2013

Vydáno

4. 9. 2013

Nakladatel

PERGAMON-ELSEVIER SCIENCE LTD

Místo

England, Oxford

ISSN

0013-7944

Periodikum

Engineering Fracture Mechanics

Ročník

110

Číslo

2013

Stát

Spojené království Velké Británie a Severního Irska

Strany od

438

Strany do

447

Strany počet

10

BibTex

@article{BUT106074,
  author="Jan {Klusák} and Tomáš {Profant} and Zdeněk {Knésl} and Michal {Kotoul}",
  title="The influence of discontinuity and orthotropy of fracture toughness on conditions of fracture initiation in singular stress concentrators",
  journal="Engineering Fracture Mechanics",
  year="2013",
  volume="110",
  number="2013",
  pages="438--447",
  issn="0013-7944"
}