Publication detail

An evaluation of the stress intensity factor in functionally graded materials

ŠEVČÍK, M. HUTAŘ, P. NÁHLÍK, L. KNÉSL, Z.

Original Title

An evaluation of the stress intensity factor in functionally graded materials

Type

journal article - other

Language

English

Original Abstract

Functionally graded materials (FGM) are characterised by variations in their material properties in terms of their geometry. They are often used as a coating for interfacial zones to protect the basic material against thermally or mechanically induced stresses. FGM can be also produced by technological process for, example butt-welding of polymer pipes. This work is focused on a numerical estimation of the stress intensity factor for cracks propagat-ing through FGM structure. The main difficulty of the FE model creation is the accurate description of continual changes in mechanical properties. An analysis of the FGM layer bonded from both sides with different homoge-nous materials was performed to study the influence of material property distribution. The thickness effect of the FGM layer is also discussed. All analyses are simulated as a 2D problem of an edge crack specimen. In this pa-per, the above effects are quantified and conclusions concerning the applicability of the proposed model are dis-cussed.

Keywords

functionally graded material; linear elastic fracture mechanics; discretization methodology; power-law material change

Authors

ŠEVČÍK, M.; HUTAŘ, P.; NÁHLÍK, L.; KNÉSL, Z.

RIV year

2009

Released

28. 12. 2009

Publisher

University of West Bohemia

Location

Plzeň

ISBN

1802-680X

Periodical

Applied andComputational Mechanics

Year of study

3

Number

2

State

Czech Republic

Pages from

401

Pages to

410

Pages count

10

BibTex

@article{BUT47439,
  author="Martin {Ševčík} and Pavel {Hutař} and Luboš {Náhlík} and Zdeněk {Knésl}",
  title="An evaluation of the stress intensity factor in functionally graded materials",
  journal="Applied andComputational Mechanics",
  year="2009",
  volume="3",
  number="2",
  pages="401--410",
  issn="1802-680X"
}