Publication detail

Evaluation of stress intensity factor in FGM

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

Original Title

Evaluation of stress intensity factor in FGM

Type

abstract

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 the polymer pipes. This work is focused on a numerical estimation of the stress intensity factor for cracks propa-gating through FGM structure. The philosophy of the FE model creation is focused on the discretization of mate-rial properties. The analysis of the FGM layer bonded from both sides with different homogenous materials has been performed to study the influence of the shape of the material property change. 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.

Released

26. 10. 2009

Publisher

Západočeská univerzita

Location

Plzeň

ISBN

978-80-7043-824-4

Book

Computational Mechanics 2009

Pages from

1

Pages to

2

Pages count

2

BibTex

@misc{BUT60827,
  author="Martin {Ševčík} and Pavel {Hutař} and Luboš {Náhlík} and Zdeněk {Knésl}",
  title="Evaluation of stress intensity factor in FGM",
  booktitle="Computational Mechanics 2009",
  year="2009",
  pages="1--2",
  publisher="Západočeská univerzita",
  address="Plzeň",
  isbn="978-80-7043-824-4",
  note="abstract"
}