Detail publikace

Calculation of k-factor and t-stress for cracks in anisotropic bimaterials

PROFANT, T. ŠEVEČEK, O. KOTOUL, M.

Originální název

Calculation of k-factor and t-stress for cracks in anisotropic bimaterials

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

The problem of a crack in a thin layer terminating perpendicular to a layer/substrate interface is analyzed for a general case of elastic anisotropy. The crack is modelled by means of continuous distribution of dislocations, which is assumed to be singular at the crack tip. A system of simultaneous functional equations is obtained that enables to find the singularity exponent . The reciprocal theorem is used to compute the generalized stress intensity factor (GSIF) through the remote stress and displacement field for a particular specimen geometry and boundary conditions using FEM. The results obtained are compared with the evaluation of GSIF based upon the dislocation arrays technique. Existing semi-analytical solution for singularities in anisotropic trimaterials is applied and its validity for the specimen investigated is checked by FEM. The evaluation of T-stress using the dislocation arrays technique is performed.

Klíčová slova

anisotropic bimaterials; generalized stress intensity factor; T-stress; FEM; reciprocal theorem; distributed dislocations technique.

Autoři

PROFANT, T.; ŠEVEČEK, O.; KOTOUL, M.

Rok RIV

2007

Vydáno

11. 10. 2007

ISSN

0013-7944

Periodikum

Engineering Fracture Mechanics

Ročník

75

Číslo

11

Stát

Spojené království Velké Británie a Severního Irska

Strany od

3707

Strany do

3726

Strany počet

20

BibTex

@article{BUT44276,
  author="Tomáš {Profant} and Oldřich {Ševeček} and Michal {Kotoul}",
  title="Calculation of k-factor and t-stress for cracks in anisotropic bimaterials",
  journal="Engineering Fracture Mechanics",
  year="2007",
  volume="75",
  number="11",
  pages="3707--3726",
  issn="0013-7944"
}