Detail publikace

The Analysis of the Stress and Displacement Field Near the Surface Crack Tip Terminating Perpendicular to the Interface Between Two Orthotropic Materials

PROFANT, T. ŠEVEČEK, O. KOTOUL, M.

Originální název

The Analysis of the Stress and Displacement Field Near the Surface Crack Tip Terminating Perpendicular to the Interface Between Two Orthotropic Materials

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

The evaluation of the generalized stress intensity factor (GSIF) and T-stress for the case of the surface crack terminating perpendicular to the interface between two orthotropic materials is considered. The combination of the discretization, numerical and analytic methods is used. The discretization method, such as common finite element method (FEM), is served to include the boundary condition to the GSIF solution and to describe the remote stress and displacement field region with the low influence of the singularity of the crack tip. The Lekhnickii-Eshelby-Stroh (LES) formalism is used to derive the approach solution for the near stress field of the crack tip and the singularity problem in an orthotropic 'trimaterial' using the Schwartz-Neumann's alternating technique. The problem of the stress singularity is treated as a non-linear eigenvalue problem, which leads to the characteristic equation for the stress singularities. Two ways of the evaluation of the GSIF are presented, using the reciprocal theorem and the crack model by means of continuous distribution of dislocations. Both results are compared for a specific material. The continuous distribution of dislocations technique is also used for determination of the T-stress.

Klíčová slova

orthotropic bimaterial, generalized stress intensity factor, T-stress, FEM, reciprocal theorem, distributed dislocations technique.

Autoři

PROFANT, T.; ŠEVEČEK, O.; KOTOUL, M.

Rok RIV

2007

Vydáno

1. 12. 2007

Nakladatel

Trans Tech Publications Inc.

Místo

Zurich Switzerland

ISSN

0255-5476

Periodikum

Materials Science Forum

Ročník

567

Číslo

1

Stát

Švýcarská konfederace

Strany od

137

Strany do

140

Strany počet

4

BibTex

@article{BUT44954,
  author="Tomáš {Profant} and Oldřich {Ševeček} and Michal {Kotoul}",
  title="The Analysis of the Stress and Displacement Field Near the Surface Crack Tip Terminating Perpendicular to the Interface Between Two Orthotropic Materials",
  journal="Materials Science Forum",
  year="2007",
  volume="567",
  number="1",
  pages="137--140",
  issn="0255-5476"
}