Detail publikace

The influence of the first non-singular stress terms on crack initiation direction in an orthotropic bi-material plate

KLUSÁK, J. HRSTKA, M. PROFANT, T. KREPL, O. ŠEVEČEK, O. KOTOUL, M.

Originální název

The influence of the first non-singular stress terms on crack initiation direction in an orthotropic bi-material plate

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

A bi-material plate composed of two orthotropic parts leads to free edge stress singularity. This is considered as a bi-material notch with w1=w2=90degree under general loading. Besides the singular term the first non-singular term is also included in the stress distribution at the notch tip. The Stroh–Eshelby–Lekhnitskii formalism for plane elasticity is used to express stress and displacement fields and the strain energy density factor. The exponents of the singular and non-singular stress terms and corresponding eigenvectors are the solution of the eigenvalue problem resulting from the prescribed boundary and compatibility conditions at the notch tip. The potential direction of crack initiation is determined from the local minimum of the mean value of the strain energy density factor in both materials. The necessary knowledge of the generalized stress intensity factor and generalized T-stress is realized by means of the employment of the two state conservation integrals. Following the assumption of the same mechanism of rupture in the case of a crack and a notch, an expression for the critical values of the generalized stress intensity factor is obtained.

Klíčová slova

Bi-material notch, Crack initiation direction, Non-singular stress term, Generalized fracture mechanics, Path-independent integral

Autoři

KLUSÁK, J.; HRSTKA, M.; PROFANT, T.; KREPL, O.; ŠEVEČEK, O.; KOTOUL, M.

Rok RIV

2014

Vydáno

1. 6. 2014

Nakladatel

PERGAMON-ELSEVIER SCIENCE LTD

Místo

England, Oxford

ISSN

0167-8442

Periodikum

Theoretical and Applied Fracture Mechanics

Ročník

71

Číslo

2014

Stát

Nizozemsko

Strany od

67

Strany do

75

Strany počet

9

BibTex

@article{BUT109036,
  author="Jan {Klusák} and Miroslav {Hrstka} and Tomáš {Profant} and Ondřej {Krepl} and Oldřich {Ševeček} and Michal {Kotoul}",
  title="The influence of the first non-singular stress terms on crack initiation direction in an orthotropic bi-material plate",
  journal="Theoretical and Applied Fracture Mechanics",
  year="2014",
  volume="71",
  number="2014",
  pages="67--75",
  doi="10.1016/j.tafmec.2014.05.008",
  issn="0167-8442"
}