Skip to main content
Log in

The symmetrically branched crack in an infinite elastic medium

  • Original Papers
  • Published:
Zeitschrift für angewandte Mathematik und Physik ZAMP Aims and scope Submit manuscript

Summary

The plane elastostatic problem of a symmetrically branched crack in an infinite isotropic body loaded by normal stresses perpendicular to the main crack axis at infinity was studied by using the method of complex potentials. The problem was reduced to a system of three singular integral equations. By means of an approximation of the integrals through the Gauss and Lobatto numerical quadrature procedures, these singular integral equations were transformed into a system of linear equations, which can be readily solved. The stress intensity factors at the tips of the branched crack were computed directly from the solution of the above system of linear equations and were compared with the already existing experimental solutions.

Zusammenfassung

Es wird das ebene elastostatische Problem eines symmetrischen gegabelten Risses für den unendlichen, isotropen und mit senkrecht zur Riss-Hauptachse belasteten Körpers untersucht, und zwar unter Anwendung der Methode der komplexen Potentiale.

Das Problem wird auf ein Systen von drei singulären Integralgleichungen reduziert und weiter auf ein System linearer Gleichungen transformiert, vermittelst einer Näherung der Integrale mit Hilfe des leicht lösbaren numerischen Quadraturverfahrens von Gauss und Lobatto. Die Spannungsintensitätsfaktoren in den Spitzen des gegabelten Risses werden rechnerisch ermittelt und mit experimentellen Ergebnissen verglichen.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. H. Andersson,Stress-Intensity Factors at the Tips of a Star-Shaped Contour in an Infinite Tensile Sheet, J. Mech. Phys. Solids17, 405 (1969).

    Google Scholar 

  2. N. I. Muskhelishvili,Some Basic Problems of the Mathematical Theory of Elasticity (P. Noordhoff, Groningen 1953).

    Google Scholar 

  3. H. Andersson,Erratum in [1], J. Mech. Phys. Solids18, 437 (1970).

    Google Scholar 

  4. S. N. Chatterjee,The Stress Field in the Neighborhood of a Branched Crack in an Infinite Elastic Sheet, Int. J. Solids Struct.11, 521 (1975).

    Google Scholar 

  5. E. Smith,Crack Bifurcation in Brittle Solids, J. Mech. Phys. Solids16, 329 (1968).

    Google Scholar 

  6. A. P. Datsyshin andM. P. Savruk,A System of Arbitrarily Oriented Cracks in Elastic Solids, J. Appl. Math. Mech. (PMM)37, 306 (1973) [Translation of: Prikl. Mat. Mekh.37, 326 (1973)].

    Google Scholar 

  7. A. P. Datsyshin andM. P. Savruk,Integral Equations of the Plane Problem of Crack Theory, J. Appl. Math. Mech. (PMM)38, 677 (1974) [Translation of: Prikl. Mat. Mekh.38, 728 (1974)].

    Google Scholar 

  8. D. B. Hunter,Some Gauss-Type Formulae for the Evaluation of Cauchy Principal Values of Integrals, Numer. Math.19, 419 (1972).

    Google Scholar 

  9. P. S. Theocaris andC. H. Blonzou,Symmetric Branching of Cracks in PMMA (Plexiglas), Materialprüf.15, 123 (1973).

    Google Scholar 

  10. P. S. Theocaris,Reflected Shadow Method for the Study of Constrained Zones in Cracked Plates, Appl. Optics10, 2240 (1971).

    Google Scholar 

  11. A. H. England,On Stress Singularities in Linear Elasticity, Int. J. Engng Sci.9, 571 (1971).

    Google Scholar 

  12. N. S. Kambo,Error Bounds for the Lobatto and Radau Quadrature Formulas, Numer. Math.16, 383 (1971).

    Google Scholar 

  13. P. J. Davis andI. Polonsky,Numerical Interpolation, Differentiation and Integration, contained in:Handbook of Mathematical Functions (edited by:M. Abramowitz andI. A. Stegun) Dover Publ. New York p. 875–924 (1965).

    Google Scholar 

  14. G. Szegö,Orthogonal Polynomials (American Math., Soc., New York 1939).

    Google Scholar 

  15. H. Mineur,Techniques de Calcul Numérique (Libr. Polytechn. Ch. Béranger, Paris 1952).

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Theocaris, P.S., Ioakimidis, N. The symmetrically branched crack in an infinite elastic medium. Journal of Applied Mathematics and Physics (ZAMP) 27, 801–814 (1976). https://doi.org/10.1007/BF01595131

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01595131

Keywords

Navigation