Abstract
A finite element method for computing the angular variation of asymptotic singular solutions is presented. For the method to be applicable, the asymptotic fields must admit a separable form in polar coordinates. The radial dependence of the fields is assumed known. We provide details of the application of the method to the problem of a stationary semi-infinite crack in a Ramberg-Osgood material subjected to in-plane remote mixed mode elastic fields. This example demonstrates the primary strengths of the method: the material model is easily implemented and accurate solutions are obtained using coarse meshes.
Résumé
On présente une méthode par éléments finis pour le calcul de la variation angulaire des solutions singulières asymptotiques. Pour que la méthode soit applicable, il faut que les champs asymptotiques admettent une forme séparable en coordonnées polaires. On suppose connue la dépendance radiale du champs. Des détails sont fournis sur l'application de la méthode au problème d'une fissure semi-infinie stationnaire dans un matériau de Ramberg-Osgood soumis à des charges éloignées et dans le même plan, Cet exemple démontre les principaux points forts de la méthode: on peut aisément y introduire un modèle du matériau et obtenir des solutions précises tout en utilisant des mailles larges.
Similar content being viewed by others
References
J.W. Hutchinson, Journal of the Mechanics and Physics of Solids 16 (1968) 13–31.
J.W. Hutchinson, Journal of the Mechanics and Physics of Solids 16 (1968) 337–347.
J.R. Rice and G.F. Rosengren, Journal of the Mechanics and Physics of Solids 16 (1968) 1–12.
C.F. Shih, in Fracture Analysis, STP 560, American Society for Testing and Materials, Philadelphia (1974). 187–210.
J.C. Amazigo and J.W. Hutchinson, Journal of the Mechanics and Physics of Solids 25 (1977) 81–97.
C.Y. Hui and H. Riedel, International Journal of Fracture 17 (1981) 409–425.
C.F. Shih, “Elastic-Plastic Analysis of Combined Mode Crack Problems,” Ph.D. thesis, Harvard University, Cambridge, MA (1973). (Available through University Microfilms, Ann Arbor, MI).
J.R. Rice, Journal of Applied Mechanics 55 (1988) 98–103.
O.C. Zienkiewicz, The Finite Element Method, 3rd ed., McGraw Hill Book Company (1977).
J.R. Rice, Journal of Applied Mechanics 35 (1968) 379–386.
M. Symington, C.F. Shih and M. Ortiz, Brown University Report MRG/DMR-8714665/1, Oct. 1988.
C.F. Shih, Brown University Report MRL E-147, June 1983.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Symington, M., Ortiz, M. & Shih, C.F. A finite element method for determining the angular variation of asymptotic crack tip fields. Int J Fract 45, 51–64 (1990). https://doi.org/10.1007/BF00012609
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00012609