The displacement discontinuity technique in fracture mechanics: the subsurface crack problem

• Autorzy: Kourkoulis S. K. , Exadaktylos G. E.
• Konferencja: 33rd Solid Mechanics Conference, 05-09.09.2000, Zakopane, Polska
• Języki publikacji: EN

Abstrakty

EN

The displacement discontinuity technique is employed for the determination of the critical conditions causing propagation of a preexisting finite fracture that lies close to the free boundary of a semi-infinite medium. The technique is applied by using a suitably adapted commercial indirect boundary element code, permitting the determination of the displacement, strain and stress fields in multiply-connectedelastic bodies. The critical conditions are then determined by employing a suitable failure criterion. The results of the numerical analysis are compared with the respective ones obtained from a series of experiments with pre-cracked specimens simulating the semi-infinite medium. The agreement is proved to be satisfactory.

Słowa kluczowe

EN

displacement discontinuity technique; subsurface crack; fracture mechanics; boundary element method; failure criterion

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Archives of Mechanics
• Rocznik: 2001
• Tom: Vol. 53, nr 4-5
• Strony: 421--437
• Opis fizyczny: Bibliogr. 9 poz., rys., wykr.

Twórcy

autor

Kourkoulis S. K.

• National Technical University of Athens, Department of Mechanics, Zografou Campus, Theocaris Building, 157 73 Zografou, Athens, Greece

autor

Exadaktylos G. E.

• Technical University of Crete, Department of Mineral Resources Engineering, 731 00 Chania, Crete, Greece

Bibliografia

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• 6. S. L. CROUCH and A. M. STARFIELD, Boundary Element Methods in Solid Mechanics, Allen & Unwin, London 1983.
• 7. P. S. THEOCARIS, N. P. ANDRIANOPOULOS and S. K. KOURKOULIS, The angle of initiation and propagation of cracks in ductile media, Experimental Mechanics, 27, 120-125, 1987.
• 8. E. H. YOFFE, The moving Griffith crack, Philosophical Magazine, 42, pp. 739-750, 1951.
• 9. N. P. ANDRIANOPOULOS and S. K. KOURKOULIS, FLDs for modern Al and Al-Li alloys and MMCs, 10th Int. Conf. on Exp. Mech., J.F. GOMEZ [Ed.], Balkema, 995-1000, Rotterdam 1994.