Abstract
The relative displacement per unit load of two conjugate points is used as a quantitative indicator of crack extension in plane strain fracture toughness KIc measurements. The necessary displacement data are presented here in dimensionless form for five types of single-edge-crack specimens: three-point bending, pure bending, remote axial tension, and eccentric tension of compact rectangular and tapered varieties. The results were obtained by a boundary collocation method of elastic analysis and are highly precise.
Résumé
On utilise le déplacement relatif par unité de change de deux points homologues comme indication quantitative de l'extension d'une fissure dans les mesures de la ténacité à la rupture KIc en état plan de déformation.
Les données sur ces déplacements sont présentées sous une forme adimensionnelle pour cinq types d'éprouvettes a fissure latérale simple: éprouvettes de flexion en trois points, de flexion pure, detraction axiale et de traction excentrique à section rectangulaire constante et variable.
Les résultats - extrêmement précis - ont été obtenus par une méthode d'analyse élastique de la correspondance des surfaces de rupture.
Zusammenfassung
Die relative Verdrängung von zwei konjugierten Punkten pro Belastungseinheit wird als quantitativer Indikator der Rissausdehnung bei planaren Bruchausdehnungsmassen KIc gebraucht. Die nötigen Verdrängungswerte sind in dieser Abhandlung in dimensionsloser Form für fünf Kategorien einzelachsiger Rissproben vertreten: Drei-punktbiegungen, reine Biegungen, fernachsige Spannung and exzentrische Belastung von kompakten, rechteckigen and zugespitzten Varietäten. Die Ergebnisse werden mittels einer Grenzkollokationsmethode erzielt and Bind sehr genau.
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Gross, B., Roberts, E. & Srawley, J.E. Elastic displacements for various edge-cracked plate specimens. Int J Fract 4, 267–276 (1968). https://doi.org/10.1007/BF00185262
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DOI: https://doi.org/10.1007/BF00185262