SEDL / STP / STP1074-EB / STP19010S

Assessment of Influence Function for Elliptical Cracks Subjected to Uniform Tension and to Pure Bending

Oore, M
Chief, Aeronautical Support Engineering, Halifax, Nova Scotia

Pages: 19    Published: Jan 1990

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Abstract

A root mean square (RMS) type stress intensity factor, , which is defined and used in [1] and [2] for crack growth and fracture calculations, is investigated in this study. Whereas the common studies use approximate numerical integration of the influence function to analyze various configurations, in the present study the definition is used analytically to derive accurate values for various ellipticaljiracks subjected to uniform tensile stress and also to pure bending. The significance of these results are explored via comparison with the exact classical maximum and minimum stress intensity factors along the front of the corresponding elliptical cracks.