SEDL / STP / STP1060-EB / STP23426S

Tabulated Stress-Intensity Factors for Corner Cracks at Holes Under Stress Gradients

Perez, R
Lead engineer and section chief, McDonnell Aircraft Company, St. Louis, MO

Grandt, AF
Professor and head, School of Aeronautics and Astronautics, Purdue University, West Lafayette, IN

Saff, CR
Lead engineer and section chief, McDonnell Aircraft Company, St. Louis, MO

Pages: 14    Published: Jan 1990

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Abstract

The objective of this paper is to present stress-intensity factors, K, for corner cracks at holes in a tabulated format which can be used to calculate K for general stress fields. Stress-intensity factors were obtained with the weight function method for various stress gradients and crack sizes. The paper also describes a superposition procedure to generate K for general stress distributions by using the data presented. This tabulated information is intended to expand the existing database of reference stress-intensity factors. Results were compared with other published solutions in order to evaluate the analysis procedure. In general, the difference between solutions was within 10%.