SYMPOSIA PAPER Published: 01 January 1997

K3D — A Program for Determining Stress Intensity Factors of Surface and Corner Cracks from a Hole


K3D is a computer program for determining stress intensity factors of semi-elliptical surface cracks and quarter-elliptical corner cracks emanating from a hole in a wide plate. The loading conditions considered fall into two categories: (a) pre-defined loads, which include biaxial loading with arbitrary biaxial load ratio, remote tension, remote bending (corner cracks only), and wedge loading in the hole and (b) user-defined loads, which allow users to analyze any loading conditions of interest, provided that the pertinent uncracked stress distributions can be fitted to a given functional form. K3D uses an accurate and efficient PC-based weight function algorithm, which requires no pre- or post-processing. The efficiency of the algorithm makes it possible to get a solution in a few seconds on computers equipped with an 80486 microprocessor. The program is described in some detail, following a brief introduction of the theoretical background. An example is given to illustrate its use.

Author Information

Zhao, W
University of South Carolina, Columbia, SC
Sutton, MA
University of South Carolina, Columbia, SC
Newman, JC
NASA Langley Research Center, Hampton, VA
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Developed by Committee: E08
Pages: 656–670
DOI: 10.1520/STP12335S
ISBN-EB: 978-0-8031-5374-5
ISBN-13: 978-0-8031-2410-3