Analysis of Corner Cracks at Hole by a 3-D Weight Function Method with Stresses from Finite Element Method

By National Aeronautics and Space Administration

Stress intensity factors for quarter-elliptical corner cracks emanating from a circular hole are determined using a 3-D weight function method combined with a 3-D finite element method. The 3-D finite element method is used to analyze uncracked configuration and provide stress distribution in the region where crack is to occur. Using this stress distribution as input, the 3-D weight function method is used to determine stress intensity factors. Three different loading conditions, i.e. remote tension, remote bending and wedge loading, are considered for a wide range in geometrical parameters. The significance in using 3-D uncracked stress distribution and the difference between single and double corner cracks are studied. Typical crack opening displacements are also provided. Comparisons are made with solutions available in the literature. Zhao, W. and Newman, J. C., Jr. and Sutton, M. A. and Wu, X. R. and Shivakumar, K. N. Langley Research Center...

• Format: Paperback
• Language: English
• ISBN: 1730728839
• ISBN13: 9781730728839
• Release Date: January 1
• Publisher: Independently Published
• Length: 66 Pages
• Weight: 0.39 lbs.
• Dimensions: 0.1" x 8.5" x 11.0"