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Weight functions and stress intensity factors for the single crack round-ended straight lug

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Abstract

Investigations were performed for the round-ended straight attachment lug with a single crack emanating from the hole with the weight function method. The weight functions, covering the geometries from W/D=1.5 to W/D=4.0, were generated from the results obtained with a boundary element method using the approximate weight function technique. The results have been given both in the form of analytical weight functions and tabulated dimensionless stress intensity factors for simple normalized powers of the crack line loading. This is a simple straight forward procedure to calculate stress intensity factors once the crack line loading is approximated by a polynomial. The present method is also valid for deriving stress intensity factors and weight functions for general crack configurations.

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  1. The Aeronautical Research Institute of Sweden, P.O. Box 11021, 5-161 11, Bromma, Sweden

    G. S. Wang

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Wang, G.S. Weight functions and stress intensity factors for the single crack round-ended straight lug. Int J Fract 56, 233–255 (1992). https://doi.org/10.1007/BF00012329

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  • DOI: https://doi.org/10.1007/BF00012329

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