Useful lifetime prediction software for plane semi-cracks in 3-D solid configurations
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Abstract
Computer programs are described to be used for fracture control purposes. Crack growth lifetimes can be predicted for plane cracks in 3-D structures. Values for stress intensity (K-) distributions at crack fronts are derived from data being available from literature for a restricted number of simple configurations. For arbitrary configurations the K-data are derived from inite element calculations. In that case efficient use is made of a ethod to find K-derivatives with respect to the crack extension. Procedures are included to generate input data for finite element calculations that are particularly suitable for the calculations of stress intensity facors