Abstract
Finite Element Analysis with Gurson-Tvergaard-Needleman (GTN) damage model is used to analyze p-SPT specimens of two structural steels. Load-displacement curves are calculated by parametric variation of GTN parameters. An ANN is trained using load-displacement data as input and GTN parameters as output. Trained ANN is used against p-SPT experimental data to ascertain GTN parameters. Three sets of p-SPT specimens are then analyzed for different a/W ratios. Computed load-displacement curves are in good agreement with experimental results. FE model output is used to calculate (a) J-R material data (b) crack growth at peak load. These are in good agreement with literature values.
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