The paper presents a comparison of a detailed finite element modelling of elastoplastic strains at a notch root with experimental Moire interferometric data. The three-dimensional nature of the local constraint at a notch root for elastic or elastoplastic material behaviour is confirmed. The elastoplastic analysis shows that the stress concentration factor ratio from the mid-plane and the surface is practically insensitive to the actual sigma-epsilon relationship when the nominal stress achieves the yield stress.
Elasto-Plastic Strain Concentration Factors in Finite Thickness Plates
LIVIERI, Paolo;
2003
Abstract
The paper presents a comparison of a detailed finite element modelling of elastoplastic strains at a notch root with experimental Moire interferometric data. The three-dimensional nature of the local constraint at a notch root for elastic or elastoplastic material behaviour is confirmed. The elastoplastic analysis shows that the stress concentration factor ratio from the mid-plane and the surface is practically insensitive to the actual sigma-epsilon relationship when the nominal stress achieves the yield stress.File in questo prodotto:
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