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Fracture mechanisms under monotonic and non-monotonic low Lode angle loading

Abstract : Ductility of high-strength low-alloy steel S420MC was investigated by means of experiments and finite element analyses. Monotonic and non-monotonic low Lode angle experiments were carried out using double curvature specimens and punching tests. Punching tests allow investigating material behavior under zero Lode angle and from low to high stress triaxiality ratios. Investigated material exhibits significant increase of ductility with stress triaxiality decrease. Under low enough stress triaxiality, loss of load carrying capacity and fracture were not observed. Even if fracture is not observed under these conditions, pre-strains under very low stress triaxiality induce relative loss of ductility when the material is loaded again at higher stress triaxiality.
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https://hal-mines-paristech.archives-ouvertes.fr/hal-01023769
Contributeur : Magalie Prudon <>
Soumis le : mardi 15 juillet 2014 - 11:20:22
Dernière modification le : jeudi 24 septembre 2020 - 17:22:55

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Jean-Marie Gachet, Guillaume Delattre, Pierre-Olivier Bouchard. Fracture mechanisms under monotonic and non-monotonic low Lode angle loading. Engineering Fracture Mechanics, Elsevier, 2014, 124-125, pp.121-141. ⟨10.1016/j.engfracmech.2014.04.009⟩. ⟨hal-01023769⟩

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