MOREL, Franck; PALIN LUC, Thierry

doi:10.1046/j.1460-2695.2002.00527.x

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MOREL, Franck
École Nationale Supérieure de Mécanique et d’Aérotechnique [Poitiers] [ISAE-ENSMA]

PALIN LUC, Thierry

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Fatigue & Fracture of Engineering Materials & Structures. 2002, vol. 25, n° 7, p. 649-665

Wiley-Blackwell

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The stress gradient effect on the fatigue limit is an important factor which has to be taken into account for an efficient transfer of fatigue data from laboratory tests to design of industrial components. A short review of some multiaxial high cycle fatigue criteria considering this effect is presented. On the basis of the two local mesoscopic approaches of Papadopoulos, two new non-local high cycle multiaxial fatigue criteria are developed. These proposals are based on the concept of volume influencing fatigue crack initiation. Their predictions are compared with experimental multiaxial fatigue data on four materials (a mild steel, two high strength steels and a spheroidal graphite cast iron). The accuracy of the two local Papadopoulos criteria and of the non-local proposals are compared and discussed together with the physical interpretation of the threshold defining the volume influencing fatigue crack initiation.< Leer menos

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criterion

critical plane

gradient effect

high cycle fatigue

multiaxial

loading path

non-local criterion

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A non-local theory applied to high cycle multiaxial fatigue

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