A frequency-domain critical plane criterion is here proposed to estimate fatigue life of smooth metallic structural components under multiaxial random loading. The procedure consists of the following three steps: (a) definition of the critical plane; (b) PSD evaluation of an equivalent normal stress; (c) computation of the fatigue life. A new formulation to define the critical plane is adopted in order to improve the criterion as far as the lifetime estimation is concerned. The criterion is numerically validated through comparison of the obtained results with experimental fatigue data, available in the literature, for structural steel subjected to non-proportional bending and torsion.
A frequency-domain HCF criterion for biaxial random loading / Vantadori, Sabrina; Carpinteri, Andrea; Ronchei, Camilla; Scorza, Daniela. - ELETTRONICO. - (2015), pp. 1-8. (Intervento presentato al convegno 4th International Conference of Engineering Against Failure tenutosi a Skiathos island, Greece nel 24-26 giugno 2015).
A frequency-domain HCF criterion for biaxial random loading
VANTADORI, Sabrina;CARPINTERI, Andrea;RONCHEI, Camilla;SCORZA, Daniela
2015-01-01
Abstract
A frequency-domain critical plane criterion is here proposed to estimate fatigue life of smooth metallic structural components under multiaxial random loading. The procedure consists of the following three steps: (a) definition of the critical plane; (b) PSD evaluation of an equivalent normal stress; (c) computation of the fatigue life. A new formulation to define the critical plane is adopted in order to improve the criterion as far as the lifetime estimation is concerned. The criterion is numerically validated through comparison of the obtained results with experimental fatigue data, available in the literature, for structural steel subjected to non-proportional bending and torsion.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
