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Multiaxial fatigue and failure analysis of helical compression springs

type de publication      article in an international journal with refereeing comitee
date de publication 2006
auteur(s) Del Llano-Vizcaya L.; Rubio-Gonzalez C.; Mesmacque Gerard; Cervantes-Hernandez T.
journal (abréviation) Engineering Failure Analysis (Eng Fail Anal)
volume (numéro) 13 (8)
pages 1303 – 1313
résumé Multiaxial fatigue criteria are applied to the analysis of helical compression springs. The critical plane approaches, Fatemi–Socie and Wang–Brown, and the Coffin–Manson method based on shear deformation, were used to predict fatigue lives of the springs under constant amplitude loading. Experimental fatigue lives are compared with the multiaxial fatigue criteria predictions. The stress analysis was carried out in the finite element code ANSYS, and the multiaxial fatigue study was performed using the fatigue software nCode. A failure analysis was conducted in order to determine the fatigue crack initiation point and a comparison of that location with the most damaged zone predicted by the numerical analysis is made. The Fatemi–Socie critical plane approach gives a good prediction of fatigue life. While the Wang–Brown criterion overestimates spring fatigue life, the Coffin–Mason model gives conservative results.
mots clés Spring fatigue failure; Failure analysis; Fatigue design
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