A frequency-domain critical-plane criterion is reformulated in order to improve its accuracy in terms of fatigue life estimation for smooth metallic structural components under multiaxial random loading. The criterion here proposed consists of three steps: (i) definition of the critical plane; (ii) Power Spectral Density (PSD) evaluation of an equivalent normal stress; (iii) estimation of fatigue life by implementing damage models different from that used in the original formulation. Such a reformulated criterion is numerically validated by employing experimental fatigue results for 18G2A and 10 HNAP structural steels, subjected to random combined bending and torsion. Further, the above theoretical results are also compared with those determined through a time-domain criterion proposed in the past by some of the present authors.

Fatigue life evaluation of metallic structures under multiaxial random loading / Carpinteri, Andrea; Fortese, Giovanni; Ronchei, Camilla; Scorza, Daniela; Spagnoli, Andrea; Vantadori, Sabrina. - In: INTERNATIONAL JOURNAL OF FATIGUE. - ISSN 0142-1123. - 90:(2016), pp. 191-199. [10.1016/j.ijfatigue.2016.05.007]

Fatigue life evaluation of metallic structures under multiaxial random loading

CARPINTERI, Andrea;FORTESE, GIOVANNI;RONCHEI, Camilla;SCORZA, Daniela;SPAGNOLI, Andrea;VANTADORI, Sabrina
2016-01-01

Abstract

A frequency-domain critical-plane criterion is reformulated in order to improve its accuracy in terms of fatigue life estimation for smooth metallic structural components under multiaxial random loading. The criterion here proposed consists of three steps: (i) definition of the critical plane; (ii) Power Spectral Density (PSD) evaluation of an equivalent normal stress; (iii) estimation of fatigue life by implementing damage models different from that used in the original formulation. Such a reformulated criterion is numerically validated by employing experimental fatigue results for 18G2A and 10 HNAP structural steels, subjected to random combined bending and torsion. Further, the above theoretical results are also compared with those determined through a time-domain criterion proposed in the past by some of the present authors.
2016
Fatigue life evaluation of metallic structures under multiaxial random loading / Carpinteri, Andrea; Fortese, Giovanni; Ronchei, Camilla; Scorza, Daniela; Spagnoli, Andrea; Vantadori, Sabrina. - In: INTERNATIONAL JOURNAL OF FATIGUE. - ISSN 0142-1123. - 90:(2016), pp. 191-199. [10.1016/j.ijfatigue.2016.05.007]
File in questo prodotto:
File Dimensione Formato  
JIJF_3956_edit_report.pdf

Open Access dal 02/01/2018

Descrizione: Post print --- word
Tipologia: Documento in Post-print
Licenza: Creative commons
Dimensione 739.14 kB
Formato Adobe PDF
739.14 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2810544
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 47
  • ???jsp.display-item.citation.isi??? 44
social impact