A step-by-step numerical procedure is employed to analyse the fatigue crack propagation of an initial sickle-shaped crack in a smooth round bar under cyclic tension or bending. The crack front is described by an elliptical arc during the whole fatigue life. The stress-intensity factor along the crack front is determined through a linear elastic finite element analysis for different values of crack aspect ratio and crack depth, and the fatigue crack growth is evaluated by applying the Paris-Erdogan law. The results are plotted in terms of stress-intensity factor range variations, crack paths, crack depth evolutions and crack shape evolutions. By varying the type of loading, a slight effect on the aspect ratio variation can be observed, whereas the influence on the crack depth evolution curves is remarkable.

Fatigue analysis of a round bar with a sickle-shaped crack / Carpinteri, Andrea; Brighenti, Roberto; Vantadori, Sabrina. - (2007), pp. 1-10. (Intervento presentato al convegno XVIII CONVEGNO NAZIONALE AIMETA tenutosi a BRESCIA nel 11-14 SETT. 2007).

Fatigue analysis of a round bar with a sickle-shaped crack

CARPINTERI, Andrea;BRIGHENTI, Roberto;VANTADORI, Sabrina
2007-01-01

Abstract

A step-by-step numerical procedure is employed to analyse the fatigue crack propagation of an initial sickle-shaped crack in a smooth round bar under cyclic tension or bending. The crack front is described by an elliptical arc during the whole fatigue life. The stress-intensity factor along the crack front is determined through a linear elastic finite element analysis for different values of crack aspect ratio and crack depth, and the fatigue crack growth is evaluated by applying the Paris-Erdogan law. The results are plotted in terms of stress-intensity factor range variations, crack paths, crack depth evolutions and crack shape evolutions. By varying the type of loading, a slight effect on the aspect ratio variation can be observed, whereas the influence on the crack depth evolution curves is remarkable.
2007
9788889720691
Fatigue analysis of a round bar with a sickle-shaped crack / Carpinteri, Andrea; Brighenti, Roberto; Vantadori, Sabrina. - (2007), pp. 1-10. (Intervento presentato al convegno XVIII CONVEGNO NAZIONALE AIMETA tenutosi a BRESCIA nel 11-14 SETT. 2007).
File in questo prodotto:
Non ci sono file associati a questo prodotto.

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/11381/2288328
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact