In this paper, we give a very accurate approximation of the stress intensity factors of embedded elliptical cracks in cylindrical and spherical vessels. We evaluate the stress intensity factor along the whole crack border; we do so using a polynomial weight function based on a second order approximation of the Oore-Burns integral in terms of the deviation of the contour from a disk. The stress intensity factor is given for uniform internal pressure and is related to the hoop stress. Finally, a comparison with FE stress intensity factor is given.

Stress intensity factors for embedded elliptical cracks in cylindrical and spherical vessels

LIVIERI, Paolo
Primo
;
SEGALA, Fausto
Ultimo
2016

Abstract

In this paper, we give a very accurate approximation of the stress intensity factors of embedded elliptical cracks in cylindrical and spherical vessels. We evaluate the stress intensity factor along the whole crack border; we do so using a polynomial weight function based on a second order approximation of the Oore-Burns integral in terms of the deviation of the contour from a disk. The stress intensity factor is given for uniform internal pressure and is related to the hoop stress. Finally, a comparison with FE stress intensity factor is given.
2016
Livieri, Paolo; Segala, Fausto
File in questo prodotto:
File Dimensione Formato  
1-s2.0-S0167844216300982-main.pdf

solo gestori archivio

Tipologia: Full text (versione editoriale)
Licenza: NON PUBBLICO - Accesso privato/ristretto
Dimensione 1.13 MB
Formato Adobe PDF
1.13 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
11392_2365924_PRE_Livieri.pdf

accesso aperto

Tipologia: Pre-print
Licenza: PUBBLICO - Pubblico con Copyright
Dimensione 389.99 kB
Formato Adobe PDF
389.99 kB Adobe PDF Visualizza/Apri

I documenti in SFERA 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/11392/2365924
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 21
  • ???jsp.display-item.citation.isi??? 18
social impact