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
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2365924
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