Propagazione di fratture longitudinali in gasdotti caratterizzati da bassa duttilità
Journal Title: Frattura ed Integrità Strutturale - Year 2008, Vol 2, Issue 5
Abstract
Il presente lavoro propone l’analisi di propagazione di una frattura fragile longitudinale di un gasdotto interrato basata sulla valutazione dell’energy release rate. Viene illustrata l’implementazione della suddetta metodologia all’interno di un codice proprietario agli elementi finiti con formulazione esplicita, illustrando gli interventi eseguiti sul preesistente algoritmo di propagazione stazionaria, e proponendo i risultati ottenuti a seguito di simulazioni dinamiche svolte su tubi in acciaio X80 e su provini SENB in pieno spessore sottoposti a prove DWTT.
Authors and Affiliations
M. Minotti, P. Salvini
Keywords
Related Articles
- EP ID EP108309
- DOI 10.3221/IGF-ESIS.05.04
- Views 51
- Downloads 0
Weight Function Method for computations of crack face displacements and stress intensity factors of center cracks
The weight function method provides a powerful and reliable tool for the determination of the stress intensity factor around the crack tip in a linearly elastic cracked solid subjected to arbitrary loading condit...
Study of the conditions of fracture at explosive compaction of powders
Joint theoretical and experimental investigations have allowed to realize an approach with use of mathematical and physical modeling of processes of a shock wave loading of powder materials.In order to gain a bette...
The strong formulation finite element method:stability and accuracy
The Strong Formulation Finite Element Method (SFEM) is a numerical solution technique forsolving arbitrarily shaped structural systems. This method uses a hybrid scheme given by the DifferentialQuadrature Method (D...
Fracture failure analysis of baseplates in a fluidic amplifier made of WC-11Co cemented carbide
A fluidic amplifier is a crucial automatic control component in a liquid jet hammer used to drill hard formations in the oil industry. This study aims to determine the true causes of the fracture failure of basepla...
Ultrasonic fatigue testing device under biaxial bending
A new fatigue testing device has been developed to test specimens under biaxial loading at 20 kHz. A flat smooth specimen with a disc geometry is placed on a torus frame and cyclically loaded at the center of its&...