Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
CREEP DAMAGE SIMULATION OF THICK-WALLED TUBES USING THE THETA-PROJECTION CONCEPT
Autore:
LOGHMAN A; WAHAB MA;
Indirizzi:
UNIV ADELAIDE,DEPT MECH ENGN ADELAIDE SA 5005 AUSTRALIA
Titolo Testata:
International journal of pressure vessels and piping
fascicolo: 1, volume: 67, anno: 1996,
pagine: 105 - 111
SICI:
0308-0161(1996)67:1<105:CDSOTT>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
LIFE; MODEL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
8
Recensione:
Indirizzi per estratti:
Citazione:
A. Loghman e M.A. Wahab, "CREEP DAMAGE SIMULATION OF THICK-WALLED TUBES USING THE THETA-PROJECTION CONCEPT", International journal of pressure vessels and piping, 67(1), 1996, pp. 105-111

Abstract

This paper describes a numerical model developed for the computation of creep damages in a thick-walled tube subjected to an internal pressure and a thermal gradient. The model predicts the changes in the creep damage rates during the life of the tube due to variation in stresses with time and through-thickness variations. The creep damage fraction is based on the Robinson's linear life fraction damage rule which has been incorporated in a non-linear time-dependent stress analysis. Following the stress histories the damages are calculated and summed during the life of the tube. Furthermore, from the effective stress histories a reference time has been found when the effective stress distribution becomes uniform throughout the tube wall. Effect of internal pressure on this reference time is also investigated and reported in thispaper. The material long-term creep properties up to rupture and the creep rupture data are defined by the Theta projection concept.(1-3) The accuracy of the results has been examined by comparing the Theta predicted creep curves and the numerically followed curves. Deviation ofthe followed paths from the Theta predicted paths are very small.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/11/20 alle ore 22:31:36