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Titolo:
FINITE-VOLUME METHOD AND MULTIGRID ACCELERATION IN MODELING OF RAPID CRACK-PROPAGATION IN FULL-SCALE PIPE TEST
Autore:
IVANKOVIC A; MUZAFERIJA S; DEMIRDZIC I;
Indirizzi:
UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED,DEPT MECH ENGN,EXHIBIT RDLONDON SW7 2BX ENGLAND UNIV HAMBURG,INST SCHIFFBAU D-22305 HAMBURG GERMANY
Titolo Testata:
Computational mechanics
fascicolo: 1-2, volume: 20, anno: 1997,
pagine: 46 - 52
SICI:
0178-7675(1997)20:1-2<46:FMAMAI>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
STRESS-ANALYSIS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
15
Recensione:
Indirizzi per estratti:
Citazione:
A. Ivankovic et al., "FINITE-VOLUME METHOD AND MULTIGRID ACCELERATION IN MODELING OF RAPID CRACK-PROPAGATION IN FULL-SCALE PIPE TEST", Computational mechanics, 20(1-2), 1997, pp. 46-52

Abstract

Rapid Crack Propagation (RCP) along pressurised plastic pipes is by far the most dangerous pipe failure mode. Despite the economic benefitsoffered by increasing pipe size and operating pressure, both strategies increase the risk and the potential consequences of RCP. It is therefore extremely important to account for RCP in establishing the safe operational conditions. Combined experimental-numerical study is the only reliable approach of addressing the problem, and extensive research is undertaken by various fracture groups (e.g. Southwest Research Institute - USA, Imperial College - UK). This paper presents numerical results from finite volume modelling of full-scale test on medium density polyethylene gas pressurised pipes. The crack speed and pressure profile are prescribed in the analysis. Both steady-state and transient RCPs are considered, and the comparison between the two shown. The steady-state results are efficiently achieved employing a full multigrid acceleration technique, where sets of progressively finer grids are used in V-cycles. Also, the effect of inelastic behaviour of polyethylene on RCP results is demonstrated.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/20 alle ore 18:16:59