Plastic collapse analysis of longitudinally flawed pipes and vessels

  • Improved collapse loads of thick-walled, crack containing pipes and vessels are suggested. Very deep cracks have a residual strength which is better modelled by a global limit load. In all burst tests, the ductility of pressure vessel steels was sufficiently high whereby the burst pressure could be predicted by limit analysis with no need to apply fracture mechanics. The relative prognosis error increases however, for long and deep defects due to uncertainties of geometry and strength data.

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Author:Manfred Staat
Document Type:Article
Year of Completion:2004
Publishing Institution:Fachhochschule Aachen
Date of the Publication (Server):2005/11/22
Tag:Druckbeanspruchung; Druckbehälter; Druckbelastung; Fehlerstellen; Rohrbruch; Stahl
burst pressure; burst tests; flaw; load limit; pipes; vessels
GND Keyword:Druckbehälter; Stahl; Druckbelastung; Druckbeanspruchung; Rohr; Rohrbruch
Source:Nuclear Engineering and Design 234 (2004), Seite 25–43 ;
Institutes:FH Aachen / Fachbereich Medizintechnik und Technomathematik
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 60 Technik / 600 Technik, Technologie