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Pregled bibliografske jedinice broj: 299509

Zbornik radova

Autori: Skozrit, Ivica; Tonković, Zdenko; Kozak, Dražan; Čanađija, Marko
Naslov: Influence of chosen expression for J-integral and plastic collapse loads on structural integrity assessment of surface cracked thick-walled tubes
Izvornik: Proceedings of the 7th Conference on New Trends in Fatigue and Fracture Meeting / Toth, Laslo ; Pluvinage, Guy (ur.). - Miskolctapolca :
Skup: 7th Conference on New Trends in Fatigue and Fracture Meeting
Mjesto i datum: Miskolctapolca, Mađarska, 3-4.05.2007
Ključne riječi: J-integral; plastic limit pressure; plastic collapse pressure; GE/EPRI; reference stress method
Sažetak:
The plastic limit and collapse loads as well as the stress intensity factor and J-integral of thick-walled tubes with external axial semi-elliptical surface cracks are investigated by three-dimensional non-linear finite element analyses. Unlike the existing solutions, the newly developed analytical approximation of the plastic limit pressure for thick-walled tubes is applicable to a wide range of crack dimensions. The influence of the choice of flow stress on the plastic collapse estimation of steam generator tubes is considered. Numerical results show that the flow stress, defined by some Failure Assessment Diagram methods, depends not only on the tube material, but also on the crack geometry. Further, for application of the J-integral results to general stress-strain laws, the J estimation equation is re-formulated using the modified reference stress approach.
Vrsta sudjelovanja: Predavanje
Vrsta prezentacije u zborniku: Cjeloviti rad (više od 1500 riječi)
Vrsta recenzije: Međunarodna recenzija
Projekt / tema: 120-1201910-1906, 152-1201910-1909, 069-0691736-1737, 120-1201910-1812
Izvorni jezik: ENG
Kategorija: Znanstveni
Znanstvena područja:
Strojarstvo
Upisao u CROSBI: Ivica Skozrit (ivica.skozrit@fsb.hr), 12. Lip. 2007. u 08:08 sati



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