Naslov
Lifetime prediction and constitutive modelling for creep-fatigue interaction

Autori
Rubeša, Domagoj

Vrsta, podvrsta i kategorija knjige
Autorske knjige, bibliografija, znanstvena

Izdavač
Gebrüder Borntraeger

Grad
Berlin : Stuttgart

Godina
1996

Stranica
157

ISBN
3-443-23015-6

Ključne riječi
lifetime prediction; creep-fatigue interaction; constitutive modelling; damage mechanics; viscoplasticity

Sažetak
The phenomena of creep, fatigue and creep-fatigue interaction in metallic materials are reviewed and studied with respect to the underlying physical processes. Different approaches and methods of lifetime prediction for the regime of creep-fatigue interaction are critically reviewed, particularly form the point of view of damage mechanics. Because of the clear need for constitutive modelling of the mechanical behaviour of a metal at high temperatures in conjunction with lifetime prediction, the principles and concepts of constitutive modelling are explained. Special emphasis is placed on one particular, as yet little used lifetime prediction rule for the creep-fatigue interaction regime, based on the principle of linear accumulation of strain rate modified time-dependent damage (the SRM rule). It is shown that the application of this rule supported by a suitable constitutive model of viscoplasticity substantially reduces the amount of experimental data required for lifetime prediction. This method of lifetime prediction in the creep-fatigue interaction regime is shown to be a practicable and reliable for most general cases of variable loading.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo, Temeljne tehničke znanosti

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