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Low cycle fatigue and elasto-plastic material behaviour simulation


Franulović, Marina; Basan, Robert; Križan, Božidar
Low cycle fatigue and elasto-plastic material behaviour simulation // Proceedings of the 7th International scientific conference Research and development of mechanical elements and systems / Miltenović, Vojislav (ur.).
Niš, 2011. str. 89-94 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)


Naslov
Low cycle fatigue and elasto-plastic material behaviour simulation

Autori
Franulović, Marina ; Basan, Robert ; Križan, Božidar

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 7th International scientific conference Research and development of mechanical elements and systems / Miltenović, Vojislav - Niš, 2011, 89-94

ISBN
978-86-6055-012-7

Skup
Research and development of mechanical elements and systems

Mjesto i datum
Zlatibor, Srbija, 27-28.04.2011.

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Fatigue; material model; genetic algorithm; simulation

Sažetak
Modelling of material behaviour has significant influence on design and optimization of mechanical structures and consequently calculation of their lifetime. There are numerous material models in use today. They vary in their complexity and offer knowledge of various material behaviour characteristics. Material model presented in this paper describes elasto-plastic behaviour of the material. It takes into account damage occurrence and accumulation in the material and its relation to isotropic and kinematic hardening. The material constitutive model is highly non-linear and therefore its parameter identification requires complex numerical procedure, such as genetic algorithm. Because of its complexity, the unique genetic operators’ routines in genetic algorithm calculation procedure are developed to make possible fast and reliable convergence to the results. These routines, chosen to build an optimal genetic algorithm procedure, are proposed in this paper. Genetic algorithm proved to be a good method for material parameters identification. The procedure is validated by comparing simulated material response in different loading conditions with a real one. The experiments for this comparison are performed on testing specimens made out of steel 42CrMo4, loaded to make possible low cycle fatigue and elasto-plastic material behaviour analysis.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo



POVEZANOST RADA


Projekt / tema
069-0692195-1796 - Materijali, trajnost i nosivost suvremenih zupčastih prijenosnika (Božidar Križan, )

Ustanove
Tehnički fakultet, Rijeka