Pregled bibliografske jedinice broj: 511291
Experimental Investigation and Modelling of Fatigue Behaviour of Nodular Cast Iron for Wind Turbine Applications
Experimental Investigation and Modelling of Fatigue Behaviour of Nodular Cast Iron for Wind Turbine Applications // Proceedings of Eighth International Conference on Structural Dynamics EURODYN 2011
Leuven, 2011. (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
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Naslov
Experimental Investigation and Modelling of Fatigue Behaviour of Nodular Cast Iron for Wind Turbine Applications
Autori
Čanžar, Predrag ; Tonković, Zdenko ; Drvar, Nenad ; Bakić, Ante ; Kodvanj, Janoš ; Sorić, Jurica
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
Proceedings of Eighth International Conference on Structural Dynamics EURODYN 2011
/ - Leuven, 2011
Skup
Eighth International Conference on Structural Dynamics EURODYN 2011
Mjesto i datum
Leuven, Belgija, 04.07.2011. - 06.07.2011
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
Nodular cast iron; Fatigue; Experiment; Crack growth; Finite element modelling
Sažetak
The majority of modern wind turbine components, such as rotor hubs, tubular adapters, main frames and axles are made of a nodular cast iron. Its specific shape of the graphite in the ferritic microstructure acts as the crack arrester and lowers the stress intensity in front of the crack, which makes it an appropriate material for such cyclic loaded structures. This paper presents an experimental and numerical study on four different types of the nodular cast iron EN-GJS-400-18-LT. The experimental procedure includes symmetrical and unsymmetrical strain controlled tests on the cylindrical specimens as well as crack initiation and propagation tests on the compact tension specimens. Different loading regimes are applied, and monitoring of the crack length during the tests is performed by an optical system. Within the framework of numerical investigations an efficient algorithm for modelling of cyclic plasticity is proposed. The material model is based on multi-component forms of isotropic and kinematic hardening variables. Experimental results show that size and distribution of the nodules has no significant influence on material hardening but they play a great role in the crack initiation and propagation process. Moreover, wrong choice of material type could significantly reduce the component’s lifetime. This is especially evident on the results obtained under higher loading amplitudes.
Izvorni jezik
Engleski
Znanstvena područja
Strojarstvo
POVEZANOST RADA
Projekti:
120-1201910-1812 - Numeričko modeliranje procesa deformiranja bioloških tkiva (Sorić, Jurica, MZOS ) ( CroRIS)
120-1201910-1906 - Modeliranje oštećenja i sigurnost konstrukcija (Tonković, Zdenko, MZOS ) ( CroRIS)
120-1201910-1907 - Eksperimentalna simulacija oštećenja mehaničkih i biomehaničkih sustava (Kodvanj, Janoš, MZOS ) ( CroRIS)
Ustanove:
KONČAR - Institut za elektrotehniku d.d.,
Fakultet strojarstva i brodogradnje, Zagreb
Profili:
NENAD DRVAR
(autor)
Jurica Sorić
(autor)
Predrag Čanžar
(autor)
Zdenko Tonković
(autor)
Ante Bakić
(autor)
Janoš Kodvanj
(autor)