Naslov
FATIGUE CRACK INITIATION AND PROPAGATION MODELLING USING A CYCLIC PLASTICITY CONSTITUTIVE FORMULATION

Autori
Čanžar, Predrag ; Tonković, Zdenko ; Kodvanj, Janoš ; Bakić, Ante ; Tomičević, Zvonimir ; Surjak, Martin

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

Izvornik
Proccedings of 18th European Conference on Fracture / - Dresden, 2010

Skup
18th European Conference on Fracture

Mjesto i datum
Dresden, Njemačka, 30.08.2010. - 03.09.2010

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Low-cycle fatigue; aluminium alloy; experiment; finite element modelling; cyclic elastoplasticity; integration algorithm; crack growth

Sažetak
This paper presents an experimental and numerical study of the cyclic deformation and low-cycle fatigue behaviour of the aluminium alloy AlCu5BiPb–T8. The experimental program included monotonic tensile tests, symmetric and unsymmetric strain-controlled fatigue tests, ratcheting strain accumulation, fracture toughness tests, as well as fatigue crack propagation tests. 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 in conjunction with von Mises yield criterion. The computational algorithm is implemented into the finite element program ABAQUS and applied to the analysis of a crack growth near the notch. The accuracy of the computational procedure is tested by comparing the computed results with the real experimental data.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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