Naslov
Experimental and Numerical Modeling of Heterogeneous Materials

Autori
Lesičar, Tomislav ; Tonković, Zdenko ; Sorić, Jurica ; Čanžar, Predrag

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

Izvornik
Proceedings of 17th International Foundrymen Conference / Dolid, N. ; Zovko Brodarac, Z. ; Begid Hadžipašid, A. - Sisak : InfOmArt, 2018, 44-57

ISBN
978-953-7082-31-4

Skup
17th International Foundrymen Conference: High- tech casting solution and knowledge based engineering

Mjesto i datum
Opatija, Hrvatska, 16.05.2018. - 18.05.2018

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
heterogeneous materials, second-order homogenization, C1 finite element, nonlocal continuum theory

Sažetak
Heterogeneous and composite materials are nowadays widely used for engineering applications. Nodular cast iron is used as a material of many engineering structural components due to its high strength and ductility. The realistic description of its deformation responses demands an accurate modelling at both macroscopic and microscopic scales. In this paper experimental and numerical modelling of nodular cast iron is conducted by investigating the influence of the microstructure on the overall mechanical behaviour. In the experimental measurements, comprehensive study of the nodular cast iron fatigue behaviour is performed, for various production techniques. For numerical modelling a two-scale computational approach employing the homogenization scheme based on the small strain nonlocal continuum theory is presented. Discretization of the macro- and microstructure is performed by means of the C1 continuity finite element based on the nonlocal continuum. Basic relations of the scale transition procedure, and the homogenization procedure performed at the microlevel are described. The results obtained are employed at each material point of the macroscale model predicting the structural deformation response. All algorithms derived have been embedded into the finite element program ABAQUS. The performance and accuracy of the proposed numerical method has been verified in an example, where the microstructure of a nodular cast iron is modelled by an academic representative volume element (RVE).

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA