Naslov
Evaluation of J Integral for Interacting Twin Collinear Through-Wall Cracks in a Plate under Tension

Autori
Katinic, Marko ; Kozak, Dražan ; Samardzic, Ivan ; Stoic, Antun ; Ivandic, Zeljko ; Tonkovic, Zlatko

Izvornik
Key Engineering Materials (1013-9826) 665 (2015); 97-100

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Multiple cracks; elastic-plastic material behavior; J integral; interaction

Sažetak
The interaction behavior of twin collinear through-wall cracks in tension loaded plate under elastic-plastic condition is investigated by the finite element method (FEM). The fracture parameter J integral for interacting cracks is calculated and compared to the J integral for a single crack the same size. In this way, the interaction factor of cracks under elastic-plastic condition is defined. This interaction factor is compared to the results of analytical solution of the interaction factor under linear elastic condition. The results show that interaction factor of cracks under elastic-plastic condition is higher than interaction factor of same cracks under linear elastic condition. Also the interaction effect of cracks under elastic-plastic condition is influenced not only by the crack configurations but also by the material properties, especially the strain hardening exponent n.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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