Naslov
On determination JIc parameter using a CN plate specimen

Autori
Božić, Željko

Izvornik
Transactions of FAMENA (1333-1124) 24 (2000); 47-54

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

Ključne riječi
CN plate specimen; Elastic-plastic fracture; J-integral

Sažetak
A procedure for determination of the critical J-integral parameter value, JIc, associated with the onset of stable crack propagation under Mode I deformation is presented in this paper. Fracture tests were carried out for centrally notched tension plate specimen - CN. The experiments have shown that the large scale yielding occurred in the specimen ligaments and some stable fracture proceeded to the plastic collapse. The elastic-plastic fracture mechanics concept was employed in fracture analysis. Finite element simulations, including both large deformation and elastic-plastic material behaviour were performed. J-integral and crack tip opening displacement, δt, values, were calculated using post-processing procedures. Combining numerical results of the δt values, with the corresponding experimentally obtained value associated with the crack propagation onset, the JIc value was estimated.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo, Zrakoplovstvo, raketna i svemirska tehnika

POVEZANOST RADA