Naslov
Prediction of Fracture Behavior of 20MnCr5 and S275JR Steel Based on Numerical Crack Driving Force Assessment

Autori
Vukelić, Goran ; Brnić, Josip

Izvornik
Journal of materials in civil engineering (0899-1561) 27 (2015), 3; 14132-14132

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

Ključne riječi
crack; fracture; crack driving force; single-edge notched bend (SENB) specimen; disc compact type (DCT)

Sažetak
Two types of steel, 20MnCr5 and S275JR, are compared in this paper based on numerical prediction of their fracture behavior. The comparison was made using the numerically determined J-integral, an important fracture mechanics parameter. For that reason, a numerical algorithm that calculates the J-integral as a measure of crack driving force was developed. As an input, the algorithm uses results from the finite element analysis conducted on numerical models of two types of specimens usually used in experimental fracture investigations, single-edge notched bend (SENB) and disc compact type (DCT). The J-integral results obtained are plotted versus specimen crack growth size (Δa) for a range of specimens’ initial crack sizes (a/W=0.25, 0.5, 0.75).

Izvorni jezik
Engleski

Znanstvena područja
Brodogradnja, Strojarstvo, Temeljne tehničke znanosti

POVEZANOST RADA