Naslov
Numerically Predicted J-integral as a Measure of Crack Driving force for Steels 1.7147 and 1.4762

Autori
Vukelić, Goran ; Brnić, Josip

Izvornik
Journal of Theoretical and Applied Mechanics (1429-2955) 55 (2017), 2; 659-666

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

Ključne riječi
crack ; steel 1.7147 ; steel 1.4762 ; FE analysis

Sažetak
Fracture behavior of two types of steel (1.4762 and 1.7147) is compared based on their numerically obtained J-integral values. J-integral was chosen to quantify crack driving force using finite element (FE) stress analysis applied to single-edge notched bend (SENB) and compact tensile (CT) type fracture specimen. Resulting J-values are plotted for growing crack length (Δa – crack length extension) at different a/W ratios (a/W – relative crack length ; 0.25, 0.5, 0.75). Slightly higher resulting values of J-integral for 1.4762 than 1.7147 can be noticed. Also, higher a/W ratios correspond to lower J-integral values of materials and vice versa. J-integral values obtained by using FE model of CT specimen give somewhat conservative results when compared with ones obtained by FE model of SENB specimen.

Izvorni jezik
Engleski

Znanstvena područja
Brodogradnja, Strojarstvo, Temeljne tehničke znanosti

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