Naslov
Arbitrary crack propagation in multi-phase materials using the finite volume method

Autori
Carolan, Declan ; Tuković, Željko ; Murphy, Neal ; Ivanković, Alojz

Izvornik
Computational materials science (0927-0256) 69 (2013); 153-159

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

Ključne riječi
brittle fracture; cohesive zone model; fFinite volume method; openFOAM

Sažetak
An arbitrary crack propagation model using cell-centre finite volume based method is presented. Crack growth in an elastic solid, across an interface perpendicular to the initial crack path and into a second elastic solid is analysed. Crack initiation and the subsequent path of propagation are shown to arise naturally out of the selection of appropriate cohesive parameters. It is shown that the allowable crack propagation path is restricted by the underlying mesh. Results are presented for a number of values of interfacial strength and ratios of elastic properties between the two elastic solids. For higher values of interfacial strength, the crack is shown to propagate straight through the interface, while for lower values of interfacial strength, the crack is shown to change direction and propagate along the interface. It is shown that with careful selection of material and interface parameters it is possible to arrest a propagating crack at the interface. The method represents a useful step towards the prediction of crack propagation in complex structures.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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