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001-es BibID:	BIBFORM002192
Első szerző:	Carmona, Humberto A.
Cím:	Computer simulation of fatigue under diametrical compression / H. A. Carmona, F. Kun, J. S. Andrade Jr., H. J. Herrmann
Dátum:	2007
ISSN:	2470-0045 2470-0053
Megjegyzések:	We study the fatigue fracture of disordered materials by means of computer simulations of a discrete element model. We extend a two-dimensional fracture model to capture the microscopic mechanisms relevant for fatigue, and we simulate the diametric compression of a disc shape specimen under a constant external force. The model allows to follow the development of the fracture process on the macro- and micro-level varying the relative influence of the mechanisms of damage accumulation over the load history and healing of microcracks. As a specific example we consider recent experimental results on the fatigue fracture of asphalt. Our numerical simulations show that for intermediate applied loads the life time of the specimen presents a power law behavior. Under the effect of healing, more prominent for small loads compared to the tensile strength of the material, the life time of the sample increases and a fatigue limit emerges below which no macroscopic failure occurs. The numerical results are in a good qualitative agreement with the experimental findings.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban fracture fatigue discrete element model computer simulation
Megjelenés:	Physical Review E. - 75 : 4 (2007), 046115. -
További szerzők:	Andrade, J. S. Herrmann, Hans J. Kun Ferenc (1966-) (fizikus)
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat Szerző által megadott URL DOI
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