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001-es BibID:	BIBFORM069499
Első szerző:	Pál Gergő (fizikus)
Cím:	Mass-velocity correlation in impact induced fragmentation of heterogeneous solids / Gergő Pál, Ferenc Kun
Dátum:	2016
ISSN:	1434-5021 1434-7636
Megjegyzések:	We study the impact fragmentation of disorderedsolids by means of a discrete element model focusing on the velocity and mass-velocity correlation of fragments. Simula-tions are performed with plate-like objects varying the platethickness and the impact velocity in broad ranges. Dependingon the impact velocity the breakup process has two differentoutcomes: at low velocities the sample gets only damaged,to achieve fragmentation, where no large residues survive,the impact velocity has to surpass a critical value. In thefragmented phase the velocity components of fragments arepower law distributed with a stretched exponential cutoff,where the impact velocity and plate thickness mainly controlthe standard deviation of the distributions. Mass velocity cor-relation is only pointed out for thin plates, while it disappearsfor three-dimensional bulk samples. In the damage phase ofthin plates the mass and velocity of fragments proved to bestrongly correlated, however, in the fragmented phase corre-lation occurs in the vicinity of the critical velocity and it islimited to the large fragments only. The correlation functiondecays as a power law with different exponents for small andlarge fragments in good agreement with recent experimentalfindings. We show that the mass-velocity correlation origi-nates from the spatial dependence of the mass and velocityof pieces inside the fragmenting body.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban discrete element model mass-velocity correlation fragmentation dimensionality velocity distribution
Megjelenés:	Granular Matter 18 : 74 (2016), p. 1-11. -
További szerzők:	Kun Ferenc (1966-) (fizikus)
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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