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001-es BibID:	BIBFORM104097
035-os BibID:	(cikkazonosító)042116 (WOS)000579816300001 (Scopus)85093109330
Első szerző:	Batool, Attia
Cím:	Impact-induced transition from damage to perforation / Attia Batool, Gergő Pál, Ferenc Kun
Dátum:	2020
ISSN:	2470-0045 2470-0053
Megjegyzések:	We investigate the impact-induced damage and fracture of a bar-shaped specimen of heterogeneous materials focusing on how the system approaches perforation as the impact energy is gradually increased. A simple model is constructed which represents the bar as two rigid blocks coupled by a breakable interface with disordered local strength. The bar is clamped at the two ends, and the fracture process is initiated by an impactor hitting the bar in the middle. Our calculations revealed that depending on the imparted energy, the system has two phases: at low impact energies the bar suffers damage but keeps its integrity, while at sufficiently high energies, complete perforation occurs. We demonstrate that the transition from damage to perforation occurs analogous to continuous phase transitions. Approaching the critical point from below, the intact fraction of the interface goes to zero, while the deformation rate of the bar diverges according to power laws as function of the distance from the critical energy. As the degree of disorder increases, farther from the transition point the critical exponents agree with their zero disorder counterparts; however, close to the critical point a crossover occurs to a higher exponent.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Physical Review E. - 102 : 4 (2020), p. 1-11. -
További szerzők:	Pál Gergő (1987-) (fizikus) Kun Ferenc (1966-) (fizikus)
Pályázati támogatás:	EFOP-3.6.1-16-2016-00022 EFOP NKFIH-K-119967 Egyéb ED18-1-2019-0028 Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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