Phenomenology of the Maximum Fragment Mass Dependence Upon Ballistic Impact Parameters
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Molecular dynamics simulations of the ballistic Taylor test are used to explore correlation between the largest fragment mass and the impact energy of a projectile as well as a set of selected state variables. Flat-ended, monocrystalline, nanoscale bars collide with a rigid wall with striking velocities ranging from 0.27 km/s to 60 km/s. The investigation emphasis is on two border regions of the emerging nonlinear phenomenological model identified with two transitions: the damage-fragmentation transition and the shattering transition. In between these two nonlinear regions, the maximum fragment mass is largely inversely proportional to the impact energy, and the maximum values of the pressure, temperature, and the square of the efective strain. A reverse-sigmoid phenomenological model is proposed to capture the unifying features of this nonlinear and saturable dependence. A crystallographic orientation dependence of the damage-fragmentation transition parameters is investigated.
Кључне речи:
Taylor test / impact fragmentation / maximum fragment mass / hypervelocity impactИзвор:
Latín American Journal of Solids and Structures, 2017, 14, 8, 1529-1546Издавач:
- Marcilio Alves
Напомена:
- Latin American Journal of Solids and Structures is an OPEN ACCESS journal and all its contents can be freely accessed at no charge.
Институција/група
Institut za multidisciplinarna istraživanjaTY - JOUR AU - Mastilović, Sreten PY - 2017 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/1581 AB - Molecular dynamics simulations of the ballistic Taylor test are used to explore correlation between the largest fragment mass and the impact energy of a projectile as well as a set of selected state variables. Flat-ended, monocrystalline, nanoscale bars collide with a rigid wall with striking velocities ranging from 0.27 km/s to 60 km/s. The investigation emphasis is on two border regions of the emerging nonlinear phenomenological model identified with two transitions: the damage-fragmentation transition and the shattering transition. In between these two nonlinear regions, the maximum fragment mass is largely inversely proportional to the impact energy, and the maximum values of the pressure, temperature, and the square of the efective strain. A reverse-sigmoid phenomenological model is proposed to capture the unifying features of this nonlinear and saturable dependence. A crystallographic orientation dependence of the damage-fragmentation transition parameters is investigated. PB - Marcilio Alves T2 - Latín American Journal of Solids and Structures T1 - Phenomenology of the Maximum Fragment Mass Dependence Upon Ballistic Impact Parameters EP - 1546 IS - 8 SP - 1529 VL - 14 DO - 10.1590/1679-78253058 ER -
@article{ author = "Mastilović, Sreten", year = "2017", abstract = "Molecular dynamics simulations of the ballistic Taylor test are used to explore correlation between the largest fragment mass and the impact energy of a projectile as well as a set of selected state variables. Flat-ended, monocrystalline, nanoscale bars collide with a rigid wall with striking velocities ranging from 0.27 km/s to 60 km/s. The investigation emphasis is on two border regions of the emerging nonlinear phenomenological model identified with two transitions: the damage-fragmentation transition and the shattering transition. In between these two nonlinear regions, the maximum fragment mass is largely inversely proportional to the impact energy, and the maximum values of the pressure, temperature, and the square of the efective strain. A reverse-sigmoid phenomenological model is proposed to capture the unifying features of this nonlinear and saturable dependence. A crystallographic orientation dependence of the damage-fragmentation transition parameters is investigated.", publisher = "Marcilio Alves", journal = "Latín American Journal of Solids and Structures", title = "Phenomenology of the Maximum Fragment Mass Dependence Upon Ballistic Impact Parameters", pages = "1546-1529", number = "8", volume = "14", doi = "10.1590/1679-78253058" }
Mastilović, S.. (2017). Phenomenology of the Maximum Fragment Mass Dependence Upon Ballistic Impact Parameters. in Latín American Journal of Solids and Structures Marcilio Alves., 14(8), 1529-1546. https://doi.org/10.1590/1679-78253058
Mastilović S. Phenomenology of the Maximum Fragment Mass Dependence Upon Ballistic Impact Parameters. in Latín American Journal of Solids and Structures. 2017;14(8):1529-1546. doi:10.1590/1679-78253058 .
Mastilović, Sreten, "Phenomenology of the Maximum Fragment Mass Dependence Upon Ballistic Impact Parameters" in Latín American Journal of Solids and Structures, 14, no. 8 (2017):1529-1546, https://doi.org/10.1590/1679-78253058 . .