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Phenomenology of the Maximum Fragment Mass Dependence Upon Ballistic Impact Parameters

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2017
lajss_2017.pdf (1.218Mb)
Authors
Mastilović, Sreten
Article (Published version)
,
Sreten Mastilović
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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.
Keywords:
Taylor test / impact fragmentation / maximum fragment mass / hypervelocity impact
Source:
Latín American Journal of Solids and Structures, 2017, 14, 8, 1529-1546
Publisher:
  • Marcilio Alves
Note:
  • Latin American Journal of Solids and Structures is an OPEN ACCESS journal and all its contents can be freely accessed at no charge.

DOI: 10.1590/1679-78253058

ISSN: 1679-7817

[ Google Scholar ]
URI
http://rimsi.imsi.bg.ac.rs/handle/123456789/1581
Collections
  • Radovi istraživača / Researchers’ publications
Institution/Community
Institut za multidisciplinarna istraživanja
TY  - 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 . .

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