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http://dx.doi.org/10.3795/KSME-A.2017.41.11.1065

Study on Material Fracture and Debris Dispersion Behavior via High Velocity Impact  

Sakong, Jae (Dept. of Automotive Engineering, Hanyang Univ.)
Woo, Sung-Choong (Survivability Technology Defense Research Center, Hanyang Univ.)
Kim, Jin-Young (Agency for Defense Development)
Kim, Tae-Won (Dept. of Mechanical Engineering, Hanyang Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.41, no.11, 2017 , pp. 1065-1075 More about this Journal
Abstract
In this study, high velocity impact tests along with modeling of material behavior and numerical analyses were conducted to predict the dispersion behavior of the debris resulting from a high velocity impact fracture. For the impact tests, two different materials were employed for both the projectile and the target plate - the first setup employed aluminum alloy while the second employed steel. The projectile impacts the target plate with a velocity of approximately 1 km/s were enforced to generate the impact damages in the aluminum witness plate through the fracture debris. It was confirmed that, depending on the material employed, the debris dispersion behavior as well as the dispersion radii on the witness plate varied. A numerical analysis was conducted for the same impact test conditions. The smoothed particle hydrodynamics (SPH)-finite element (FE) coupled technique was then applied to model the fracture and damage upon the debris. The experimental and numerical results for the diameters of the perforation holes in the target plate and the debris dispersion radii on the witness plate were in agreement within a 5％ error. In addition, the impact test using steel was found to be more threatening as proven by the larger debris dispersion radius.
Keywords
High Velocity Impact; Debris Dispersion; Smoothed Particle Hydrodynamics; Finite Element Method; Fracture;
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Times Cited By KSCI : 4  (Citation Analysis)
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