An analytical estimate for mass loss from a high velocity rigid penetrator

Foster, J. C.; Jones, S. E.; Toness, O.; DeAngelis, R. J.; Rule, W. K.
April 2000
AIP Conference Proceedings;2000, Vol. 505 Issue 1, p1125
Academic Journal
Analytical models of the penetration process focus on estimating depth of penetration based on target density, target strength (sometimes associated with the unconfined compressive strength of the target for geological targets), the areal density of the penetrator (W/A), and the impact velocity. In this paper, an expression for work is used in conjunction with thermodynamic considerations to devise a simple estimate for mass lost by a high velocity projectile during the penetration process. The result shows that the mass loss is directly proportional to the tunnel length and the target shear strength. The constant of proportionality is not easy to deduce, however, in that it contains an unusual factor from the work analysis. A method for estimating target shear under high pressure from penetration experiments is introduced.


Related Articles

  • Further investigation of the target resistance penetration parameter R[sub t]. Partom, Y.; Anderson, C. E.; Orphal, D. L. // AIP Conference Proceedings;2000, Vol. 505 Issue 1, p1129 

    The quasi steady-state penetration of long rods into semi-infinite targets has been described by the modified Bernoulli equation (MBE) 1/2ρ[SUBp] (V-U)[SUP2] + Y[SUBp]=1/2ρ[SUBt] U[SUP2] + R[SUBt], where R[SUBt] is a material dependent parameter corresponding to target resistance to...

  • Numerical Simulation of Vertical Penetration into Granular Beds. Waseem Ghazi AlShanti; Yong Hong Wu // Australian Journal of Basic & Applied Sciences;2011, Vol. 5 Issue 2, p182 

    In this paper, we report the numerical results of simulations that capture the dynamics of projectiles penetrating vertically into a two dimensional granular bed. The simulations are conducted by using the two dimensional discrete element method based on soft particle contact model. We study the...

  • Problem of Increasing the Survivability of Two–Stage Ballistic Guns. Khristenko, Yu. F. // Journal of Applied Mechanics & Technical Physics;Nov2000, Vol. 41 Issue 6, p1095 

    The paper proposes methods for increasing the survivability of light–gas guns, including new designs and nonconventional modes of shot. It is established theoretically and experimentally that a decrease in the cone angle of the conical adapter to 2.5 — 3° leads to a severalfold...

  • Possible detection of failure wave velocity in SiC using hypervelocity penetration experiments. Orphal, D. L.; Kozhushko, A. A.; Sinani, A. B. // AIP Conference Proceedings;2000, Vol. 505 Issue 1, p577 

    Data for projectile penetration of silicon carbide (SiC) from two types of experiments are combined. For impact velocities, v, in the range 1.5 - 4.6 km/s the data are from reverse ballistic two-stage light-gas gun experiments with long tungsten rods. For impact velocities of about 5 - 7 km/s...

  • The 'triple contrast' method in experimental wound ballistics and backspatter analysis. Schyma, Christian; Lux, Constantin; Madea, Burkhard; Courts, Cornelius // International Journal of Legal Medicine;Sep2015, Vol. 129 Issue 5, p1027 

    In practical forensic casework, backspatter recovered from shooters' hands can be an indicator of self-inflicted gunshot wounds to the head. In such cases, backspatter retrieved from inside the barrel indicates that the weapon found at the death scene was involved in causing the injury to the...

  • IMPACT STRENGTH OF GLASS AND GLASS CERAMIC. Bless, S.; Tolman, J. // AIP Conference Proceedings;12/28/2009, Vol. 1195 Issue 1, p1421 

    Strength of glass and glass ceramic was measured with a bar impact technique. High-speed movies show regions of tensile and compressive failure. The borosilicate glass had a compressive strength of at least 2.2 GPa, and the glass ceramic at least 4 GPa. However, the BSG was much stronger in...

  • Ballistic penetration of multi-layered ceramic/steel targets. Zavattieri, Pablo D.; Espinosa, Horacio D. // AIP Conference Proceedings;2000, Vol. 505 Issue 1, p1117 

    The response of multi-layered ceramic/steel targets to high velocity impact and penetration has been investigated through experiments and finite element simulations. Damage quantification and the material stresses and velocity histories provided by experiments are used as constraints to be...

  • Solution of one problem of fracture mechanics. Gavrilkina, M. V.; Glagolev, V. V.; Markin, A. A. // Journal of Applied Mechanics & Technical Physics;Jul2007, Vol. 48 Issue 4, p571 

    This paper considers a model for the opening-mode fracture separation process based on the introduction of an interaction layer. This layer is defined as the region of localization of the fracture process. The stress-strain state of the layer material is uniform in the cross section of the...

  • Crack initiation in a stiffened plate. Mir-Salim-zade, M. V. // Journal of Applied Mechanics & Technical Physics;Jul2007, Vol. 48 Issue 4, p562 

    The fracture mechanics problem of crack initiation in a stiffened plate is considered. The crack nucleus is modeled by a prefracture zone with bonds between the crack faces, which is treated as a region of weakened interparticle bonds of the material. The boundary-value problem of the...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics