Concrete piles are a common obstacle in an antilanding field. To research the damage ability of concrete with different shaped charges, penetration tests standoff distances (SODs) were carried out explosively formed projectiles (EFPs) and jetting projectile charges (JPCs). The pressure was measured at positions inside during process, failure mechanism characteristics analyzed. velocity JPC by p...

Protective Reinforced Concrete (RC) barrier walls of nuclear or industrial facilities are required to withstand accidental intentional missile impact. The missiles (projectiles) can be classified as hard, semi-hard soft. In particular, an airplane crash on a reinforced concrete structure causes local and global damage the structure. Local mechanisms usually associated with impact hard aircraft ...

New experiments predict that Ceres should be extensively contaminated with meteoritic debris derived from the asteroid belt. All types of impactors likely contribute to the contamination. Ceres may accrete debris more efficiently if it is ice-rich because of enhanced projectile survival and retention in porous ice targets. Experiments indicate that if a silicate regolith lag protects subsurface...

The paper gives two examples of simulating motion with spreadsheets, which are projectile motion in vacuum, and projectile motion in the air with quadratic drag.

In order to quantitatively study the penetration capability of depleted uranium alloy, a simulation model bullet impact on target plate with FEM-SPH coupling algorithm was established by using LS-DYNA software, which combined Johnson-Cook intrinsic model, fracture criterion, and equation state conduct alloy bullets made tungsten high-strength steel penetrate at 1400 m/s initial velocity. The re...

Experimental values of N/Z equilibration were calculated by the method developed by A. Keksis [1]. The isobaric yield ratios for the A=3,6,7,11,14,16 isobars were calculated from reactions of Ca beams on Sn targets. These isobar yield ratios were then plotted individually versus the N/Z of the quasi-projectile (QP) for the four systems. The (N/Z)QP was assumed to be a straight mixing between th...

New analytical formulas for the electronic stopping power and the energy loss straggling of low velocity extended charge projectiles in the degenerate electron gas are calculated within the dielectric function method. The stopping and straggling effective charges Zeff of a projectile were analysed. They are found to differ one from the other and to depend on the electron gas density rs, on the ...

The rail gun is an electromagnetic device that converts electrical energy into mechanical energy for accelerating the projectile to hypervelocity. In order to accelerate the projectile between the conducting rails, it uses the magnetic field generated by the rail current. The rail gun consists of two parallel conductors called the rails that are bridged by a non-ferromagnetic conductor called a...

Concrete elements under high-speed projectiles effect has an increasing interest recently. Understanding to what extent the concrete can resists of projectiles, very necessary in design structures order save occupants. The objective this study is develop improved numerical model for predicting dynamic response RC slabs HSP attack. present presents a total 12 casted and tested plain steel reinfo...

Traditional artillery guidance can significantly improve the attack accuracy and overall combat efficiency of projectiles, which makes it more adaptable to the information warfare of the future. Obviously, the accurate measurement of artillery spin rate, which has long been regarded as a daunting task, is the basis of precise guidance and control. Magnetoresistive (MR) sensors can be applied to...