Ballistic impact and penetration
Numerical investigation on anti-penetration behavior of ceramic/metal target under ballistic impact
Wadley Research Group - UVA
19 Dec Full-Text Paper (PDF): Ballistic Impact: Recent Advances in Analytical Modeling of Plate Penetration Dynamics. A Review.
Simulation of ballistic impact generally falls into one of two categories: analytical models which assume certain dominant physical phenomena and numerical simulations, where the general continuum conservation equations are integrated in time at all points in a spatial mesh to obtain the spatial time history of stresses, .
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Cavity-expansion models applied to penetration mechanics have been described and analyzed by Teland (49) and Satapathy (50). Recent studies directly associated with the application of cavity-expansion methods in modeling ballistic impact are.
Description:However, the quadratic increase in energy with thickness only holds as long as the energy to cause petalling is less than the energy for ductile deformation. The closest agreement between model and experiment is obtained when polymer interfaces are not explicitly represented in the numerical calculations, suggesting that the current model representation of such interfaces may be overly compliant. Engineering Departments Ballistic Impact Mechanisms of Materials At low impact velocities say a few hundred meters per second , the penetration resistance of a material is governed by the dynamic deformation mechanisms within the projectile and target. We can immediately see that the ratio of the rate at which the projectile is being shortened to the rate at which the target is being penetrated is given by the square root of the ratio of material densities u. All are fibers and so would be used in a composite material.