Projectile Penetration

Projectile Penetration

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Sep 16, 2011 · Penetration mechanics is a difficult and multi-disciplinary field, extremely dependent on engineering, materials science, solid mechanics. Theoretically, I can try to give you the following basis for "intuition". Firstly, the heavier the projectile, the more "inertial force" it will possess.

Penetration of a projectile into a target has been the interest of countless number of researchers over the years. Backman and Goldsmith documents theories and experiments from the 19th century until 1978 and Ref. is a more recent collection of a large number of experimental data.

Penetration is nearly universally a function of sectional density, or mass divided by the frontal area, of the projectile. In most physically relevant situations, this is a strictly linear function (with one important exception, which will be discussed later). The penetration is also a function of the projectile speed.

Projectile: Full metal projectiles should be made of a material with a very high density, like uranium (19.1 g/cm 3) or lead (11.3 g/cm 3). According to Newton’s approximation, a full metal projectile made of uranium will pierce through roughly 2.5 times its own length of steel armor.

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Mechanisms of projectile penetration in Dyneema encapsulated aluminum structures M.R. O’Mastaa, V.S. Deshpandeb,*, H.N.G. Wadleya aDepartment of Material Science & Engineering, college of Engineering and Applied Science, University of Virginia, Charlottesville, VA 22904, USA b Cambridge University Engineering Department, Trumpington Street, Cambridge CB2 1PZ, UK

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Strictly speaking, penetration occurs when a projectile enters a target without passing through it and perforation occurs when the projectile completely passes through the target, but the word penetration is commonly used to refer to either.

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Results from centrifuge and 1-g model tests of projectile penetration into granular soils are described. Solid spherical projectiles in four calibers were fired into uniform samples of dry sand at

Dec 20, 2016 · SUMMARY: The primary Relative Performance Potential equation which describes penetration in human muscle or 10% Ballistic Gelatin, provides a very good representation of the Terminal Ballistics of a non-deforming cylindrical projectile.

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How can the answer be improved?

sliding friction coefficient between projectile and concrete during penetration. M and P’Oare the mass and the initial impact velocity of a projectile, d is the projectile shank diameter and N*is a “nose factor” to describe the characteristics of nose geometry, which will be discussed later.

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