The crater radial growth rate under ballistic impact conditions

Walters, William P.; Scott, Brian R.

doi:10.1016/0045-7949(85)90112-9

Cited by 5 publications

(1 citation statement)

References 10 publications

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“…While a number of analytical models currently exist for radial hole growth in thick and thin plates, these models typically consider cylindrical projectiles with relatively large length-to-diameter ratios (see Walters and Scott, 1985;and Walters and Zukas, 1989, for exhaustive literature citations). By considering a cylindrical geometry and the symmetries associated therein, the complications associated with the impact of compact or spherical projectiles are avoided.…”

Section: Introductionmentioning

confidence: 99%

Analytical Prediction of Hole Diameter in Thin Plates Due to Hypervelocity Impact of Spherical Projectiles

Jolly

Schonberg

1997

Shock and Vibration

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A first-principles-based model is presented for calculating the hole diameter resulting from the normal hypervelocity impact of a spherical aluminum projectile on a thin aluminum plate. One-dimensional shock theory is used to predict the creation and attenuation of Hugoniot pressures along the plate surface. Pressures are translated into the plate thickness by calculating intersecting positions of advancing shock fronts and centered-fan rarefaction waves. The radial position at which the shock pressure equals a predetermined value is defined to be the hole diameter. The model was calibrated by determining this critical value for aluminum-an-aluminum impacts using several hundred data points. A residuals analysis indicated some inherent problems with the model. Two empirical factors were added to account for thin plate and two-dimensional shock dissipation effects. The predictions of the adjusted model are shown to compare well with predictions of several empirical hole diameter models.

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Section: Introductionmentioning

confidence: 99%