Numerical simulations of low L/D rod aluminum into aluminum impacts compared to the tate cratering model
✍ Scribed by Michael R. Mchenry; Y. Choo; D.L. Orphal
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 537 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0734-743X
No coin nor oath required. For personal study only.
✦ Synopsis
Hydrocode numerical simulations have been made for 1100-O aluminum rods into thick plates of the same material with parametric variations in the penetrator length to diameter ratio ( L/D from % -10) and impact velocity (1 -6 km/s). The normalized penetration depth (P/L), primary penetration (P,/L), after-flow penetration (PJL) and crater diameter (DJD) were determined and compared with the results of the Tate penetration model and available test data. It was found that the hydrocode results agreed very well with the test data, but there was a trend for the Tate model to over-predict the after-flow penetration and crater diameter for low L/D values and high velocities. Correction factors that are a function of L/D and velocity have been found that, when applied to the Tate model penetration and diameter results, greatly improve the agreement with the test data and hydrocode calculations.