The method for calculating stressÐstrain state and fracture proposed by Kolmogorov "0884# and in Part 0 of this present paper is illustrated by the simple problem of a thin bar impacting a rigid obstacle[ Known exact solutions are used to test the method[ On the basis of the stability theory\ the on
Impact of the 7.62-mm APM2 projectile against the edge of a metallic target
✍ Scribed by Sidney Chocron; Charles E. Anderson Jr.; Donald J. Grosch; Carl H. Popelar
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 387 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0734-743X
No coin nor oath required. For personal study only.
✦ Synopsis
The core of the 7.62-mm, armor-piercing APM2 projectile is very strong, but also brittle. A combined analytical, numerical and experimental investigation examined the conditions to fracture the core. The analytical model is based on a Timoshenko beam analysis, where the projectile is idealized as a semi-in"nite cylinder. A 3-D numerical model of the core, impacting against the edge of a metallic plate, was then used to investigate transient e!ects, the in#uence of constitutive model assumptions, and the in#uence of target properties on the magnitude of projectile bending strains. Results are then compared to experimental data. Numerical simulations of the full (jacketed) projectile were also investigated, and it is demonstrated that the erosion strain of the jacket is a critical parameter for successful simulations.