The Walker-Anderson analytical penetration model, developed by Southwest Research Institute (SwRI), is based on momentum conservation along the projectile-target centerline. Originally developed for semi-infinite metallic armors, the model can be used to solve a wide range of problems including bulging and perforation, incorporating seven different exit failure modes. The analytical penetration model provides a fast-running, accurate capability to estimate penetration performance in metallic, ceramic, and fabric armors.
Analytical Penetration Modeling Applications
- Long-rod projectiles
- Small arms (armor-piercing and ball rounds)
- Fragment-simulating projectiles (FSP)
- Brittle materials (e.g., glass and ceramics)
- Ballistic fabrics
- Ballistic composites
- Estimates for ballistic protection such as V50, mass efficiency, and limit thickness
- Hypervelocity impact