Infinite penetration of a projectile into a granular medium |
| |
Authors: | Pacheco-Vázquez F Caballero-Robledo G A Solano-Altamirano J M Altshuler E Batista-Leyva A J Ruiz-Suárez J C |
| |
Affiliation: | CINVESTAV-Monterrey, PIIT, Nuevo León, 66600, Mexico. fpacheco@mda.cinvestav.mx |
| |
Abstract: | An object falling in a fluid reaches a terminal velocity when the drag force and its weight are balanced. Contrastingly, an object impacting into a granular medium rapidly dissipates all its energy and comes to rest always at a shallow depth. Here we study, experimentally and theoretically, the penetration dynamics of a projectile in a very long silo filled with expanded polystyrene particles. We discovered that, above a critical mass, the projectile reaches a terminal velocity and, therefore, an endless penetration. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|