| Full text | |
| Author(s): |
Carvalho, D. D.
;
Bertho, Y.
;
Franklin, E. M.
;
Seguin, A.
Total Authors: 4
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW E; v. 109, n. 5, p. 6-pg., 2024-05-13. |
| Abstract | |
We investigate experimentally the influence of rotation on the penetration depth of a spherical projectile impacting a granular medium. We show that a rotational motion significantly increases the penetration depth achieved. Moreover, we model our experimental results by modifying the frictional term of the equation describing the penetration dynamics of an object in a granular medium. In particular, we find that the frictional drag decreases linearly with the velocity ratio between rotational (spin motion) and translational (falling motion) velocities. The good agreement between our model and our experimental measurements offers perspectives for estimating the depth that spinning projectiles reach after impacting onto a granular ground, such as happens with seeds dropped from aircraft or with landing probes. (AU) | |
| FAPESP's process: | 18/14981-7 - Modeling of dense granular flows: experiments, numerical simulations and stability analyses |
| Grantee: | Erick de Moraes Franklin |
| Support Opportunities: | Research Grants - Young Investigators Grants - Phase 2 |
| FAPESP's process: | 20/04151-7 - The motion of an intruder within granular matter |
| Grantee: | Douglas Daniel de Carvalho |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 22/12511-9 - Motion and impact of solid bodies in granular media |
| Grantee: | Douglas Daniel de Carvalho |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate |