dorsal/arxiv
View SchemaDynamics of drag and force distributions for projectile impact in a granular medium
| Authors | Massimo Pica Ciamarra, Antonio H. Lara, Andrew T. Lee, Daniel I. Goldman, Inna Vishik, Harry L. Swinney |
|---|---|
| Categories | |
| ArXiv ID | physics/0312054 |
| URL | https://arxiv.org/abs/physics/0312054 |
| DOI | 10.1103/PhysRevLett.92.194301 |
Abstract
Our experiments and molecular dynamics simulations on a projectile penetrating a two-dimensional granular medium reveal that the mean deceleration of the projectile is constant and proportional to the impact velocity. Thus, the time taken for a projectile to decelerate to a stop is independent of its impact velocity. The simulations show that the probability distribution function of forces on grains is time-independent during a projectile's penetration of the medium. At all times the force distribution function decreases exponentially for large forces.
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"abstract": "Our experiments and molecular dynamics simulations on a projectile\npenetrating a two-dimensional granular medium reveal that the mean deceleration\nof the projectile is constant and proportional to the impact velocity. Thus,\nthe time taken for a projectile to decelerate to a stop is independent of its\nimpact velocity. The simulations show that the probability distribution\nfunction of forces on grains is time-independent during a projectile\u0027s\npenetration of the medium. At all times the force distribution function\ndecreases exponentially for large forces.",
"arxiv_id": "physics/0312054",
"authors": [
"Massimo Pica Ciamarra",
"Antonio H. Lara",
"Andrew T. Lee",
"Daniel I. Goldman",
"Inna Vishik",
"Harry L. Swinney"
],
"categories": [
"physics.flu-dyn"
],
"doi": "10.1103/PhysRevLett.92.194301",
"title": "Dynamics of drag and force distributions for projectile impact in a granular medium",
"url": "https://arxiv.org/abs/physics/0312054"
},
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