Dynamics of drag and force distributions for projectile impact in a granular medium
arXiv: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.
4 pages
References in corpus (8)
- Granular flow down an inclined plane: Bagnold scaling and rheology
- A model for collisions in granular gases
- A Model for Force Fluctuations in Bead Packs
- Low-speed impact craters in loose granular media
- Force distributions in 3D granular assemblies: Effects of packing order and inter-particle friction
- Confined granular packings: structure, stress, and forces
- Jamming and Fluctuations in Granular Drag
- Simulational studies of axial granular segregation in a rotating cylinder
Cited by in corpus (32)
- Unified force law for granular impact cratering
- Scaling and dynamics of sphere and disk impact into granular media
- Particle Scale Dynamics in Granular Impact
- Depth-dependent resistance of granular media to vertical penetration
- Granular impact and the critical packing state
- Dynamics of shallow impact cratering
- Penetration depth for shallow impact cratering
- Drag force scaling for penetration into granular media
- Collisional Model for Granular Impact Dynamics
- Projectile interactions in granular impact cratering
- Sphere penetration by impact in a granular medium: A collisional process
- Dynamics of grain ejection by sphere impact on a granular bed
- The role of interstitial gas in determining the impact response of granular beds
- Low Velocity Granular Drag in Reduced Gravity
- Length and time scales of a liquid drop impact and penetration into a granular layer
- Gas-Mediated Impact Dynamics in Fine-Grained Granular Materials
- Lift and drag in intruders moving through hydrostatic granular media at high speeds
- Granular Response to Impact: Topology of the Force Networks
- Steady Flow Dynamics during Granular Impact
- An experimental study of low-velocity impacts into granular material in reduced gravity
- The effect of finite container size on granular jet formation
- Ricochets on Asteroids: Experimental study of low velocity grazing impacts into granular media
- Power law scaling of early-stage forces during granular impact
- Still water: dead zones and collimated ejecta from the impact of granular jets
- Penetration depth scaling for impact into wet granular packings
- High-speed X-ray imaging of a ball impacting on loose sand
- Lift force on an asymmetrical obstacle immersed in a dilute granular flow
- Roles of packing fraction, microscopic friction and projectile spin in cratering by impact
- Impact craters formed by spinning granular projectiles
- Early-stage impact dynamics in dense suspensions of millimeter-sized particles
- Elastic impact of a sphere with an elastic half-space: numerical modeling and comparison with experiment
- Granular Impact: A Grain-scale Approach