Experimental determination of the coefficient of restitution for meter-scale granite spheres

Daniel D. Durda; Naor Movshovitz; Derek C. Richardson; Erik Asphaug; Alex Morgan; Alan R. Rawlings; Chris Vest

doi:10.1016/j.icarus.2010.09.003

Experimental determination of the coefficient of restitution for meter-scale granite spheres

Daniel D. Durda, Naor Movshovitz, Derek C. Richardson, Erik Asphaug, Alex Morgan, Alan R. Rawlings, Chris Vest

Research output: Contribution to journal › Article › peer-review

55 Scopus citations

Abstract

We present results of a series of large-scale experiments to measure the coefficient of restitution for 1-m-diameter rocky bodies in impacts with collision speeds up to ∼1.5ms^-1. The experiments were conducted in an outdoor setting, with two 40-ton cranes used to suspend the ∼1300-kg granite spheres pendulum-style in mutual contact at the bottoms of their respective paths of motion. The spheres were displaced up to ∼1m from their rest positions and allowed to impact each other in normal-incidence collisions at relative speeds up to ∼1.5ms^-1. Video data from 66 normal-incidence impacts suggest a value for the coefficient of restitution of 0.83±0.06 for collisions between ∼1-m-scale spheres at speeds of order 1ms^-1. No clear trend of coefficient of restitution with impact speed is discernable in the data.

Original language	English (US)
Pages (from-to)	849-855
Number of pages	7
Journal	Icarus
Volume	211
Issue number	1
DOIs	https://doi.org/10.1016/j.icarus.2010.09.003
State	Published - Jan 2011
Externally published	Yes

Keywords

Asteroids
Collisional physics
Experimental techniques
Planetary formation
Planetary rings

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1016/j.icarus.2010.09.003

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title = "Experimental determination of the coefficient of restitution for meter-scale granite spheres",

abstract = "We present results of a series of large-scale experiments to measure the coefficient of restitution for 1-m-diameter rocky bodies in impacts with collision speeds up to ∼1.5ms-1. The experiments were conducted in an outdoor setting, with two 40-ton cranes used to suspend the ∼1300-kg granite spheres pendulum-style in mutual contact at the bottoms of their respective paths of motion. The spheres were displaced up to ∼1m from their rest positions and allowed to impact each other in normal-incidence collisions at relative speeds up to ∼1.5ms-1. Video data from 66 normal-incidence impacts suggest a value for the coefficient of restitution of 0.83±0.06 for collisions between ∼1-m-scale spheres at speeds of order 1ms-1. No clear trend of coefficient of restitution with impact speed is discernable in the data.",

keywords = "Asteroids, Collisional physics, Experimental techniques, Planetary formation, Planetary rings",

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AU - Durda, Daniel D.

AU - Movshovitz, Naor

AU - Richardson, Derek C.

AU - Asphaug, Erik

AU - Morgan, Alex

AU - Rawlings, Alan R.

AU - Vest, Chris

PY - 2011/1

Y1 - 2011/1

N2 - We present results of a series of large-scale experiments to measure the coefficient of restitution for 1-m-diameter rocky bodies in impacts with collision speeds up to ∼1.5ms-1. The experiments were conducted in an outdoor setting, with two 40-ton cranes used to suspend the ∼1300-kg granite spheres pendulum-style in mutual contact at the bottoms of their respective paths of motion. The spheres were displaced up to ∼1m from their rest positions and allowed to impact each other in normal-incidence collisions at relative speeds up to ∼1.5ms-1. Video data from 66 normal-incidence impacts suggest a value for the coefficient of restitution of 0.83±0.06 for collisions between ∼1-m-scale spheres at speeds of order 1ms-1. No clear trend of coefficient of restitution with impact speed is discernable in the data.

AB - We present results of a series of large-scale experiments to measure the coefficient of restitution for 1-m-diameter rocky bodies in impacts with collision speeds up to ∼1.5ms-1. The experiments were conducted in an outdoor setting, with two 40-ton cranes used to suspend the ∼1300-kg granite spheres pendulum-style in mutual contact at the bottoms of their respective paths of motion. The spheres were displaced up to ∼1m from their rest positions and allowed to impact each other in normal-incidence collisions at relative speeds up to ∼1.5ms-1. Video data from 66 normal-incidence impacts suggest a value for the coefficient of restitution of 0.83±0.06 for collisions between ∼1-m-scale spheres at speeds of order 1ms-1. No clear trend of coefficient of restitution with impact speed is discernable in the data.

KW - Asteroids

KW - Collisional physics

KW - Experimental techniques

KW - Planetary formation

KW - Planetary rings

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Experimental determination of the coefficient of restitution for meter-scale granite spheres

Abstract

Keywords

ASJC Scopus subject areas

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