JSME International Journal Series A Solid Mechanics and Material Engineering
Online ISSN : 1347-5363
Print ISSN : 1344-7912
ISSN-L : 1344-7912
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Discrete Element Method Simulation of the Restitutive Characteristics of a Steel Spherical Projectile from a Particulate Aggregation
Masahiro NISHIDAKoichi TANAKAYukinori MATSUMOTO
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2004 Volume 47 Issue 3 Pages 438-447

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Abstract

The dynamic behavior of monodispersed particulate aggregation subjected to projectile impact at velocities less than 16m/s is investigated numerically by the discrete element method (DEM). The particulate aggregation consists of mono-size nylon spheres arranged regularly and three-dimensionally in a rectangular parallelepiped container. A steel sphere vertically strikes a nylon sphere or several nylon spheres near the center in the top layer of aggregated particles. In particular, the effects of several impact conditions on the rebound velocity of the steel projectile are discussed in detail. As a result, it is found that the rebound velocity of the steel projectile depends upon the lateral gap between nylon spheres, the ratio of the radius of the steel projectile to the radius of nylon spheres and the impact position of the steel projectile.

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© 2004 by The Japan Society of Mechanical Engineers
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