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Proceedings Paper

Observations on the impact of a spherical projectile on particulate aggregations
Author(s): Masahiro Nishida; Koichi Tanaka; Yukinori Matsumoto
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Paper Abstract

The dynamic behavior of particulate aggregation subjected to the impact of a steel spherical projectile was simultaneously recorded using two high-speed video cameras at different angles and analyzed numerically using a discrete element method. The effects of the impact velocity (1-25 m/s), impact angle (0-65 degrees), and size of the steel projectile on the dynamic response of particulate aggregation and projectile were examined. The movement of the projectile after impact can be classified into four types: penetration into particulate aggregation; stopping at the particulate aggregation surface; rebounding from particulate aggregation; and horizontal movement along the particulate aggregation surface. The type of movement depended on impact velocity and impact angle. The defining boundaries between the four types of movements became clearer as the size of the projectile increased. The results of numerical simulation also indicated that the magnitude, direction, and bifurcation of contact forces propagating into particulate aggregation play an important role in the change of the projectile's movement after impact.

Paper Details

Date Published: 17 March 2005
PDF: 8 pages
Proc. SPIE 5580, 26th International Congress on High-Speed Photography and Photonics, (17 March 2005); doi: 10.1117/12.567218
Show Author Affiliations
Masahiro Nishida, Nagoya Institute of Technology (Japan)
Koichi Tanaka, Nagoya Institute of Technology (Japan)
Yukinori Matsumoto, Nagoya Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 5580:
26th International Congress on High-Speed Photography and Photonics
Dennis L. Paisley; Stuart Kleinfelder; Donald R. Snyder; Brian J. Thompson, Editor(s)

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