Absorption of short duration pulses by small, scalable, tapered granular chains
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Publication Details
Output type: Journal article
Author list: Sokolow A, Pfannes JMM, Doney RL, Nakagawa M, Agui JH, Sen S
Publisher: American Institute of Physics
Publication year: 2005
Journal: Applied Physics Letters (0003-6951)
Volume number: 87
Issue number: 25
ISSN: 0003-6951
eISSN: 1077-3118
Languages: English-Great Britain (EN-GB)
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Open access status: closed
Abstract
Making shock proof layers is an outstanding challenge. Elastic spheres are known to repel softer than springs when gently squeezed but develop strong repulsion upon compression and the forces between adjacent spheres lead to ballistic-like energy transfer between them. Here we demonstrate that a small alignment of progressively shrinking spheres of a strong, light-mass material, placed horizontally in an appropriate casing, can absorb similar to 80% (similar to 90%) of the incident force (energy) pulse. The system can be scaled down in size. Effects of varying the size, radius shrinkage and restitutive losses are shown via computed "dynamical phase diagrams."
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