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Coherent behavior of balls in a vibrated box

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Academic year: 2021

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Figure

Figure 1: (a) Pustylnikov version of the Fermi acceleration, in which a ball returns to an oscillatory wall under the g 0 Earth’s gravity acceleration (see [1, 3] and references therein); (b) Ulam version, in which a ball bounces back and forth between an
Figure 3: 1 g 0 synchronized signals of the z-axis accelerometer and force sensor showing impact times (lower) and flight times (upper) for back and forth resonant behavior of a single ball at f = 121.2 Hz with A p = 0.486 mm
Figure 4: (a) Ball resonance rate (%); (b) Relative wall posi- posi-tion at the ball impact time

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