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We study grazing impact of some specific globally coupled multi-vibro-impact oscillators which is inherent Grover wave algorithm. Periodic energy transfer is caused from an internal resonance between a globally coupled small impact oscillator and a small non-impact one. Decrease of kinetic energy from the small impact oscillator by the energy transfer can cause periodic grazing impacts of the oscillator near zero velocity. We derived the condition of perfect zero-velocity graze impact from the wave algorithm. Trace of impact map in Bloch sphere shows figure-of-eight orbit, which corresponds to the shift of two different impact modes at the graze impact. In addition, we found the case of clearance vibration under low velocity. The clearance vibration is achieved by controlling external impact.

Periodic Graze Phenomena Caused by Energy Transfer between Two Globally Coupled Vibro-Impact Oscillators