Research Article
Investigation of Piezoelectric Energy Harvesting via Nonlinear Friction-Induced Vibration
Figure 14
The displacement versus velocity phase trajectory of the friction system in tangential direction (a) and normal direction (b). The velocity versus voltage trajectory of the friction system in tangential direction (c) and normal direction (d) when μk = 1 and μs = 1.2.
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(b) |
(c) |
(d) |