Research Article
A Two-Step Hybrid Approach for Modeling the Nonlinear Dynamic Response of Piezoelectric Energy Harvesters
Table 1
Material and geometrical data used in the numerical study.
| Property | Symbol | Value |
| Elastic modulus of the piezoelectric film | | 3.0 GPa | Elastic modulus of the substrate | | 3.79 GPa | Poisson ratio of the piezoelectric film | | 0.3 | Poisson ratio of the substrate | | 0.35 | Damping ratio | | 4.0% | Density of the piezoelectric film | | 1780 kg/m3 | Density of the substrate | | 1390 kg/m3 | Lumped tip mass | | 0.032 g | Piezoelectric coupling coefficient | | pC/N | Electrical permittivity | | 106 F/m | Unimorph length | | 31.7 mm | Unimorph width | | 16.0 mm | Circuit resistance | | 10 M | Thickness of the piezoelectric film | | 28 m | Homogenized stiffness | | 37.7 Nmm2 | Equivalent mylar layer thickness | | 172 m |
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