In 2009 Gao calculated the mechanical deflection and maximum voltage in resonance for a double-layer cantilever made of PZT and stainless steel (doi:10.1088/0964-1726/18/12/125018).
I did some measurements with a double-layer cantilever made of PZT and CFRP. The corresponding diagram shows the maximum voltage amplitude with constant acceleration as function of the excitation frequency. The maximum voltage amplitude ranged between 30 and 50 V for different seismic masses of 100 up to 194 g.
I took Gao's model and put all geometry and material properties inside (cf. Matlab code) and get far to small mechanical deflection and voltage amplitudes (cf. second diagram).
What could be the mistake?
Regards,
Christopher
What you need is a good theory to compute the equivalent beam properties before you can use them to compute the beam behavior such as deflection. SwiftComp can take a block of material to output the mechanical properties for a beam model. The code can be launched at https://cdmhub.org/resources/scstandard
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