Clamp / base shaker
PZT patch (strain zone)
Output LED (∝ power)
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A piezoelectric energy harvester is a small cantilever beam — clamped at one end, carrying a PZT (lead zirconate titanate) patch and often a tip mass — that flexes when its base is shaken, converting mechanical strain into electrical charge. Because the beam behaves like a mass-spring-damper system, it only bends efficiently near its own mechanical resonance frequency, which is why matching a harvester's design frequency to the vibration source (a machine, an engine, a footstep) is the central engineering problem in the field. This simulator numerically integrates the coupled electromechanical equations of motion for such a beam under sinusoidal base excitation, rendering the resulting bending in 3D while tracking tip deflection, load voltage and delivered power live, alongside the analytic steady-state frequency-response curve that explains why the resonance peak appears where it does.