Piezoelectric resonator design and analysis from stochastic car vibration using an experimentally validated finite element with viscous-structural damping model

Within the Vibration Piezoelectric Energy Harvesting (VPEH) framework, this paper investigates and designs an optimal piezoelectric harvester (PH) under stochastic real-time vibrations using a step-by-step guideline from electrical mechanical perspective. A stochastic-excitation high-order-shear-deformation finite element (FE) method, with experimental verifications, analyzed trapezoid non-uniform resonator random base vibration. The significance of contact layer proper viscous-structural combined damping model is reported for precise power estimation. Based on modal sensitivity, fast effective model-updating method structural modulation developed. Parametric studies optimum load–frequency natural frequency-geometrical parameters relationships are investigated. Modeling results indicate that ignoring contact-layer effect will create inaccuracies in resonant frequency Besides, mandatory matched resistance loading slightly different vibration than harmonic analysis. presented applied vibration, i.e., car Electrical 1.32 mW density 495.92 µW/cm 3 produced by installing one PH undergoing excitation gravity-direction. This can be enough to low-power autonomous wireless sensor demonstrating VPEH usage sensors future intelligent cars.