Parametric Analysis of a Rotational Piezoelectric-Coupled Tapered-Bimorph Structure with Various Boundary Conditions Under Transient Axial Loading

The efficiency of any rotational piezoelectric vibration energy harvester (RVEH) can be improved by redesigning its host beam and making provision for self-tuning the harvester’s natural frequency with the rotational driving frequency. This article presents the design and analysis of an exponentially tapering width RVEH. The parameters for the proposed harvester’s natural frequency characteristics are acknowledged, and their effects on the peak open-circuit (OC) voltage response are discussed. A mathematical model of the system is formulated using the Euler-Bernoulli beam theory and Hamilton’s principle. Galerkin’s technique is used to acquire the system’s mass normalized mode shapes in matrix form. The proposed mathematical model is verified through ANSYS Mechanical APDL simulations and experimental methods. The harvester’s responses are obtained through MATLAB code. The two types of parameters that modify the harvester’s fundamental frequency are identified and analyzed. The proposed harvester delivered an improved power density (PD) of 5.27 [Formula: see text] and a performance amplification factor (PAF) of 3.14, operating at 7.968 Hz.

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“…where ѱ i ( x ) is the rotating exponentially tapered beam’s normalized admissible function, selected from Chand and Tyagi (2021) as;…”

Section: Mathematical Model Development and Verificationmentioning

confidence: 99%

Design and experimental validation of an exponentially tapering width rotational piezoelectric vibration energy harvester

Chand

Tyagi

2022

Journal of Intelligent Material Systems and Structures

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Parametric Study of a Revolving Piezoelectric Tapered-Bimorph Beam Subjected to Pulsating Axial Load Considering Various Boundary Conditions

Chand

Tyagi

2023

Lecture Notes in Mechanical Engineering

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Investigation of the Effects of the Piezoelectric Patch Thickness and Tapering on the Nonlinearity of a Parabolic Converging Width Vibration Energy Harvester

Chand

Tyagi

2021

J. Vib. Eng. Technol.

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Parametric Analysis of a Rotational Piezoelectric-Coupled Tapered-Bimorph Structure with Various Boundary Conditions Under Transient Axial Loading

Cited by 4 publications

References 27 publications

Design and experimental validation of an exponentially tapering width rotational piezoelectric vibration energy harvester

Design and experimental validation of an exponentially tapering width rotational piezoelectric vibration energy harvester

Parametric Study of a Revolving Piezoelectric Tapered-Bimorph Beam Subjected to Pulsating Axial Load Considering Various Boundary Conditions

Investigation of the Effects of the Piezoelectric Patch Thickness and Tapering on the Nonlinearity of a Parabolic Converging Width Vibration Energy Harvester

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